Water quality in Tucson, Arizona
Tucson is in Pima County. 193 active public water systems serve the county; 127 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Pima County
141 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Sierra Court MHC LLC Tucson |
52 | 2 | 1.9 mi | |
| Rio Viejo Water Tucson |
272 | 2 | 2.7 mi | |
| Via Verde West MHP Tucson |
156 | 1 | 4.1 mi | |
| Ranchwood Community Tucson |
225 | 2 | 4.3 mi | |
| Ray Water Company INC Tucson |
4,495 | 2 | 4.8 mi | |
| Desert Shores RV MHP Tucson |
220 | 2 | 4.9 mi | |
| Crescent Manor MHP Tucson |
200 | 1 | 6.0 mi | |
| Winterhaven Water Development Tucson |
685 | 0 | 6.0 mi | |
| Flowing Wells Irrigation District Tucson |
16,000 | 6 | 6.3 mi | |
| Campbell Estates MHP Tucson |
450 | 1 | 6.3 mi | |
| Rio Vista Mobile Home Park Tucson |
217 | 0 | 6.4 mi | |
| Catalina Village Tucson |
107 | 3 | 6.4 mi | |
| Crossroads Park MHP Tucson |
100 | 1 | 6.5 mi | |
| Far Horizons MHP Tucson |
258 | 0 | 6.6 mi | |
| Town & Country Estates Tucson |
960 | 2 | 6.6 mi | |
| Rio Mercado Water Tucson |
266 | 5 | 6.6 mi | |
| Riverside Apartments Tucson |
75 | 3 | 6.6 mi | |
| Thim Utility Company Parkin Tucson |
69 | 2 | 6.6 mi | |
| Cammies Foothills Vista MHC Tucson |
62 | 1 | 6.6 mi | |
| Vista del Norte MHP Tucson |
554 | 0 | 6.7 mi | |
| Usaf Davis Monthan Afb Tucson |
18,640 | 3 | 7.2 mi | |
| Bella Capri MHP Tucson |
342 | 2 | 7.5 mi | |
| Silver Cholla LLC Tucson |
168 | 0 | 7.8 mi | |
| North la Cholla MHP Tucson |
150 | 0 | 7.9 mi | |
| Lazy C Water Service Tucson |
359 | 2 | 7.9 mi |
Non-community systems in Pima County (51: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Pima County, nearest to Tucson first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Arizona records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.