WaterConservation_041812

8/2/2019 WaterConservation_041812

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Purpose To seek Council approval

recommendation that Dallas ame

water conservation provisions in Chap49 of the Dallas City Code to inclupermanent restrictions limiting outdoirrigation to a maximum of two days p

week


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Outline Background

Twice Weekly WateringApproach

Implementation Process forTwice Weekly Watering

Variances, Compliance andCommunication Plan

Future Steps and Summary

Appendix Committee Questions and

Feedback

Drought Conditions

Bibliography of Council Briefings


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Background


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Background Large North Texas cities are moving

towards twice weekly wateringmeasures, including Dallas, FortWorth, Arlington and Irving

Austin is also rewriting its rules tomake twice-a-week restrictionspermanent

Tarrant Regional Water District(TRWD) is supportive of maximumtwice weekly watering

The Trinity River Authority said itwould encourage its customers tofollow the twice weekly rules if theTRWD recommends the measure

Other area cities are likely to follow


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Source for city boundaries: North Central Texas Council of Govern


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Background(continued)

Limiting irrigation to a maximum of two days perresult in long term benefits

Creates a lasting effect across the region for efficient w

Continues regional water conservation, especially imporpersistent drought

Although recent rains have improved current watavailability, a twice weekly watering schedule:

Provides predictable expectations to customers for land

Provides a way forward for Dallas and the region to: Continue to use water resources wisely

Maintain leadership role in conservation initiatives

Provides opportunities for future cost avoidance infrastructure and may result in reduced revenue


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Frequency of droughtconditions and future supplyshortages drive home theneed to strengthen lawn and

landscape watering guidelines Twice weekly watering

requirements can reduceoutdoor water use by up to16%

Permanently adopting twiceweekly requirements willfurther extend Dallas currentwater supplies


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Precipitation changesuncertain

Temperatures going up

since mid-1970s

Higher temperatures =more evaporation

Easier to cross the

threshold into drought Future droughts

expected to be hotterand drier

Twice Weekly Watering Ap

- Sustainability

Source: Presentation by David P. Brown, Ph.D., Regional Climate Services Dire

Southern Region, March 9, 2012


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Twice Weekly Watering Ap

Why It Will Work Fewer but heavier lawn watering encourages deeper roots

dry weather better. A deeply watered lawn should be able todays between watering.AgriLife Ext ension, Texas A&M System

Adjust schedule seasonally to allow for deep, infrequent wato maintain an even moisture level. About 1" of water per wsummer is a good starting point. How ard Garrett - The Dirt Do

With careful observation and experience, one can determinnumber of days between waterings.

Common bermuda grass lawns can go 5 to 7 days or longer betwwithout loss of quality.

It takes about 1/2 inch of water to achieve the desired wetting dhigh in sand, and about 3/4 inch of water if the soil is a loam.

For soils high in clay, an inch of water is usually necessary to wedesired depth.Larry Stein and Doug Welsh, Horti cult uri sts Texas Agri Life


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Twice Weekly Watering Ap Possible Impacts

200

250

300

350

400

450

500550

600

650

Oct Nov Dec Jan Feb Mar Apr May Jun Jul

Budget FY12 Projection with 2x Max Savings (BG) = 1

Twice weekly watering may result in approximately a $5M

expenses and a $15M decrease in revenues


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Implementation ProcessTwice Weekly Watering


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Implementation ProcessOrdinance Amendment

Amend water conservation provisions in Chathe Dallas City Code

Irrigation of landscaped areas with hose-end

or automatic irrigation systems will be limitemaximum of twice weekly:

Street addresses ending in even numbersnumber

Sundays and Thursdays

Street addresses ending in odd numbers Saturdays and Wednesdays

Apartments, office building complexes or property containing multiple addresses

Identified by lowest address number


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Examples of Watering Aon Any Day of the Week

Hand-held HoseHand-held B

Soaker Hose
http://www.dripirrigation.com/drip_irrigation_categories/94/drip_irrigation_families/15


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Examples of Watering Alloweon Designated Days

Hose-end Sprinkler

Automatic Irrigati


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Variances, Compliance aCommunication Plan


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Current ordinance allows for variances in theextreme hardship and need

Applicants must sign a compliance agreemen

Variance requirements may include: Must demonstrate that size of property prohibits ability

