2018 COMPLIANCE REPORT · 2019-03-21 · 2018 Compliance Report LHPWSS Page 2 TABLE OF CONTENTS...

CONTACT INFO:

Owner: Lake Huron Primary Water Supply System Board of Management

c/o City of London, Regional Water Supply Division 235 North Centre Road, Suite 200, London, ON N5X 4E7

519-930-3505

Operating Authority: Ontario Clean Water Agency

P.O. Box 1409, Grand Bend, ON N0M 1T0 519-238-8466

2018 COMPLIANCE REPORT

2018 Compliance Report LHPWSS Page 2

TABLE OF CONTENTS PROFILE .............................................................................................................. 3

WHO WE ARE .................................................................................................. 3 WHAT WE DO ................................................................................................... 4 WHAT IS IMPORTANT ..................................................................................... 5 LHPWSS: AT A GLANCE ................................................................................ 6 THE WATER TREATMENT PROCESS ............................................................ 7

2018 HIGHLIGHTS ............................................................................................... 8 WORLD WATER DAY ....................................................................................... 8

2018 CAPITAL PROJECT HIGHLIGHTS ............................................................. 9 POWDER ACTIVATED CARBON (PAC) SYSTEM GENERATOR REPLACEMENT ............................................................................................... 9 GUARDRAILING UPGRADE .......................................................................... 10 TRAVELLING SCREEN REPLACEMENT ...................................................... 10 FILTER MEDIA REPLACEMENTS ................................................................. 11 DISTRESSED PIPE #11-4 REPLACEMENT .................................................. 12

2018 FLOW SUMMARY ..................................................................................... 13 2018 CHEMICAL CONSUMPTION ..................................................................... 14 2018 WATER QUALITY SAMPLING AND MONITORING ................................. 15 RESEARCH & PARTNERSHIPS ........................................................................ 16

ALGAL TOXINS MONITORING PROGRAM ................................................... 16 PILOT STUDY – LEAD RESEARCH ............................................................... 16

MINISTRY INSPECTION .................................................................................... 18 APPENDIX A: 2018 Flow Summary APPENDIX B: 2018 Annual Report


LHPWSS Board Member Municipalities

City of London (Administering Municipality) Municipality of Bluewater

Municipality of Lambton Shores Township of Lucan Biddulph

Municipality of Middlesex Centre Municipality of North Middlesex

Municipality of South Huron Municipality of Strathroy-Caradoc

PROFILE WHO WE ARE The Lake Huron Primary Water Supply System (LHPWSS) is owned by a Board of Management who governs the drinking water system. The Board of Management is made up of members appointed from each of the eight (8) member municipalities that are currently supplied with water from the LHPWSS. One of these member municipalities, the City of London, acts as the Administering Municipality. Accordingly, the City of London provides all associated administrative and management services on behalf of the Board. The Board of Management currently utilizes the services of an independent contracted Operating Authority. The water system is operated and maintained by Ontario Clean Water Agency (OCWA) under contract to the Board of Management.

OPERATING AUTHORITY:


LHPWSS: Assets

1 water treatment plant 1 residuals management facility

3 water pumping stations 3 in-ground storage reservoirs

8 monitoring stations 151 km of watermain

WHAT WE DO Water Treatment & Supply The LHPWSS is responsible for the treatment and transmission of drinking water to eight (8) municipalities in southwestern Ontario. The population served by this system is approximately 375,000. Water is provided bulk wholesale to the municipalities who then distribute it to their customers. The Lake Huron Water Treatment Plant (WTP) has been in operation since 1967. The WTP employs pre-chlorination, screening, powder activated carbon addition (seasonally on an as-required basis), coagulation, flocculation, sedimentation, dual-media filtration, post-chlorination, and sodium hydroxide addition to treat raw water obtained from Lake Huron. After the water is treated it is pumped from the WTP to various communities or to storage reservoirs. The drinking water system is monitored at various locations throughout the system via a Supervisory Control and Data Acquisition (SCADA) system.

Figure 1: McGillivray Booster Pumping Station

Figure 2: Pumps at the Lake Huron WTP


WHAT IS IMPORTANT Values of the Water System The values of the LHPWSS are the inherent beliefs or moral standards that generally reflect what the LHPWSS Board of Management stands for and believes in:

• Sustainable - be financially, environmentally, socially, and physically sustainable;

• Inclusive - provide access to bulk drinking water for current and prospective members, in accordance with Board policy;

• Fair and equitable - balance the interests of individual members with the best interests of all members, as well as the needs of existing members with the needs of new members;

• Vigilant - ensure an adequate supply of safe and reasonably priced drinking water is available to members;

• Innovative - be receptive to and supportive of new ideas and opportunities for improvement;

• Cooperative – be supportive to the needs of the Lake Huron Primary Water Supply System;

• Open and transparent – conduct business in a manner that enables member municipalities and the public to review and provide input into major decisions as appropriate;

• Public Ownership – retain ownership of the water system in public hands.


LHPWSS: AT A GLANCE

Figure 3: LHPWSS Major Infrastructure Locations

LHPWSS Pipeline Storage Reservoir Pumping Station

* Not to Scale


Fluoridation does not take place at the Lake Huron Water Treatment Facility.

THE WATER TREATMENT PROCESS The following figure provides a general overview of the conventional water treatment process. The processes outlined below are very similar to the treatment at the Lake Huron WTP, although they are not an exact representation. Some details may vary. Step 9 (fluoridation) does not take place at the Lake Huron WTP. Figure 4: Overview of the Water Treatment Process At the Lake Huron WTP, one additional treatment step takes place:

• Sodium Hydroxide is added as the treated water leaves the WTP and enters the transmission system (Step 11) to raise the treated water pH, resulting in reduced corrosion potential.


2018 HIGHLIGHTS

WORLD WATER DAY World Water Day is celebrated annually on March 22nd to draw attention to water issues worldwide. On March 22, 2018, staff raised a glass to thank all those who work hard to provide their communities with access to safe drinking water.

In 2018, Ontario Clean Water Agency (OCWA) proudly celebrated their 25th anniversary. OCWA employees believe in the important role they play in the stewardship and protection of water resources and the sustainability of the communities in which they live and work.

Figure 5: OCWA staff raise a glass on World Water Day (March 22, 2018).


2018 CAPITAL PROJECT HIGHLIGHTS

POWDER ACTIVATED CARBON (PAC) SYSTEM GENERATOR REPLACEMENT A generator is required for the PAC system, solely for the purpose of providing emergency backup power. The previously existing 125kW trailer-mounted portable generator was in need of major modifications due to new Technical Standards and Safety Authority (TSSA) regulations. As such, a new stationary 125kW generator set was installed as part of the electrical systems upgrade project. The new generator was put into service in May 2018.

