Municipal Water Quality and Your Health Public Health Seminar Series February 3, 2004 UA,Southwest Environmental Health Sciences Center Pima County Health.

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Presentation transcript:

Municipal Water Quality and Your Health Public Health Seminar Series February 3, 2004 UA,Southwest Environmental Health Sciences Center Pima County Health Department City of Tucson Water Department

Tucson Water Supply & Delivery System Mtns. Avra Valley AquiferTucson Basin Aquifer Tucson Basin Wellfields Wastewater Treatment Plant Avra Valley Wellfield CRW Recharge Water Treatment Plant Reclaimed Water Production Facilities Recharge and Recovery. Groundwater

Potable System Overview

Safe Drinking Water? Clean Water Act Safe Drinking Water Act

Clean Water Act Passed 1972 SURFACE WATER Quality Purpose: “fishable, swimmable” water DRINKING WATER Quality Indirect protection of quality

Safe Drinking Water Act Originally signed into law in 1974 Authorizes EPA and states to set drinking water standards (regulations) Protect drinking water supply from contamination Limit contaminant levels in drinking water

Ground Water Test Requirements   Coliform Bacteria (2)   Inorganic Chemicals(15)   Lead & Copper(2)   Radiochemicals (3) plus Uranium starting 2004   Synthetic Chemicals (30) Volatile Chemicals (21)   Disinfection By- Products Trihalomethanes (4) plus Haloacetic Acids (5) and Disinfectant Residuals starting 2004   Unregulated Contaminants (11)

ACUTE Nitrate & Fecal Coliform How Fast Might These Contaminants Affect You? Over 90 standards Chronic All the rest (calculated lifetime risk) 2 “ACUTE” REST “CHRONIC”

Reported Sodium < Fluoride < <10 Protecting Public Health To meet regulatory requirements Tucson Water sampled, analyzed, and reported:   16,599 drinking water results in 2001 Analyzed Sampled    4200 drinking water results in 2002 and 2003    16, ,000 drinking water results in 2004 (anticipated)

EPA & Tucson Water Sponsor EMPACT - Water Quality Information Program “Environmental Monitoring for Public Access and Community Tracking”

What’s the Quality of Our Drinking Water? Community asks for information:   Sodium   Hardness   Mineral content (TDS)   pH   Chlorine  Coliform Bacteria  Contamination

Expanding the Program   Nitrate as nitrogen   Fluoride   Trihalomethanes   Temperature EMPACT also Reports on

Pima County Health Department Bacterias –Cryptosoridium reported cs 1-2 per year –Giardia reported cs 45 per year –Legionella reported cs 3 per year –Fecal coliforms

Pima County Health Department Immediate notification by media, posted signs Diamond Bell, Mercury, and health departments role html#mcls

Near Real Time Water Quality Information

What is Tucson's Water Quality?

What is My Water Quality?

Live Example coep/water/index.html

Contact Info SWEHSC –Marti Lindsey, , Pima County Health Department –Babs Johnson, , Tucson Water –Fernando Molina, x1469 –Dan Quintanar, x1372

Any Questions?