1 day Irrigation system audit

Variances may be revoked if applicant is deteto be not in compliance with conditions of ag

Examples: golf courses, campuses, athletic fi

Variances will require demonstrated reduced usage

Variances


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Compliance

Compliance will be accomplished usinCode Compliance and Dallas Water Upersonnel (similar to existing plan)

Any person who violates the ordinanguilty of a misdemeanor and, uponconviction, shall be punished by a finnot less than $250 and not more tha

$2,000 Each violation shall constitute a sepa

offense


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CommunicationPlan

City submits notification to news media, cusand other area agencies Provide education and outreach through Save Wa

awareness campaign Press release announcing permanent maximum tw

restrictions Provide customers information through water bill Update dallascityhall.com and savedallaswater.co

message to include mandatory watering schedule Use social media messaging through City of Dalla

Whisperer Campaign

Provide copy of adopted amendment to whocustomer cities


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Future Steps and Summa


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Future Steps Continue working with Department of Susta

Development & Construction Ensure consistency of development related code

water conservation goals Update Article X amendments to incorporate

recommendations from Water Conservation FiveStrategic Plan

Staff review of alternative compliance reguwater conservation program

Work with other regional water providers tocoordinate drought contingency plans Update Dallas State mandated Drought Co

Plan and Water Conservation Plan Continue monitoring water treatment plant

construction in order to make sure demand


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Summary Seek Council support to amend wate

conservation provisions in Chapter 49Dallas City Code to include permanenrestrictions limiting outdoor irrigationmaximum of two days per week (inclrescinding Stage 1 of Drought ContinPlan)


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Appendix

Committee Feedback and Questions

Drought Conditions

Bibliography of Council Briefings


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Committee Feedback andQuestions


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Committee Questions and Fe

Twice Weekly Watering briefed toTransportation and Environment Co

on April 9, 2012 The following pages contain questi

comments raised during the commmeeting


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Have You Engaged Landscape I nNeed Feedback f rom Stakeholder

Staff spoke to the Dallas Irrigation Association 17 Discussion included the possibility of making twice weekly

No concerns were raised during the question and answer p The leadership of the DIA spoke in favor of the measure, b

not been an official endorsement

Staff spoke at Texas Nursery and Landscape A(TNLA) meeting on March 13

Discussion included the possibility of twice weekly wconservation tool

During the open forum period all comments were po

Chairman sent email in support of twice weekly wate


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Have You Engaged Landscape I nNeed Feedback f rom Stakeholder

Staff spoke at the Metroplex Mayors meeting o

Dallas met with customer cities and sent letters

customer cities and stakeholder groups includin Citizens Council North Texas Commis

Dallas Regional Chamber Apartment Associatio

Greater Dallas Planning Council Homebuilders Assoc

Texas Municipal League Texas Real Estate Co

American Institute of Architects


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How Can We Encourage CustomeI mplement Tw ice Weekly Wateri

Dallas has had a good working relationship foyears with our customer cities

Both Dallas and the customer cities are requiwater conservation plans by the State

The contracts with customer cities require:

Customer shall cooperate by imposing conservatioupon its sales of Potable Treated Water to its end

Customer agrees to institute and maintain usage pensure water is used in a manner that prevents wawater resources for their most beneficial and vital protects the public health

Provide a List of Golf Courses Public a


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Provide a List of Golf Courses, Public aSource of Wat er, Locat ion and The PosTheir Conversion t o Non-pot able Wate

Dallas currently provides treated, untreated or rto 34 golf courses in the Dallas service area

There are 16 courses within the City of Dallas

Additionally, Dallas has untreated water contracts withoutside the City of Dallas

Treated, untreated and re-use water provided tby Dallas originate from the same sources and afor in Dallas permitted yield

Cedar Crest golf course currently utilizes direct (effluent from Dallas Central WWTP) and Stevecourse is scheduled to convert to direct reuse inof 2012

See following two slides for detailed listing of go


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Dallas Golf Courses

Bent Tree Country Club X X

Brookhollow Golf Club X X

Cedar Crest Golf Course X X Reuse- DWU Centra

Dallas Athletic Club X XDallas National X X

Keeton Park Golf Course X X

L.B. Houston Golf Course X X

Lakewood Country Club X X White Rock Lake

North Texas Golf Center X Elm Fork of the Trin

Northwood Club X X

Preston Trails Golf X X

Prestonwood Country Club X X

Royal Oaks Country Club X X

Stevens Park X convert to reuse in 2

Tenison Park X X

The Golf Club of Dallas X X

Potential for Con

potable

Untreated

Water

Treated

WaterDallas Golf Course

Dallas Untreated Water


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Dallas Untreated Water Course Contracts

