Yuma County Water Quality
Arizona
According to EPA SDWIS, Yuma County, Arizona hosts 23 community water systems covering about 206,039 people. The same extract lists 414 health-based violation records across 18 systems. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Yuma County, Arizona hosts 23 EPA-regulated community water systems delivering drinking water to approximately 206,039 people. Each system is catalogued in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which mandates monitoring for dozens of regulated contaminants, public notification when standards are exceeded, and the issuance of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 414 violation records across these active community systems, with 18 systems carrying at least one record. The extract excludes monitoring and reporting violations. The county contains 4 incorporated places where these systems deliver service. 1 Superfund site is also listed within the county.
A historical health-based registry row does not establish water delivered today or describe current compliance. For current conditions, request the utility's most recent Consumer Confidence Report or contact the Arizona drinking water program. Figures shown here reflect only the health-based subset fetched from federal EPA SDWIS.
What water systems serve Yuma County?
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| CITY OF YUMA | 103,264 | 46 | Health |
| SAN LUIS CITY OF | 39,705 | 4 | Health |
| FOOTHILLS WATER AND SEWER LLC | 32,425 | 3 | Health |
| SOMERTON CITY OF | 14,197 | 0 | Clean |
| ASPC YUMA | 4,197 | 2 | Health |
| WELLTON TOWN OF | 3,000 | 149 | Health |
| FOOTHILLS UTILITIES KINGMAN EAST | 2,538 | 26 | Health |
| HOWARD CANTONMENT AREA | 1,500 | 0 | Clean |
| Cocopah Bend RV & Golf Resort | 1,095 | 13 | Health |
| SIERRA PACIFIC MOBILE MANOR | 816 | 48 | Health |
| FOOTHILLS UTILITIES KINGMAN WEST | 653 | 0 | Clean |
| TACNA WATER IMPROVEMENT DISTRICT | 500 | 0 | Clean |
| SHEPARD WATER COMPANY | 430 | 24 | Health |
| FISHERS LANDING RESORT | 402 | 7 | Health |
| Cocopah West | 325 | 2 | Health |
| Cocopah East | 280 | 0 | Clean |
| LOST TRAVELER RV PARK | 200 | 13 | Health |
| SUN LEISURE ESTATES IMPROVEMENT DISTRICT | 143 | 35 | Health |
| ROOSEVELT RESORT LLC | 139 | 2 | Health |
| SPIRIT LAKE INDUSTRIAL PARK | 90 | 1 | Health |
| MOUNTAIN VIEW MOBILE VILLAGE | 75 | 8 | Health |
| JONES COOP WATER ASSOC | 35 | 27 | Health |
| YUMA WEST MHP | 30 | 4 | Health |
Cities in Yuma County
How does Yuma County compare in Arizona?
Of the 15 Arizona counties with at least one community water system on file, Yuma County ranks #11 by number of systems (23).
Either side of it: Mohave County (39), Cochise County (32), La Paz County (12), Santa Cruz County (9)
What are Yuma County's health-based records for?
Yuma County's health-based violation records carry 8 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results, and a historical record does not establish present water quality.
| Contaminant | Records | Systems |
|---|---|---|
| Arsenic | 112 | 4 |
| Tthm | 96 | 2 |
| Chlorine dioxide | 44 | 1 |
| Combined Uranium | 35 | 1 |
| Interim Enhanced Surface Water Treatment Rule | 34 | 2 |
| Groundwater Rule | 33 | 8 |
| Carbon, Total | 29 | 2 |
| Revised Total Coliform Rule | 18 | 4 |
Superfund Sites in Yuma County
| Site Name | NPL Status | Site Score |
|---|---|---|
| Yuma Marine Corps Air Station | NPL Site | 32.24 |
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
Figures here are the current EPA SDWIS extract joined to the 23 community water systems whose service area falls in Yuma County, ranked against the 15 Arizona counties with at least one system on file. Data current as of 2026-08-25. Editorial standards, methodology, report an error.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
Read our methodology - how this data is sourced, computed, and verified.