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UNDERSTANDING THE CONCEPT

OF DRINKING WATER SAFETY

Re-DEFINING SOCIAL

RESPONSIBILITY & PUBLIC

HEALTH AWARENESS

METROPOLITAN CEBU WATERDISTRICT

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What is water?

An ubiquitous chemicalsubstance that is vital to allforms of life on earth

Major physical & chemical

properties: Tasteless, odorless, colorless

liquid at STP

Known as the universal

solvent Only clean, fresh drinking

water is essential for humanconsumption

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Water is Life!

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PHILIPPINE NATIONALSTANDARDS for

DRINKING WATER2007 ( Revised Edition )

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Objective

To protect public health, safety andwelfare by ensuring quality standards

of drinking water.

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SCOPE of COVERAGE

Waterworks officials, developers and operators of watersupply system both government and private entities

Water refilling stations, water vending machines, ice

manufacturers All establishments and institutions that supply or serve

drinking water;

Drinking water laboratories, health and sanitation

authorities; other concerned institutions

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Regulatory Requirements

Physical / Chemical

Radiological

Microbiological

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Know Thy Enemy

( Water-Related Diseases)

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Physical-Chemical

Arsenic poisoning Mercury poisoning

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Pesticides poisoning

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MICROBIOLOGICAL

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Water-washed Diseases

related to poor hygienehabits and sanitation,lack of adequate water

for washing andbathing,usually affect theeyes and skin

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Water-based Disease

pathogen spends anessential part of itslife in water and is

dependent uponaquatic organism forthe completion of itslife cycle. Ex.

schistosomiasis

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Water-vectored Disease

Are transmitted byinsects that breed in the

water or bite near water

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Waterborne Disease

Are those transmittedthrough the ingestion ofcontaminated water

Can enter the body viathe fecal-oral route fromhuman to human oranimal to human

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NEMATODES

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Water Contamination

The Vicious Cycle

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Hydrologic Cycle

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FIREKAINGIN SYSTEM

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Wadding through a sea of plastic waste in the Philippines

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Contamination in Piped Water

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Cross-connections

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METROPOLITAN

CEBU WATERDISTRICT

W TER QU LITY CONTROLDIVISION

WQCD is responsible in maintaining safe

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WQCD is responsible in maintaining safe

and potable drinking water served by

MCWD to its concessionaires

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MCWD Water Quality Treatment Activity

for Groundwater

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Automatic Chlorine Gas Feeder

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MCWD Water Quality Treatment Activity forSurface Water

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Monitoring the

Distribution System&

Consumers Tap

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Indicator Organism

Total Coliform

The most numerousorganism in the intestinal

tract of warm-bloodedanimals

Originates from the samesource with enteric

pathogens

Fecal coliform

The indicator organismfor fecal contamination

Indicator organismEscherichia coli ( E.coli

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Water Quality Control Division

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..taking our social responsibility to heart.

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MCWD Water SafetyPlan

A World Health Organization

Project

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Multiple Barrier Principle

The failure of one barriermay be compensated byeffective operation of theremaining barriers

An approach to ensuring thesafety of drinking water thatencompasses all steps insupply from source toconsumer

Prevention of contaminationfrom the catchment to theconsumer.

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Once an aquifer has been polluted, it is

very difficult to bring it back to its original

purity; the pollutants which contaminated it

are not only present in the water but are

attached to and adsorbed on the rocks and

minerals in the substratum.

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