Figure 6: The new 125kW generator set, installed outside the Carbon Building.


GUARDRAILING UPGRADE All guardrails in and around the North and South flocculation tanks were replaced in 2018. The work was required to meet regulatory requirements as it applies to guardrails in the Occupational Health and Safety Act (OHSA) and Building Code. The previous guardrails were too low, did not have mid-rails or toe boards. The guardrails have since been replaced and now meet applicable requirements.

TRAVELLING SCREEN REPLACEMENT The travelling screens located at the low lift pump station prevent debris, fish and other large suspended materials from entering the pump station. Two of the three travelling screens were from the original plant construction 50 years ago, were reaching the end of serviceable lifespan and required replacement. Travelling screen #2 was replaced in 2017 and travelling screen #1 was replaced in 2018, as the second phase of the multi-year replacement program.

Figure 7: New guardrails around the North and South flocculation tanks

Figure 8: New travelling screen #1 in the low lift pump station


FILTER MEDIA REPLACEMENTS The twelve (12) dual-media filters at the Lake Huron WTP were from the original construction in the mid-1960s. All filters were showing signs of deterioration due to age. This project undertakes the systemic replacement of the media within the filter boxes, as well as the filter rate valves and control valves, with an allowance for any repairs to the existing filter block and drains as needed. The filter media replacement project is a multi-year project. The filter media is being replaced in several filters per year, with 2018 being the fourth year of the replacement program. In 2018, filters #2, #6, #7 and #9 were replaced.

Figure 9: Filter #6 taken out of service for rebuild. Removal of the filter media is in progress.


DISTRESSED PIPE #11-4 REPLACEMENT As part of the Acoustic Fiber Optic (AFO) monitoring system installed within the 1200mm transmission pipeline, the LHPWSS determined in June 2017 that a pipe in an un-twinned high pressure section of the LHPWSS transmission main was in poor condition and consequently at high risk of failure. The LHPWSS initiated the proactive replacement of Pipe #11-4, which is located immediately south of Mt. Carmel Road and west of Lieury Road.

On January 30, 2018, the LHPWSS coordinated the full replacement of this section of pipe. The repair took nearly 20 hours to complete. Had the LHPWSS failed to replace this distressed pipe section, it could have resulted in a catastrophic failure of the pipeline causing extensive damage to agricultural lands in the area.

Figure 10a: Worksite south of Mount Carmel Drive

Figure 10b: Removal of pipe #11-4

Figure 10c: Installation of first repair piece Figure 10d: Installation of Dresser coupling


2018 FLOW SUMMARY As per the water system’s current Permit To Take Water (PTTW), the amount of raw water taken into the Lake Huron WTP cannot exceed 454.98 million litres/day. This converts to 5266 litres/second.

The water taking PTTW for 2018 was # 4725-87SS3J. As per the water system’s current Municipal Drinking Water License, the rated capacity of the WTP is 340.0 million litres/day, which converts to 3935 litres/second. The maximum daily volume of treated water that flows from the treatment plant into the distribution system shall not exceed this value. The following table contains a flow summary, with comparison to the system’s rated capacity and permit limits in order to assess the capability of the system to meet existing and planned uses. Total Daily

Flow (ML/day)

Total Daily Flow (% of

Capacity)

Daily Instantaneous

Peak Flow (L/s)

PTTW – permitted raw water taking amount

454.98 100.00% 5266

Raw Water Flow – Average Day 129.6 28.48% 2487 Raw Water Flow – Max. Day 198.8 43.69% 3258

WTP Rated Capacity 340.0 100.00% 3935 Treated Water Flow – Average Day 122.8 36.12% 1944 Treated Water Flow – Max. Day 192.2 56.53% 3495 A complete flow summary for the LHPWSS can be found in Appendix A. The majority of the volume of treated drinking water from the LHPWSS is used by the City of London. As shown in Figure 11, London takes 84.19% of the volume, with the other seven municipalities using the remaining 15.81%.


Figure 11: 2018 Treated Water Volumes per Municipality

2018 CHEMICAL CONSUMPTION A variety of water treatment chemicals are used at the Lake Huron WTP to ensure safe, clean drinking water. The following table outlines the chemicals most frequently used for the LHPWSS. As part of the system’s registered ISO14001 Environmental Management System, objectives and targets are currently in place to optimize chemical usage. Chemical Used for Total Amount

Used in 2018 Aluminum sulphate Coagulation 927,664 kg Powdered activated carbon

Taste and odour control (seasonally)

35,093 kg

Chlorine gas Mussel control 45,097 kg Chlorine gas Primary disinfection 52,199 kg Sodium hydroxide pH adjustment for corrosion

control 952,422 kg

Polymer Filter aid (used on an as-required basis)

Not available

Residuals Management Facility – dewatering aid

14,039 kg


Chemical Used for Total Amount Used in 2018

Sodium Bisulphite Residuals Management Facility -dechlorination

97,478 kg

2018 WATER QUALITY SAMPLING AND MONITORING The LHPWSS consistently provides treated drinking water with water quality above the standards required by provincial regulation. Where desirable, the LHPWSS standards are more stringent than what is required by regulation. For example, the target at the Lake Huron WTP for treated water turbidity (a measure of the cloudiness of water) is 10 times more stringent than the provincial standard. The LHPWSS is practicing continual improvement to ensure that high drinking water standards are maintained and enhanced where possible. All water quality sampling at the LHPWSS is performed in accordance with the Safe Drinking Water Act and its associated regulations. All samples are collected by licensed operating authority personnel and are submitted to Canadian Association for Laboratory Accreditation (CALA)/Standards Council of Canada (SCC) accredited laboratories for both bacterial and chemical analysis. In 2018, a total of 629 microbiological samples were collected from raw, treated and distribution system water, and were tested for E Coli, total coliforms and heterotrophic plate count (HPC). There were no incidents of adverse microbiological test results in 2018. Annual samples are collected and tested for inorganics (metals) and organics which include herbicides, pesticides and volatile organic parameters. Quarterly sampling is also conducted for trihalomethanes and haloacetic acids (disinfection by-products), nitrates and nitrites. In addition, the WTP operator samples the raw, in-process and treated water six times per day and carries out an array of physical and chemical tests for operational control. As required by regulation, the LHPWSS also prepares an Annual Report which includes a summary of water quality test results and a maintenance report. The 2018 Annual Report can be found in Appendix B.


