Water quality report for San Tan Valley, AZ — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.
A look at San Tan Valley's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.
Lead was not detected and no violations are open. No PFAS was detected.
Graded on violations, lead, and PFAS, with state inspection findings.
| Contaminant | Type | Measured | Limit | Period | Status |
|---|---|---|---|---|---|
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2026 | Archived |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2024 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2024 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2024 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2024 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2024 | Resolved |
| 1,2,4-Trichlorobenzene | MONITORING AND REPORTING | — | 0.07 mg/L | 2024 | Resolved |
| cis-1,2-Dichloroethylene | MONITORING AND REPORTING | — | 0.07 mg/L | 2024 | Resolved |
| Xylenes, Total | MONITORING AND REPORTING | — | 10 mg/L | 2024 | Resolved |
| DICHLOROMETHANE | MONITORING AND REPORTING | — | 0.005 mg/L | 2024 | Resolved |
| o-Dichlorobenzene | MONITORING AND REPORTING | — | 0.6 mg/L | 2024 | Resolved |
| p-Dichlorobenzene | MONITORING AND REPORTING | — | 0.075 mg/L | 2024 | Resolved |
| 1,1-Dichloroethylene | MONITORING AND REPORTING | — | 0.007 mg/L | 2024 | Resolved |
| trans-1,2-Dichloroethylene | MONITORING AND REPORTING | — | 0.1 mg/L | 2024 | Resolved |
| 1,2-Dichloroethane | MONITORING AND REPORTING | — | 0.005 mg/L | 2024 | Resolved |
| 1,1,1-Trichloroethane | MONITORING AND REPORTING | — | 0.2 mg/L | 2024 | Resolved |
| Carbon tetrachloride | MONITORING AND REPORTING | — | 0.005 mg/L | 2024 | Resolved |
| 1,2-Dichloropropane | MONITORING AND REPORTING | — | 0.005 mg/L | 2024 | Resolved |
| Trichloroethylene | MONITORING AND REPORTING | — | 0.005 mg/L | 2024 | Resolved |
| 1,1,2-Trichloroethane | MONITORING AND REPORTING | — | 0.005 mg/L | 2024 | Resolved |
| Tetrachloroethylene | MONITORING AND REPORTING | — | 0.005 mg/L | 2024 | Resolved |
| CHLOROBENZENE | MONITORING AND REPORTING | — | 0.1 mg/L | 2024 | Resolved |
| Benzene | MONITORING AND REPORTING | — | 0.005 mg/L | 2024 | Resolved |
| Toluene | MONITORING AND REPORTING | — | 1 mg/L | 2024 | Resolved |
| Ethylbenzene | MONITORING AND REPORTING | — | 0.7 mg/L | 2024 | Resolved |
| Styrene | MONITORING AND REPORTING | — | 0.1 mg/L | 2024 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2024 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2024 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2022 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2022 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2022 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2022 | Resolved |
| E. COLI | MONITORING AND REPORTING | — | 0 | 2020 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2019 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2019 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2019 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2019 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2019 | Resolved |
| TTHM | MONITORING AND REPORTING | — | 0.080 mg/L | 2018–2019 | Resolved |
| Total Haloacetic Acids (HAA5) | MONITORING AND REPORTING | — | 0.060 mg/L | 2018–2019 | Resolved |
| TTHM | MONITORING AND REPORTING | — | 0.080 mg/L | 2018 | Resolved |
| Total Haloacetic Acids (HAA5) | MONITORING AND REPORTING | — | 0.060 mg/L | 2018 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2018 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2018 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2018 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2018 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2018 | Resolved |
| Nitrate | MONITORING AND REPORTING | — | 10 mg/L | 2018 | Resolved |
| TTHM | MONITORING AND REPORTING | — | 0.080 mg/L | 2017 | Resolved |
| Total Haloacetic Acids (HAA5) | MONITORING AND REPORTING | — | 0.060 mg/L | 2017 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2017 | Resolved |
| Nitrate | MCL EXCEEDANCE | 12 MG/L | 10 mg/L | 2017 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2016 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2016 | Resolved |
| Nitrate | MCL EXCEEDANCE | 12 MG/L | 10 mg/L | 2016 | Resolved |
| Combined Radium (-226 and -228) | MONITORING AND REPORTING | — | 5 pCi/L | 2015 | Resolved |
| Chlorine | MONITORING AND REPORTING | — | 4.0 mg/L | 2015 | Resolved |
| E. COLI | MONITORING AND REPORTING | — | 0 | 2015 | Resolved |
| Coliform (TCR) | MONITORING AND REPORTING | — | 5% of samples | 2015 | Resolved |