Twin Creeks Golf Club * X Allen

Chase Oaks Golf - City of Allen * X Allen

City Of Carrollton- Indian Creek Golf Club * X Carrollton

City of Carrollton - McInnish Park * X CarrolltonRiverchase Golf Course * X Coppell

Tour 18 * X Flower Mound

Stonebriar Country Club * X Frisco

Plantation Golf Club * X Frisco

Eastern Hills Country Club * X Garland

Firewheel Golf Park - City of Garland * X Garland

Dallas Country Club * X Highland Park

Lantana Golf Club * X Lantana

Evergreen Alliance Golf - Lake Park Golf * X Lewisville

Canyon Creek Country Club * X Richardson

The Shores Country Club * X Rockwall

Waterview Dev. Inc. * X Rowlett

The Tribute Golf Club * X The Colony

Stewart Peninsula * X The Colony

*Treated water information not available

LocOutside City of Dallas (Untreated

Water Contract Accounts)

Treated

Water

Untreated

Water

What About An Opt ion of Three T


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pWeekly Watering and How WouldI mpact Consumpt ion?

Experts indicate that lawns only need one incper week

The Texas State Forestry Service says that foresults, Irrigate trees, shrubs, and other landsseparately from turf

The proposed ordinance amendment allows

with soaker hoses, by hand or drip irrigation o Comparison of 3x weekly to 2x weekly water

estimated savings from 6.8 BG to 2.3 BG


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Who Current ly Has Tw ice or ThreWeekly Watering?

A sampling of cities watering schedules follow

Note: Cities to the west may require more watering days due toclimates, and the cities above may be under more restrictive watedue to drought weather conditions or water supply limitations

Other: North Texas Municipal Water District has asked its customenact mandatory once weekly watering restrictions during the exis

Required Max 3x Weekly Required Max 2x Weekly

El Paso, TX McKinney, TX

Frisco, TX

Lower Colorado River Auth (west Tra

City of Austin, TX Commerical and MFamily

Provide Clari f icat ion on Foundat i


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Watering and I mpact s t o VegetaGardens

Foundations can be watered on any day with soakirrigation or handheld hoses or buckets

Experienced vegetable gardeners use soaker hose

irrigation or hand watering Spray irrigation increases the potential for pests a

many vegetable plants

Residents or community gardens who use drip irrihoses or hand watering will not require a variancewatering options are allowed any day

Because spray irrigation is not recommended, stafanticipate granting variances for vegetable gardentype of irrigation

Concern That Five Weeks is Not Enoug


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Concern That Five Weeks is Not EnougEst ablish New or Replaced LandscapesDid DWU Get t he Five Week Time Fram

Under the proposed ordinance amendment, thmandatory variance time. Each variance requereviewed individually and merits analyzed a l

frame could be merited based on the individuarequest.

Staff consulted with experts at Texas AgriLife EService (formerly Texas A&M Extension Service

watering requirements for new plantings in No AgriLife confirmed that a period of 5 weeks of more frequ

would establish new turf (seed or sod), which requires the

After the 5 week period, twice weekly watering would be sufficient for turf, trees, shrubs and perennials if watered

root zone

What I s the Current I mpact o


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What I s t he Current I mpact oDrillers?

Existing Council approved contract with Carrizo Oil &them to take a maximum of 80 million gallons annu0.05% of Dallas annual water usage

Gas drilling contracts require the purchaser to: Ensure water is used in a manner that prevents waste and

Comply with Dallas' water conservation and drought contingmeasures

Agree Dallas may restrict Purchaser's withdrawals of untreawater is needed for municipal purposes

No restrictions will be imposed on Purchaser unless imposed restrictions on other users

In the event withdrawals are restricted, untreated wallocated to Purchaser on a pro rata basis

A Th A O h I d i T


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Are There Any Other I ndust r ies TNot Return Water Aft er I t is Used

The USGS defines consumptive water as water that evaporated, transpired, incorporated into products or cconsumed by humans or livestock, or otherwise removimmediate water environment

Generally, only 60-70 percent of the water used is retutreatment, including residential use

A study by the USGS identified various levels of consuuse (percent water not returned) depends on the indu

Source: U.S. Geological Survey, Fact Sheet 20083032, April 2008

Selected Industries and consumptive-use coefficients Percent

Water bottlers 98

Hardwood, veneer, and plywood 67

Structural clay products 50

Lubricating oils and greases 50

Bottled and canned soft drinks 45

Wil l t he State Allow Us t o ChargeI d t i M D t th T


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I ndustries More Due to the Type Use?

