Maricopa Water Quality
Arizona
The tap water in Maricopa, Arizona is served by 40 EPA-regulated water systems covering approximately 128,679 people. 501 health-based violations are on record, most recently for 8000 in 2025. Data source: EPA Safe Drinking Water Information System.
Drinking water in Maricopa, Arizona is delivered through 40 EPA-regulated community water systems serving an estimated 128,679 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Maricopa shows 501 total violations across all 40 systems, of which 501 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 8000, 1040, 0700, 5200, 1005 and 5 others. 2 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Arizona drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| GW SANTA CRUZ WATER CO | 84,000 | 1 | Health |
| Ak-Chin Village | 11,646 | 3 | Health |
| GW FARMERS WATER CO - CONTINENTAL | 5,592 | 0 | Clean |
| GW FARMERS WATER CO - SANTA RITA SPRINGS | 3,990 | 0 | Clean |
| GW SANTA CRUZ WATER CO - RED ROCK | 3,813 | 0 | Clean |
| GW SAGUARO DIST WATER CO - LAS QUINTAS | 3,720 | 0 | Clean |
| GW OCOTILLO WATER - RANCHO DEL SOL LINDO | 3,128 | 0 | Clean |
| THUNDERBIRD FARMS DWID | 2,231 | 58 | Health |
| GW SANTA CRUZ WATER - MARICOPA SW | 1,170 | 0 | Clean |
| GW OCOTILLO WATER - CATALINA | 1,168 | 0 | Clean |
| MARICOPA CONSOLIDATED DWID | 928 | 10 | Health |
| GW OCOTILLO WATER - DIAMOND BELL | 706 | 0 | Clean |
| GW -BWC, INC- SUNSHINE | 604 | 8 | Health |
| PAPAGO BUTTE DWID | 530 | 141 | Health |
| GW OCOTILLO WATER - VALLEY VIEW ACRES | 496 | 0 | Clean |
| GW FARMERS WATER CO - SAHUARITA | 492 | 0 | Clean |
| GW FARMERS WATER CO - SAHUARITA HIGHLAND | 492 | 3 | Health |
| MARICOPA MOUNTAIN DWID 1 | 450 | 52 | Health |
| GW -BWC, INC- BUCKEYE RANCH | 422 | 0 | Clean |
| VALLE ESCONDIDO | 405 | 14 | Health |
| GW -BWC, INC.- NSWC | 319 | 0 | Clean |
| GW -BWC, INC- EAGLETAIL | 288 | 0 | Clean |
| GW OCOTILLO WATER - SILVERBELL WEST | 263 | 0 | Clean |
| GW SAGUARO DIST WATER CO - TALA WAY | 255 | 0 | Clean |
| GW SAGUARO DIST WATER CO - MIRABELL | 180 | 0 | Clean |
| GW OCOTILLO WATER - THUNDERHEAD | 174 | 0 | Clean |
| ANTELOPE PEAK DWID | 150 | 130 | Health |
| GW- BWC, INC- DIXIE | 132 | 0 | Clean |
| MARICOPA MOUNTAIN DWID 2 | 120 | 0 | Clean |
| GW SAGUARO DIST WATER CO - LYN LEE | 114 | 0 | Clean |
| GW SAGUARO DIST WATER CO - AMBER ANN | 108 | 0 | Clean |
| NEW SADDLEBACK VISTA | 100 | 74 | Health |
| GW OCOTILLO WATER - SIERRITA FOOTHILLS | 84 | 0 | Clean |
| GW -BWC, INC.- WPE #6 | 69 | 0 | Clean |
| GW SAGUARO DIST WATER CO - TORTOLITA | 69 | 0 | Clean |
| GW- BWC, INC- ROSEVIEW | 66 | 0 | Clean |
| AMERICAN REALTY MORTGAGE COMPANY | 60 | 7 | Health |
| GW SANTA CRUZ WATER -TWIN HAWKS WATER | 57 | 0 | Clean |
| GW- BWC, INC- GARDEN CITY | 51 | 0 | Clean |
| GW SANTA CRUZ WATER - CP WATER CO | 37 | 0 | Clean |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 8000 | 2025-08-01 |
| 1040 | 2025-07-01 |
| 1040 | 2025-07-01 |
| 1040 | 2025-04-01 |
| 1040 | 2025-04-01 |
| 1040 | 2025-04-01 |
| 1040 | 2025-01-01 |
| 1040 | 2025-01-01 |
| 1040 | 2025-01-01 |
| 1040 | 2025-01-01 |
| 1040 | 2025-01-01 |
| 1040 | 2025-01-01 |
| 0700 | 2024-11-02 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 1040 | 2024-10-01 |
| 1040 | 2024-10-01 |
| 1040 | 2024-07-01 |
| 1040 | 2024-07-01 |
| 1040 | 2024-07-01 |
| 1040 | 2024-07-01 |
| 1040 | 2024-07-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1005 | 2024-01-01 |
| 1005 | 2024-01-01 |
| 1005 | 2024-01-01 |
| 1005 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1005 | 2023-10-01 |
| 1005 | 2023-10-01 |
| 1005 | 2023-10-01 |
| 1005 | 2023-10-01 |
TRI Facilities in Maricopa
| Facility | Total Releases |
|---|---|
| Pinal Energy LLC | 1 lbs |
| Calportland Maricopa Plant | 0 lbs |
Frequently Asked Questions
Is Maricopa, Arizona water safe to drink? ▼
How many water violations does Maricopa have? ▼
What contaminants were found in Maricopa water? ▼
How many water systems serve Maricopa? ▼
Where does Maricopa get its drinking water? ▼
Are there pollution sources near Maricopa? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.