RESEARCH & PARTNERSHIPS The LHPWSS acknowledges the importance of scientific research on water quality and the effects on human health. The LHPWSS has partnered with the Natural Sciences and Engineering Research Council (NSERC) Chairs in Drinking Water Research at the University of Waterloo and University of Toronto, to pursue research opportunities. The LHPWSS is a member of the Water Research Foundation (WRF). In addition, the LHPWSS continues to evaluate and conduct specific research on the efficacy of the existing treatment processes, optimizing and improving treatment systems, and evaluating the potential and need of more advanced treatment alternatives. The LHPWSS participates in the Ministry of the Environment, Conservation and Parks (MECP) Drinking Water Surveillance Program (DWSP) and intake monitoring studies.

ALGAL TOXINS MONITORING PROGRAM For several years, the MECP has conducted a special algal toxins monitoring program through their Drinking Water Surveillance Program (DWSP). Samples of raw source water and treated drinking are collected weekly from various drinking water systems throughout the province. The purpose of the research study is to determine the levels of microcystins in drinking water. The LHPWSS has been participating in this monitoring program since 2016.

In 2018, participation in the study took place over a six month period, June through November. A total of 24 samples of both raw and treated water were submitted to the MECP laboratory for analysis. Of these samples, there were no detectable results for microcystins (total) in either the raw or treated water.

PILOT STUDY – LEAD RESEARCH In 2018, a pilot study was undertaken at the Lake Huron WTP. The pilot study is a research project initiated by the University of Waterloo NSERC Chair. The study involves dosing different treatment chemicals through six (6) different segments of lead pipe. The main objective of the pilot study is to compare pH adjustment, orthophosphate and sodium silicates as lead corrosion inhibition strategies. The study also involves monitoring the formation of the passivating layer on the lead pipes, as well as biofilm formation.


Figure 12: Pilot study setup, which includes several chemical dosing systems and six (6) lead pipe segments, placed horizontally on the racking.


MINISTRY INSPECTION ANNUAL INSPECTION The Ontario Ministry of the Environment, Conservation and Parks (MECP) conducts an inspection of the LHPWSS annually. A MECP inspection took place on December 5, 2018. The final inspection report was issued on March 7, 2019. There were no non-compliances identified in the inspection report. The final inspection rating received for the 2018-2019 reporting year was 100.00%.

Regional Water Supply Division 235 North Centre Road

Suite 200 London, ON N5X 4E7

519-930-3505

www.huronelginwater.ca

http://www.huronelginwater.ca/

APPENDIX A – 2018 FLOW SUMMARY

MONTH January February March April May June July August September October November DecemberML ML ML ML ML ML ML ML ML ML ML ML

DAY

1 112.74 176.01 121.83 108.72 131.05 143.86 157.26 150.05 138.94 123.94 132.89 115.312 134.38 114.47 121.64 107.70 128.75 186.44 169.28 156.57 138.35 112.68 101.49 110.943 113.55 118.21 130.08 112.91 127.01 132.37 168.51 150.95 130.82 141.22 132.32 110.834 115.52 118.56 110.69 104.82 123.32 130.57 173.28 151.87 154.58 119.52 122.49 108.155 118.23 142.66 131.60 96.27 128.28 133.46 141.88 145.98 151.23 134.47 121.70 115.336 118.15 65.50 119.85 138.63 147.18 135.11 158.79 140.23 151.38 117.73 87.87 116.367 117.89 142.48 142.34 130.02 103.39 151.96 144.82 147.04 148.21 117.94 157.08 118.538 118.08 96.96 120.11 119.59 145.52 191.62 147.95 139.19 141.16 128.47 83.38 107.639 119.08 141.59 119.79 117.61 125.34 151.17 161.54 125.91 130.88 111.24 146.48 115.68

10 118.54 112.19 118.73 117.07 140.76 140.13 198.17 131.14 139.63 134.51 116.76 116.6811 118.15 123.67 117.65 115.49 115.71 176.97 167.20 144.08 129.30 131.82 117.76 115.4012 119.71 105.71 114.02 117.19 121.18 147.72 198.76 169.54 129.54 117.18 117.87 135.2113 132.97 129.29 124.44 117.19 123.87 185.02 168.39 119.66 146.70 118.20 118.01 115.7014 126.66 111.29 116.24 127.54 120.23 132.73 189.12 156.49 137.24 117.20 108.26 114.8615 113.67 109.53 118.45 91.97 135.59 157.80 134.41 148.50 155.58 128.90 116.33 135.2016 115.83 132.86 118.69 128.41 111.25 140.50 166.44 143.44 156.16 140.29 112.55 125.9417 132.42 113.13 118.63 123.96 149.17 195.15 142.04 144.50 162.75 117.23 107.36 99.7518 127.55 144.97 112.23 89.03 132.21 147.12 151.81 144.49 155.31 119.39 108.79 145.0019 114.07 110.61 115.05 119.00 126.01 161.82 155.50 141.12 115.31 115.96 115.20 117.7020 130.94 115.48 115.13 117.56 129.04 154.36 147.76 133.85 126.26 117.28 117.13 128.3721 118.61 111.16 122.89 115.48 128.62 138.44 153.61 137.90 146.54 128.74 118.24 130.3722 118.23 74.39 114.82 122.09 128.21 147.78 141.68 134.27 140.64 116.40 114.61 114.2423 116.87 151.81 111.67 123.21 124.63 138.19 113.37 138.94 131.27 118.79 115.93 115.4324 145.13 96.02 112.67 125.27 128.61 119.23 116.60 131.52 152.69 119.09 105.24 127.9525 110.71 137.77 113.08 131.98 146.45 139.01 147.42 134.93 108.13 118.43 116.33 111.8326 93.17 145.67 128.80 132.48 155.08 159.38 144.48 141.82 146.59 128.18 108.39 107.8527 158.00 108.07 117.45 135.12 151.36 125.22 127.95 116.74 118.11 110.56 96.43 106.3028 158.76 123.18 117.30 130.43 159.30 149.39 143.34 129.09 138.45 120.08 116.44 116.8129 165.39 116.12 110.40 186.22 155.53 134.83 149.99 131.99 111.11 114.20 116.0630 13.95 116.77 119.79 143.91 192.35 136.77 140.35 119.39 135.33 107.69 116.6731 133.19 112.02 184.71 132.73 146.23 109.06 116.76

Total 3750.1 3373.2 3690.8 3546.9 4202.0 4560.4 4735.7 4386.4 4173.1 3780.9 3455.2 3648.8 47303.7Minimum 14.0 65.5 110.7 89.0 103.4 119.2 113.4 116.7 108.1 109.1 83.4 99.8 14.0Maximum 165.4 176.0 142.3 138.6 186.2 195.2 198.8 169.5 162.8 141.2 157.1 145.0 198.8Average 121.0 120.5 119.1 118.2 135.5 152.0 152.8 141.5 139.1 122.0 115.2 117.7 129.6

Note: (i) As per the water system’s current Permit To Take Water (PTTW), the amount of raw water taken into the Lake Huron Water Treatment Plant cannot exceed 454.98 million litres/day.


