1. 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

2. 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

3. Potable System Overview

4. Safe Drinking Water? Clean Water Act Safe Drinking Water Act

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

6. 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

7. 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)

8. 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”

9. Reported Sodium <0.0009 Fluoride <0.0245 <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 - 17,000 drinking water results in 2004 (anticipated)

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

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

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

13. 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

14. Pima County Health Department Immediate notification by media, posted signs Diamond Bell, Mercury, and health departments role http://www.epa.gov/safewater/mcl. html#mcls

15. Near Real Time Water Quality Information

16. What is Tucson's Water Quality? http://www.ci.tucson.az.us/cw/viewer.htm?Title=City%20Water

17. What is My Water Quality? http://www.ci.tucson.az.us/mw/viewer.htm?Title=MyWater

18. Live Example http://swehsc.pharmacy.arizona.edu/ coep/water/index.html

19. Contact Info SWEHSC –Marti Lindsey, 626-4468, lindsey@pharmacy.arizona.edu Pima County Health Department –Babs Johnson, 740-8315, babsj@pimahealth.org Tucson Water –Fernando Molina, 791-5080 x1469 –Dan Quintanar, 791-5080 x1372

20. Any Questions?