Water quality in Mount Lemmon, Arizona
Mount Lemmon 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 |
|---|---|---|---|---|
| CS los Cerros Water Company INC Catalina |
2,613 | 1 | 8.1 mi | |
| Coronado Forest Drive Water Coop Catalina |
34 | 3 | 8.5 mi | |
| Orchard Valley Mobile Home Park Catalina |
130 | 3 | 8.6 mi | |
| Catalina Country Estates Tucson |
77 | 1 | 9.4 mi | |
| GW Ocotillo Water Catalina Catalina |
1,102 | 0 | 9.7 mi | |
| Oro Valley Water Utility Oro Valley |
42,316 | 0 | 11.8 mi | |
| Metropolitan Dwid Hub Tucson |
4,252 | 1 | 12.3 mi | |
| LA Cholla Airpark Tucson |
250 | 2 | 13.6 mi | |
| Samalayuca Improvement Assoc Tucson |
150 | 1 | 14.3 mi | |
| Mesaland Water Company Tucson |
294 | 5 | 14.5 mi | |
| Cammies Foothills Vista MHC Tucson |
62 | 1 | 14.7 mi | |
| Rio Vista Mobile Home Park Tucson |
217 | 0 | 15.0 mi | |
| Mission Palms Apartments Tucson |
720 | 1 | 15.2 mi | |
| Far Horizons MHP Tucson |
258 | 0 | 15.2 mi | |
| Crossroads Park MHP Tucson |
100 | 1 | 15.2 mi | |
| Far Horizons East MHP Tucson |
870 | 0 | 15.2 mi | |
| Winterhaven Water Development Tucson |
685 | 0 | 15.4 mi | |
| Casitas de Castilian Tucson |
167 | 5 | 15.4 mi | |
| Vista del Norte MHP Tucson |
554 | 0 | 15.5 mi | |
| Campbell Estates MHP Tucson |
450 | 1 | 15.5 mi | |
| Metropolitan Dwid Tucson |
45,570 | 4 | 15.6 mi | |
| Catalina Village Tucson |
107 | 3 | 15.9 mi | |
| Halcyon Acres Water Users Association Tucson |
215 | 1 | 15.9 mi | |
| Halcyon Acres 2 Tucson |
144 | 0 | 16.5 mi | |
| North la Cholla MHP Tucson |
150 | 0 | 17.3 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 Mount Lemmon 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.