1. RAW WATER INTAKE – FLOW (ML/DAY)

MONTH January February March April May June July August September October November DecemberL/s L/s L/s L/s L/s L/s L/s L/s L/s L/s L/s L/s

DAY

1 2202.78 2931.37 2074.31 2127.66 2138.08 2403.70 3111.34 3100.12 3109.61 2246.41 2891.20 1935.422 2897.45 2138.19 2078.70 2113.66 2615.16 3188.31 3093.06 3093.98 2226.39 2637.85 1965.16 2007.183 1817.48 2125.81 2029.75 3092.25 2410.76 2388.77 3092.25 3116.55 2201.85 2193.98 2216.78 1961.574 1815.74 2133.68 2082.29 3190.05 2144.21 2395.83 3121.88 3187.38 3143.75 1974.77 1957.29 2838.775 1822.69 3051.97 2193.17 2139.00 2210.65 2243.87 3225.93 2864.12 3186.34 2899.07 2796.99 1945.956 1817.48 2987.38 2918.40 2170.49 2109.38 2225.46 3123.73 3033.68 3128.01 1966.90 2900.81 2540.867 2504.17 2190.63 3127.08 2187.04 2343.40 3101.74 2953.24 3128.01 2962.85 1970.37 3001.39 1947.578 1923.26 2184.38 2102.31 2142.48 2234.26 3161.11 2953.24 3125.35 2881.60 2227.31 2971.64 1945.839 1937.15 2193.17 2098.84 2082.18 2173.84 2911.34 3248.61 3083.45 3162.04 2096.99 2968.17 1947.5710 1922.34 2088.31 2102.31 2086.57 2190.51 3151.50 3093.06 2224.65 2076.04 2790.74 2221.99 1960.6511 1922.34 2193.98 2100.46 2081.25 2214.24 3065.16 3107.06 2211.46 2930.56 2220.25 2216.78 1929.2812 2145.02 2142.48 2233.33 1967.82 2187.96 3017.94 3121.06 3054.63 2968.98 2066.44 1956.37 2875.4613 2921.88 2179.17 2211.57 2099.65 2109.26 3174.31 3105.32 3114.93 2827.43 2033.33 1957.29 2173.8414 2791.67 2071.76 2139.00 2034.14 2107.52 2984.72 3184.03 3035.42 3072.11 2045.49 1966.90 1976.3915 2856.25 3047.69 2133.68 1965.16 2097.92 2656.25 2226.39 2264.81 3003.13 2858.91 1948.50 2860.7616 3017.94 2193.17 2140.74 2121.53 2888.54 3107.06 3214.58 3164.70 3072.11 2248.26 1974.77 2864.1217 3023.15 2088.43 2133.68 2149.42 2117.13 3159.49 3039.81 3160.30 3112.38 2226.27 1954.63 3083.4518 2703.47 2092.59 2119.91 2574.07 2113.66 3121.88 3068.63 3003.94 2932.29 2957.64 1998.26 2190.6319 2050.69 2083.91 2126.74 2111.92 2985.65 3060.76 3068.63 2304.98 2896.53 2954.17 1956.37 1945.9520 3011.00 2094.44 2134.61 2139.00 2104.17 3222.34 2931.48 2180.90 2942.01 1969.44 1938.08 2858.9121 2056.02 2084.84 2886.00 2215.86 2113.66 3149.88 3098.26 2224.65 2942.01 2232.41 1946.76 2976.8522 2052.43 2020.14 2054.28 2134.61 2119.79 3117.59 2218.52 2199.31 2421.18 2204.51 2242.94 1945.9523 2133.80 3063.43 2104.86 2130.32 2116.32 3258.22 2205.32 2236.81 2190.63 2206.37 2169.68 1945.0224 2944.56 2104.05 2079.63 2139.00 3202.31 2199.31 3088.66 2230.79 2943.63 2196.64 1941.55 2183.5625 3044.21 2988.19 2104.05 2186.11 2216.78 2219.44 3052.08 2240.28 2831.83 2206.25 1933.68 2006.2526 2885.07 2935.76 2993.52 2159.14 2705.09 3144.68 3089.58 2734.95 2949.88 2201.85 1955.56 2024.5427 3094.91 2123.26 2117.94 2229.05 2576.74 3190.86 3023.26 2197.57 1966.78 2111.92 2720.95 1951.1628 3130.67 2081.25 2137.15 2154.75 2592.36 3145.49 3047.69 3073.84 2984.72 2202.66 2232.52 1949.4229 3059.84 2139.93 3139.35 3046.88 3045.83 3112.27 3047.69 2218.52 2131.13 2922.69 1949.4230 2087.50 2125.00 2142.48 2241.20 3089.58 2222.92 2228.13 2084.84 2869.44 2128.47 1945.0231 2951.50 2137.15 3111.34 3127.08 2971.64 1979.05 1946.76

Minimum 1,816 2,020 2,030 1,965 2,098 2,199 2,205 2,181 1,967 1,967 1,934 1,929 1,816

Maximum 3,131 3,063 3,127 3,190 3,202 3,258 3,249 3,187 3,186 2,958 3,001 3,083 3,258Average 2,469 2,343 2,231 2,240 2,372 2,910 2,980 2,737 2,779 2,294 2,265 2,213 2,487

Note: (i) As per the water system’s current Permit To Take Water (PTTW), the amount of raw water taken into the Lake Huron Water Treatment Plant cannot exceed 454.98 million litres/day. This converts to 5266 litres/second.