Rates must be fair and equitable

Texas Water Code - Section 13.182. Just AndReasonable Rates

(a) The regulatory authority shall ensure trate made, demanded, or received by any by any two or more utilities jointly shall bereasonable

(b) Rates shall not be unreasonably preferprejudicial, or discriminatory but shall be sequitable, and consistent in application to of consumers

How Wil l Reduced Sales I mpact Rd th B d t d H Wil l DW


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and the Budget and How Wil l DWWit h That I ssue?

As indicated previously, it is anticipated that derevenues will be $15M lower, and expenditureslower ($10M net)

This scenario is much like what we deal with duwith much rainfall where revenues do not meet

To compensate during a rainy year, the utility wproject awards by $10M (i.e., slip to the next fis

To compensate for projects that must be awardthe revenue requirement is constant year to yerates will need to be adjusted by approximatelyO&M expenditures lowered by $10M


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Drought Conditions

Current Drought Conditio


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In August 2011, lakes were 82percent full (18 percent depleted)

In November 2011, lakes were 75percent full (25 percent depleted)

Recent rains have helped significantly

Lakes are currently 98 percent full(2 percent depleted), compared to

90 percent full this time last year

Dallas still faces treatment plantrestrictions this summer due toongoing infrastructure improvements

Current Drought Conditio

Lake Tawa

Current Drought Condit ions -St atus of Dallas Wat er Supply Reserv


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DALLAS

LAKE RAYHUBBARD

LAKETAWAKONI

LAKE PA

LEWISVILLELAKE

GRAPEVINELAKE

RAY ROBERTSLAKE

ELMFORKWTP

BACHMANWTP

EASTSIDEWTP

IRONBRIDGEPUMPSTATION

FORNEYPUMPSTATION

TAWAKONIBALANCINGRESERVOIR

INTAKE & PUMSTATION

GRAYSON

COLLIN

COOKE

DENTON

DALLAS

ELLIS

TARRANT

JOHNSON

KAUFMAN VAN ZANDT

HENDERSON

ROCKWALL

HUNT

HOPKINS

RAINS

WISE

Existing Water Treatment Plant

DWU Water Sources

Future Water Sources

Future Water Treatment Plant

LEGEND

Existing Facilities

Future Facilities

Existing Pipeline

Future Pipeline

FANNIN

HUNT

PROPOSEDDWU / TRWDINTEGRATED PIPELINE

CEDAR CREEKRESERVOIR

JOEPOOLLAKE

Other Reservoirs

LAKCHAP

NTMWD / IRVING PIPELINE

St atus of Dallas Wat er Supply Reserv

Down 0 ft.0% Depleted

Down 0.5 ft.

2% Depleted

Down 0 ft.

0% Depleted

Down 0 ft.

0% Depleted

Down 0 ft.0% Depleted

Data a

Water Use and 2012 Water Syste


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750

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4/8

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1 0 / 2 1

MGD

FY11 85% Available Treatment Capacity Treatment Capacity Dur ing Construction P

Restriction

Note: Graph shows treatment plant restriction; FY11 water use for year and the projected impact of 2 x weekly watering policy on watedemands.


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Bibliography of Council Bri

August 2011

Requested customers to voluntarily water no more than twice w

Briefed Council on Water Operations Plan

November 2011

Briefed Council on Long Range Water Supply Plan LRWSP Briefed Council on Approach to Water Conservation

Briefed Council on Drought Update

December 2011

City entered Stage 1 Drought Contingency Plan with mandatoryweekly watering

February 2012

Briefed Council on Drought Update

Briefed Budget, Finance & Audit Committee on Retail Rate Stru

Briefed Council on Retail Rate Structure

March 2012

Council briefed on Water Conservation and the Land Developm


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