Water quality in Duncan, Arizona
Duncan is in Greenlee County. 11 active public water systems serve the county; 11 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 Greenlee County
6 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Valley View MHC & RV Park Duncan |
142 | 5 | 0.5 mi | |
| Duncan Town of Duncan |
605 | 6 | 0.7 mi | |
| CS Loma Linda Water Company Clifton |
351 | 6 | 20.2 mi | |
| CS Verde Lee Water Company Clifton |
604 | 5 | 20.9 mi | |
| Morenci Water Elec CO Clifton Clifton |
1,680 | 2 | 24.7 mi | |
| Morenci Water Elec CO Main Morenci |
4,078 | 5 | 24.7 mi |
Non-community systems in Greenlee County (4: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Duncan Elementary School Duncan |
450 | 4 | 1 | |
|
Greenlee Country Club York |
45 | 2 | 0 | |
|
Hannagan Meadows Lodge Alpine |
40 | 3 | 0 | |
|
Usfs Asnf Hannagan Meadow Hannagan Meadow |
25 | 2 | 0 |
About this data
Water systems are matched to Greenlee County, nearest to Duncan 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.