2. RAW WATER INSTANTANEOUS PEAK FLOW (L/s)

MONTH January February March April May June July August September October November DecemberML ML ML ML ML ML ML ML ML ML ML ML

DAY

1 106.24 169.97 106.99 103.56 125.91 136.89 150.86 142.61 132.83 117.33 128.42 109.142 128.47 108.30 100.92 101.40 122.84 181.27 162.97 147.32 132.07 105.37 91.98 105.223 107.22 112.11 122.49 106.02 120.63 126.19 160.06 143.86 124.20 134.49 127.91 105.14 109.40 112.26 103.84 95.10 116.92 123.86 164.35 143.84 147.60 112.31 116.85 102.075 112.28 135.29 125.34 90.55 121.67 126.84 135.09 138.43 144.29 128.66 115.70 110.816 112.03 56.33 112.36 132.21 137.99 126.66 153.01 132.83 144.12 110.70 73.79 110.057 111.82 136.11 136.01 121.23 95.12 145.14 137.63 139.13 141.68 111.05 150.86 110.648 112.33 89.16 112.25 112.41 137.44 186.91 141.31 131.28 135.57 122.60 79.09 102.979 112.23 134.58 112.39 112.38 117.36 144.65 152.71 118.39 124.32 104.42 140.87 109.89

10 112.09 105.44 112.50 111.15 130.65 133.32 189.76 123.00 133.98 128.13 112.09 110.6711 112.19 117.23 112.19 109.18 107.19 170.58 160.00 137.66 123.86 127.42 112.05 110.2512 112.47 98.83 106.85 112.18 115.31 141.08 192.20 162.72 124.47 112.54 111.87 129.5513 126.69 122.23 118.31 112.38 118.40 178.87 160.50 111.41 142.06 112.76 112.23 110.1114 120.38 103.74 109.82 120.24 113.52 128.33 183.99 149.73 132.38 112.94 102.43 110.5815 106.50 102.84 112.26 84.95 128.80 151.68 126.03 143.49 150.96 122.38 110.47 129.716 104.29 127.33 112.54 122.78 105.20 133.65 161.46 137.35 151.69 134.56 107.79 120.0717 126.44 106.28 112.52 118.12 143.02 190.45 134.89 135.62 157.87 109.52 101.79 88.0418 120.73 108.25 105.36 82.14 125.33 140.80 144.46 135.71 149.68 114.91 103.99 140.0219 107.90 103.83 108.00 115.58 119.12 154.98 150.08 133.07 109.59 111.09 110.49 110.7120 125.09 107.97 108.36 110.45 122.66 147.22 139.75 124.49 121.56 112.92 110.99 121.1121 112.23 103.93 116.59 110.74 123.30 131.85 145.89 128.68 141.10 123.14 111.97 124.9122 111.35 58.88 105.77 117.52 121.89 139.73 135.51 127.29 134.10 112.02 105.71 109.8723 110.56 145.02 105.93 115.96 117.84 132.65 106.17 131.54 124.34 112.72 111.27 109.924 138.35 90.55 105.98 117.40 121.29 112.43 106.95 123.40 144.90 112.58 101.60 121.1425 102.09 130.38 105.86 120.23 140.27 131.92 141.46 126.57 98.02 112.32 110.45 106.0226 86.73 135.78 123.59 118.71 148.56 152.04 136.40 132.75 141.21 120.78 101.14 101.8827 150.05 101.58 111.07 128.92 146.12 117.10 120.02 110.75 110.79 104.14 90.36 100.4328 153.56 110.99 111.05 123.99 153.09 140.58 135.78 120.77 131.13 114.52 109.67 111.0329 157.83 110.87 105.20 179.78 148.86 127.10 143.28 126.38 106.00 104.41 110.4430 9.16 110.51 112.28 137.17 186.45 129.19 133.49 112.47 129.48 101.24 111.1931 123.11 105.58 178.59 126.06 139.42 99.96 112.19

Total 3541.8 3135.2 3464.1 3345.0 3993.0 4363.0 4511.6 4149.9 3989.2 3593.8 3269.5 3465.7 44821.7Minimum 9.2 56.3 100.9 82.1 95.1 112.4 106.2 110.8 98.0 100.0 73.8 88.0 9.2Maximum 157.8 170.0 136.0 132.2 179.8 190.5 192.2 162.7 157.9 134.6 150.9 140.0 192.2Average 114.3 112.0 111.7 111.5 128.8 145.4 145.5 133.9 133.0 115.9 109.0 111.8 122.8


3. TREATED WATER FLOW (ML/DAY)

Note: (i) As per the water system’s current Municipal Drinking Water Licence, the rated capacity of the Water Treatment Plant is 340.0 million litres/day. The maximum daily volume of treated water that flows from the treatment plant into the distribution system shall not exceed this value.

MONTH January February March April May June July August September October November DecemberL/s L/s L/s L/s L/s L/s L/s L/s L/s L/s L/s L/s

DAY

1 2125.81 2251.27 1743.98 1310.19 1996.99 2175.46 2675.81 2481.60 2200.35 2093.06 2699.42 1303.472 2125.81 1318.06 1728.24 1335.19 2377.66 2195.83 2640.74 2192.36 2222.80 2151.74 1305.79 1301.163 1318.06 1328.24 1912.38 2666.78 2361.92 2177.89 2599.07 2659.95 2088.43 2150.58 2178.82 1529.054 1322.69 1332.87 1231.25 2669.10 2009.49 2201.50 2707.41 2567.13 2284.95 1322.69 1327.20 2112.275 1325.00 2299.65 1983.56 2176.62 2008.33 2107.64 3494.68 2552.66 2199.07 2198.03 2193.52 1317.136 1334.03 2314.47 2618.17 2167.59 2025.23 2170.95 3052.89 2357.29 2219.44 1334.03 2576.27 1302.317 1347.45 2148.50 2618.17 2114.58 1964.24 2172.11 2306.60 2697.22 2254.40 1317.13 2214.93 1313.668 1326.16 2084.03 1325.00 1331.71 1980.09 2265.74 2315.51 2625.12 2712.96 1289.81 2423.84 1312.509 1322.69 2084.03 1336.23 1329.40 1964.24 2282.75 2570.83 2665.74 2175.46 1236.81 2151.74 1330.5610 1321.53 1246.99 1337.27 1332.87 1992.59 2183.33 2629.63 2179.98 2219.44 2158.56 1326.16 1310.1911 1322.69 2150.69 1337.27 1354.28 2061.34 2192.36 2623.96 2182.18 2105.56 2147.11 1318.06 1305.7912 1327.20 2093.06 2155.21 1332.87 1757.64 2220.60 2653.36 2684.84 2273.73 1331.71 1330.56 2132.6413 2164.12 2140.51 2099.88 1331.71 2028.70 2672.34 2581.02 2635.19 2649.88 1320.37 1323.84 1319.2114 2519.79 1237.96 1327.20 1759.84 1761.00 2204.75 2585.42 2602.43 2198.03 1332.87 1336.23 1311.3415 2492.71 2159.61 1336.23 1746.30 2002.78 2610.30 1905.44 2190.05 2268.06 2159.72 1336.23 2222.8016 2199.19 2159.61 1325.00 1651.50 1989.00 2680.32 2673.50 2534.61 2304.17 2228.47 1313.66 2179.9817 2168.87 1274.07 1325.00 1802.89 2088.54 2548.15 2570.83 2565.16 2703.94 2193.52 1332.87 2207.0618 2143.75 1279.86 1911.34 1936.00 1972.22 2236.34 2667.82 2428.36 2712.96 2133.68 1319.21 2165.2819 1275.23 1288.89 1277.55 1806.13 1934.95 2668.98 2674.65 2172.11 2200.23 2149.42 1317.13 1315.9720 2148.38 1275.23 2040.05 1308.10 1971.06 2656.60 2323.50 1941.67 2230.79 1349.77 1322.69 2152.8921 1328.24 1473.96 2377.66 1312.50 1956.25 2213.77 2157.41 2283.91 2393.40 2169.79 1321.53 2133.8022 1325.00 1216.44 1259.49 1686.34 1975.46 2146.06 2126.97 2128.13 2156.13 1331.71 1320.37 1310.1923 2006.02 2133.80 1259.49 1965.39 1990.28 2187.85 2079.40 2162.96 2122.45 1328.24 1337.27 1540.9724 2377.55 1306.94 1256.02 1823.03 2250.12 1328.24 2490.63 1932.52 2200.23 1327.20 1310.19 2169.7925 2069.44 2573.15 1256.02 1767.71 2168.75 2160.76 2647.69 2127.89 2185.76 1326.16 1325.00 1315.9726 2044.44 2172.11 2685.88 1765.63 2167.71 2192.36 2591.20 2179.98 2354.98 2160.88 1311.34 1323.8427 2497.34 2061.46 1308.10 2000.46 2195.83 2187.85 2111.00 1381.02 1308.10 1239.12 2146.18 1321.5328 2100.93 1879.51 1317.13 2157.41 2279.51 2709.61 2126.85 2161.81 2288.43 2060.30 1313.66 1330.5629 2150.69 1312.50 2121.30 2279.51 2622.57 2142.71 2260.19 2177.66 1248.15 1315.97 1326.1630 2048.96 1313.66 1337.27 2169.79 2657.64 2136.00 2167.59 1326.16 2148.26 1298.96 1327.2031 2187.96 1315.97 2524.54 2459.03 2525.69 1315.97 1332.87

