Arizona
Yuma County drinking water quality
50 active public water systems serve 219,452 people in Yuma County. 4 are compliant, 46 had at least one EPA violation in the past three years, 4 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
29 systems, largest firstNon-community systems (21: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Adot Mohawk RA Mohawk |
900 | 1 | 0 | |
|
Walker Cantonment Area Yuma |
888 | 1 | 0 | |
|
Yuma Lakes Resort Yuma |
652 | 3 | 0 | |
|
Del Pueblo RV Park Tennis Resort Yuma |
600 | 2 | 1 | |
|
Orange Grove Elementary School Somerton |
425 | 3 | 0 | |
|
Yuma Regional Medical Center Yuma |
400 | 1 | 0 | |
|
Kofa Cantonment Area Yuma |
390 | 0 | 0 | |
|
Gowan Milling LLC Yuma |
350 | 7 | 1 | |
|
Hidden Shores RV Village Imperial Dam |
324 | 3 | 0 | |
|
Blue Sky RV Park Yuma |
300 | 2 | 0 | |
|
Kofa Co-Op Yuma |
300 | 2 | 0 | |
|
Antelope Union High School Yuma |
250 | 8 | 0 | |
|
Rancho Bonito RV Park Yuma |
200 | 2 | 0 | |
|
Yuma Desalting Project Yuma |
200 | 0 | 0 | |
|
Mohawk Valley School District Roll |
171 | 7 | 0 | |
|
Dateland Elementary School Dateland |
160 | 4 | 0 | |
|
Ligurta Stat Restaurant Ligurta |
150 | 2 | 0 | |
|
Dateland Travel Center Dateland |
135 | 1 | 0 | |
|
Usmc Air Station Cannon Complex Yuma |
100 | 3 | 0 | |
|
Aps Yucca Water Yuma |
27 | 1 | 0 | |
|
Tacna Travel Center Tacna |
25 | 0 | 0 |
Inactive systems (90, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.