Total 56,768 50,285 50,631 52,401 64,206 69,031 77,322 72,227 66,738 53,255 47,649 48,878 709,389Minimum 1,275 1,216 1,231 1,308 1,758 1,328 1,905 1,381 1,308 1,237 1,299 1,301 1,216Maximum 2,520 2,573 2,686 2,669 2,525 2,710 3,495 2,697 2,713 2,228 2,699 2,223 3,495Average 1,831 1,796 1,633 1,747 2,071 2,301 2,494 2,330 2,225 1,718 1,588 1,577 1,944

Note: (i) As per the water system’s current Municipal Drinking Water Licence, the rated capacity of the Water Treatment Plant is 340.0 million litres/day. This converts to 3935 litres/second. The maximum daily volume of treated water that flows from the treatment plant into the distribution system shall not exceed this value.


4. TREATED WATER INSTANTANEOUS PEAK FLOW (L/s)

APPENDIX B – 2018 ANNUAL REPORT

Drinking-Water Systems Regulation O. Reg. 170/03

Drinking Water Systems Regulations (PIBS 4435e01) February 2019

Page 1 of 10

Drinking-Water System Number: 210000791

Drinking-Water System Name: Lake Huron Primary Water Supply System

Drinking-Water System Owner: Lake Huron Primary Water Supply System Joint Board of Management

Drinking-Water System Operating Authority:

Ontario Clean Water Agency (OCWA)

Drinking-Water System Category: Large Municipal Residential

Period being reported: January 1, 2018 through December 31, 2018

Complete if your Category is Large Municipal Residential or Small Municipal Residential Does your Drinking-Water System serve more than 10,000 people? Yes [X] No [ ] Is your annual report available to the public at no charge on a web site on the Internet? Yes [X] No [ ]

Location where Summary Report required under O. Reg. 170/03 Schedule 22 will be available for inspection.

Complete for all other Categories. Number of Designated Facilities served: Did you provide a copy of your annual report to all Designated Facilities you serve? Yes [ ] No [ ] Number of Interested Authorities you report to: Did you provide a copy of your annual report to all Interested Authorities you report to for each Designated Facility? Yes [ ] No [ ]

Lake Huron and Elgin Area Water Supply Systems c/o Regional Water Supply Division 235 North Centre Road, Suite 200 London, ON N5X 4E7 https://huronelginwater.ca/ Lake Huron Water Treatment Plant 71155 Bluewater Hwy. Grand Bend, ON

N/A

N/A

https://huronelginwater.ca/



Page 2 of 10

List all Drinking-Water Systems (if any), which receive all of their drinking water from your system: Systems that receive their drinking water from the LHPWSS:

Drinking Water System Name Drinking Water System Number

City of London 260004917

Municipality of Bluewater 260006542

Municipality of Lambton Shores (East Lambton Shores Water Distribution System)

260006568

Township of Lucan-Biddulph 260003071

Municipality of Middlesex Centre (Middlesex Centre Distribution System)

260004202

Municipality of North Middlesex 260006529

Municipality of Strathroy-Caradoc (Strathroy-Caradoc Distribution System)

260080106

Municipality of South Huron (South Huron Water Distribution System)

220001520

Systems that may receive their drinking water from the LHPWSS:

Drinking Water System Name Drinking Water System Number

Municipality of Lambton Shores (West Lambton Shores Distribution System) *Normally supplied by the Lambton Area Water Supply System (LAWSS) but a connection to the LHPWSS exists

260006581

Did you provide a copy of your annual report to all Drinking-Water System owners that are connected to you and to whom you provide all of its drinking water?

Yes [X] No [ ]

Indicate how you notified system users that your annual report is available, and is free of charge.

[X] Public access/notice via the web [X] Public access/notice via Government Office [ ] Public access/notice via a newspaper [ ] Public access/notice via Public Request [ ] Public access/notice via a Public Library [X] Public access/notice via other method ____News Release



Page 3 of 10

Describe your Drinking-Water System

The Lake Huron Water Treatment Plant (WTP) employs pre-chlorination, screening, powder activated carbon addition (seasonally on an as-required basis), coagulation, flocculation, sedimentation, dual-media filtration, post-chlorination, and pH adjustment using sodium hydroxide to treat raw water obtained from Lake Huron. The WTP intake crib and raw water intake pipe have an estimated gross capacity of 454.6 Megalitres/day (MLD). The WTP rated capacity is 340.0 MLD. A Residuals Management Facility (RMF) providing equalization, clarification, sediment thickening and dechlorination is also housed in the main complex where thickened sediment is dewatered by centrifuges and the sediment is sent to the landfill for final disposal. Clarified and dechlorinated liquid streams are sent back to Lake Huron through the plant drain via the Diversion Chamber. The transmission system is comprised of the McGillivray Booster Pumping Station and Reservoir, the Exeter-Hensall Booster Pumping Station and Reservoir, the Arva Terminal Reservoir, the Komoka-Mt. Brydges Booster Pumping Station (PS#4) and the associated interconnecting transmission water mains, which includes the primary, Strathroy, Exeter-Hensall, and Komoka-Mt. Brydges transmission water mains. The drinking water system is monitored at various locations throughout the system via a Supervisory Control and Data Acquisition (SCADA) system.

List all water treatment chemicals used over this reporting period

Filter Aid Polymer (on an as-required basis) Aluminum Sulphate Powder Activated Carbon Chlorine Gas Sodium Hydroxide Sodium Hypochlorite (Exeter Hensall Pumping Station) Dewatering Polymer (Residuals Management Facility) Sodium Bisulphite (Residuals Management Facility)

Were any significant expenses incurred to? [X] Install required equipment [X] Repair required equipment [X] Replace required equipment

Please provide a brief description and a breakdown of monetary expenses incurred

Capital Projects:

Distressed pipe segment replacement

600V Motor Control Center (MCC) replacements

Instrumentation replacements

Travelling screen #1 replacement

Travelling screen piping replacements

High lift pump #5 isolation valve replacement



Page 4 of 10

Filters #2, 6, 7 and 9 rebuilds

Alum system flow meter installation

Powder activated carbon (PAC) system generator replacement

Low lift and high lift roof replacements

Concrete crack injection

Drain piping replacement

Surge valve replacement

Security upgrades

Server room fire suppression system installation

B-Line monitoring station relocation

Removal of obsolete control and electrical panels

HVAC piping isolators installation

Low lift sluice gate repairs

Installed new guard railing in the flocculation rooms

McGillivray flow meter replacement

HVAC modifications – administration area

High lift HVAC fan repairs

Maintenance Projects:

Installed LED lighting

Installed McGillivray system isolation valve

Removal of redundant SCADA communications components

Monitoring stations KM1 and KM2 chlorine analyzer drain system improvements

North Middlesex flow meter replacement

Installed isolation valve on backwash pump #3

HVAC compressor replacement

Clarifier gear drive rebuild

Residuals Management Facility (RMF) screw conveyor rebuilds

RMF north equalization tank modifications

Provide details on the notices submitted in accordance with subsection 18(1) of the Safe Drinking-Water Act or section 16-4 of Schedule 16 of O.Reg.170/03 and reported to Spills Action Centre

Incident Date Parameter Result Unit of

Measure Corrective

Action

Corrective Action Date

NA NA NA NA NA NA



Page 5 of 10

Microbiological testing done under the Schedule 10, 11 or 12 of Regulation 170/03, during this reporting period.

Number

of Samples

Range of E.Coli Results

(CFU/100mL) (min #)-(max #)

Range of Total Coliform Results


Range of HPC Results


Raw Water

104 (0)-( 100) (0)-(10,900) (<10)-(>2,000)

Treated Water (WTP)

252 (0)-(0) (0)-(0) (0)-(20)

Distribution (McGillivray PS)

53 (0)-(0) (0)-(0) (<10)-(40)

Distribution (North Exeter)

57 (0)-(0) (0)-(0) (<10)-(20)

Distribution (South Exeter)

57 (0)-(0) (0)-(0) (<10)-(10)

Distribution (Exeter-Hensall Reservoir)

53 (0)-(0) (0)-(0) (<10)-(20)

Distribution (Komoka-Mt. Brydges PS)

53 (0)-(0) (0)-(0) (<10)-(40)

Operational testing done under Schedule 7, 8 or 9 of Regulation 170/03 during the period covered by this Annual Report.

Parameter Number of Grab

Samples

Range of Results

(min #)-(max #)

Treated Water Free Chlorine (mg/L) Continuous Monitoring (0.55) – (1.64)

2120 (0.89) - (1.68)

Treated Water Turbidity (NTU) Continuous Monitoring (0.010) – (2.00)

2121 (0.004) - (1.41)

Filter #1 - Filtered Water Turbidity (NTU) Continuous Monitoring (0.008) - (0.721)










Page 6 of 10


Filter #10- Filtered Water Turbidity (NTU) Continuous Monitoring (0.019) - (0.260)



Combined Filtered Water Turbidity (NTU)

2119 (0.009) - (0.112)

Summary of Inorganic parameters tested during this reporting period (*All tests were conducted on treated water leaving the WTP unless otherwise noted)

Parameter Sample Date Result Value Unit of

Measure Exceedance

Antimony

January 18, 2018

0.00011

mg/L

NO

Arsenic

January 18, 2018

0.0002

mg/L

NO

Barium

January 18, 2018

0.0128

mg/L

NO

Boron

January 18, 2018

0.015

mg/L

NO

Cadmium

January 18, 2018

Not Detected

mg/L

NO

Chromium

January 18, 2018

0.00018

mg/L

NO

Lead (Komoka Mt-Brydges Monitoring Station #2)

January 18, 2018

April 25, 2018 July 13, 2018

October 24, 2018

Not Detected Not Detected Not Detected Not Detected

mg/L mg/L mg/L mg/L

NO

Mercury

January 18, 2018

Not Detected

mg/L

NO

Selenium

January 18, 2018

0.00011

mg/L

NO

Sodium

January 18, 2018

11.4

mg/L

NO



Page 7 of 10

Uranium

January 18, 2018

0.000038

mg/L

NO

Fluoride

January 18, 2018

0.08

mg/L

NO

Nitrite

January 18, 2018

April 25, 2018 July 13, 2018

October 24, 2018

Not Detected Not Detected Not Detected Not Detected

mg/L mg/L mg/L mg/L

NO

Nitrate

January 18, 2018

April 25, 2018 July 13, 2018

October 24, 2018

0.309 0.363 0.305 0.299

mg/L mg/L mg/L mg/L

NO

Summary of Organic parameters sampled during this reporting period or the most recent sample results (*All tests were conducted on treated water leaving the WTP unless otherwise noted)

Parameter Sample Date Result Value Unit of

Measure Exceedance

Alachlor January 18, 2018 Not Detected mg/L NO

Atrazine + N-dealkylated metabolites

January 18, 2018 0.00003

mg/L NO

Azinphos-methyl January 18, 2018 Not Detected mg/L NO

Benzene January 18, 2018 Not Detected mg/L NO

Benzo(a)pyrene January 18, 2018 Not Detected mg/L NO

Bromoxynil January 18, 2018 Not Detected mg/L NO

Carbaryl January 18, 2018 Not Detected mg/L NO

Carbofuran January 18, 2018 Not Detected mg/L NO

Carbon Tetrachloride January 18, 2018 Not Detected mg/L NO

Chlorpyrifos January 18, 2018 Not Detected mg/L NO

Diazinon January 18, 2018 Not Detected mg/L NO

Dicamba January 18, 2018 Not Detected mg/L NO

1,2-Dichlorobenzene January 18, 2018 Not Detected mg/L NO

1,4-Dichlorobenzene January 18, 2018 Not Detected mg/L NO

1,2-Dichloroethane January 18, 2018 Not Detected mg/L NO

1,1-Dichloroethylene (vinylidene chloride)

January 18, 2018 Not Detected

mg/L

NO



Page 8 of 10

Dichloromethane January 18, 2018 Not Detected mg/L NO

2-4 Dichlorophenol January 18, 2018 Not Detected mg/L NO

2,4-Dichlorophenoxy acetic acid (2,4-D)


mg/L NO

Diclofop-methyl January 18, 2018 Not Detected mg/L NO

Dimethoate January 18, 2018 Not Detected mg/L NO

Diquat January 18, 2018 Not Detected mg/L NO

Diuron January 18, 2018 Not Detected mg/L NO

Glyphosate January 18, 2018 Not Detected mg/L NO

Haloacetic Acids (HAA’s) (Arva Reservoir)

January 18, 2018

April 25, 2018 July 13, 2018

October 24, 2018

Not Detected 0.0144 0.0087

Not Detected

mg/L mg/L mg/L mg/L

NO

Haloacetic Acids (HAA’s) (Arva Reservoir) Annual Running Average

2018

0.0050

mg/L NO

Haloacetic Acids (HAA’s) (Exeter-Hensall Monitoring Station #3)

January 18, 2018

April 24, 2018 July 13, 2018

October 24, 2018

0.0059 0.0160 0.0096 0.0144

mg/L mg/L mg/L mg/L

NO

Haloacetic Acids (HAA’s) (Exeter-Hensall Monitoring Station #3) Annual Running Average

2018

0.0115

mg/L NO

Haloacetic Acids (HAA’s) (Komoka Mt-Brydges Monitoring Station #2)

January 18, 2018

April 13, 2017 July 17, 2017

October 5, 2017

Not Detected 0.0143 0.0098 0.0061

mg/L mg/L mg/L mg/L

NO

Haloacetic Acids (HAA’s) (Komoka Mt-Brydges Monitoring Station #2) Annual Running Average

2018 0.0076 mg/L NO



Page 9 of 10

Haloacetic Acids (HAA’s) (Strathroy-Caradoc Monitoring Station #2)

January 18, 2018

April 13, 2017 July 17, 2017

October 5, 2017

Not Detected 0.0126 0.0095 0.0065

mg/L mg/L mg/L mg/L

NO

Haloacetic Acids (HAA’s) (Strathroy-Caradoc Monitoring Station #2) Annual Running Average

2018

0.0072

mg/L NO

Malathion January 18, 2018 Not Detected mg/L NO

2-Methyl-4-chlorophenoxyacetic acid


mg/L NO

Metolachlor January 18, 2018 Not Detected mg/L NO

Metribuzin January 18, 2018 Not Detected mg/L NO

Monochlorobenzene January 18, 2018 Not Detected mg/L NO

Paraquat January 18, 2018 Not Detected mg/L NO

Pentachlorophenol January 18, 2018 Not Detected mg/L NO

Phorate January 18, 2018 Not Detected mg/L NO

Picloram January 18, 2018 Not Detected mg/L NO

Polychlorinated Biphenyls (PCB)

January 18, 2018 Not Detected mg/L NO

Prometryne January 18, 2018 Not Detected mg/L NO

Simazine January 18, 2018 Not Detected mg/L NO

Total Trihalomethanes (Arva Reservoir)

January 18, 2018

April 13, 2017 July 17, 2017

October 5, 2017

0.015 0.021 0.022 0.020

mg/L mg/L mg/L mg/L

NO

Total Trihalomethanes (THMs) (Arva Reservoir) Running Annual Average

2018

0.020

mg/L NO

Total Trihalomethanes (Exeter-Hensall Monitoring Station #3)

January 18, 2018

April 13, 2017 July 17, 2017

October 5, 2017

0.026 0.027 0.035 0.038

mg/L mg/L mg/L mg/L

NO



Page 10 of 10

Total Trihalomethanes (Exeter-Hensall Monitoring Station #3) Running Annual Average

2018

0.032

mg/L NO

Total Trihalomethanes (Komoka Mt-Brydges Monitoring Station #2)

January 18, 2018

April 13, 2017 July 17, 2017

October 5, 2017

0.020 0.024 0.027 0.027

mg/L mg/L mg/L mg/L

NO

Total Trihalomethanes (Komoka Mt-Brydges Monitoring Station #2) Running Annual Average

2018

0.025

mg/L NO

Total Trihalomethanes (Strathroy-Caradoc Monitoring Station #2)

January 18, 2018

April 13, 2017 July 17, 2017

October 5, 2017

0.016 0.018 0.025 0.022

mg/L mg/L mg/L mg/L

NO

Total Trihalomethanes (Strathroy-Caradoc Monitoring Station #2) Running Annual Average

2018

0.020

mg/L NO

Terbufos January 18, 2018 Not Detected mg/L NO

Tetrachloroethylene January 18, 2018 Not Detected mg/L NO

2,3,4,6-Tetrachlorophenol

January 18, 2018 Not Detected mg/L NO

Triallate January 18, 2018 Not Detected mg/L NO

Trichloroethylene January 18, 2018 Not Detected mg/L NO

2,4,6-Trichlorophenol January 18, 2018 Not Detected mg/L NO

Trifluralin January 18, 2018 Not Detected mg/L NO

Vinyl Chloride January 18, 2018 Not Detected mg/L NO

NOTE: During 2018, no Inorganic or Organic parameter(s) exceeded half the standard prescribed in Schedule 2 of Ontario Drinking Water Quality Standards.

Date post:	09-Jun-2019
Category:	Documents
Upload:	halien
View:	214 times
Download:	0 times

2018 COMPLIANCE REPORT · 2019-03-21 · 2018 Compliance Report LHPWSS Page 2 TABLE OF CONTENTS...

Documents