Water quality report for Crow Agency, MT — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.
A look at Crow Agency's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.
Lead is 1.00 ppb, 7% of the action level. PFAS has never been sampled at this system.
Graded on violations and lead, with state inspection findings. PFAS not tested.
| Contaminant | Type | Measured | Limit | Period | Status |
|---|---|---|---|---|---|
| Groundwater Rule | TREATMENT TECHNIQUE | — | — | 2025 | Unaddressed |
| Interim Enhanced Surface Water Treatment Rule | OTHER | — | — | 2025 | Unaddressed |
| Groundwater Rule | TREATMENT TECHNIQUE | — | — | 2025 | Unaddressed |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2025 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2025 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2025 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2025 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2024 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2024 | Resolved |
| Consumer Confidence Rule | OTHER | — | — | 2023 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2023 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2023 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2023 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2023 | Resolved |
| 1,2,4-Trichlorobenzene | MONITORING AND REPORTING | — | 0.07 mg/L | 2023 | Resolved |
| cis-1,2-Dichloroethylene | MONITORING AND REPORTING | — | 0.07 mg/L | 2023 | Resolved |
| Xylenes, Total | MONITORING AND REPORTING | — | 10 mg/L | 2023 | Resolved |
| DICHLOROMETHANE | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| o-Dichlorobenzene | MONITORING AND REPORTING | — | 0.6 mg/L | 2023 | Resolved |
| p-Dichlorobenzene | MONITORING AND REPORTING | — | 0.075 mg/L | 2023 | Resolved |
| Vinyl chloride | MONITORING AND REPORTING | — | 0.002 mg/L | 2023 | Resolved |
| 1,1-Dichloroethylene | MONITORING AND REPORTING | — | 0.007 mg/L | 2023 | Resolved |
| trans-1,2-Dichloroethylene | MONITORING AND REPORTING | — | 0.1 mg/L | 2023 | Resolved |
| 1,2-Dichloroethane | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| 1,1,1-Trichloroethane | MONITORING AND REPORTING | — | 0.2 mg/L | 2023 | Resolved |
| Carbon tetrachloride | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| 1,2-Dichloropropane | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| Trichloroethylene | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| 1,1,2-Trichloroethane | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| Tetrachloroethylene | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| CHLOROBENZENE | MONITORING AND REPORTING | — | 0.1 mg/L | 2023 | Resolved |
| Benzene | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| Toluene | MONITORING AND REPORTING | — | 1 mg/L | 2023 | Resolved |
| Ethylbenzene | MONITORING AND REPORTING | — | 0.7 mg/L | 2023 | Resolved |
| Styrene | MONITORING AND REPORTING | — | 0.1 mg/L | 2023 | Resolved |
| Mercury | MONITORING AND REPORTING | — | 0.002 mg/L | 2023 | Resolved |
| Antimony, Total | MONITORING AND REPORTING | — | 0.006 mg/L | 2023 | Resolved |
| Selenium | MONITORING AND REPORTING | — | 0.05 mg/L | 2023 | Resolved |
| Thallium, Total | MONITORING AND REPORTING | — | 0.002 mg/L | 2023 | Resolved |
| Cadmium | MONITORING AND REPORTING | — | 0.005 mg/L | 2023 | Resolved |
| Arsenic | MONITORING AND REPORTING | — | 0.010 mg/L | 2023 | Resolved |
| Beryllium, Total | MONITORING AND REPORTING | — | 0.004 mg/L | 2023 | Resolved |
| CYANIDE | MONITORING AND REPORTING | — | 0.2 mg/L | 2023 | Resolved |
| Barium | MONITORING AND REPORTING | — | 2 mg/L | 2023 | Resolved |
| Nickel | MONITORING AND REPORTING | — | — | 2023 | Resolved |
| Chromium | MONITORING AND REPORTING | — | 0.1 mg/L | 2023 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2022 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2022 | Resolved |
| Lead and Copper Rule | MONITORING AND REPORTING | — | TT | 2021 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2020 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | — | TT | 2020 | Resolved |
| CARBON, TOTAL | TREATMENT TECHNIQUE | 0.92 RATIO | TT | 2019 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2018 | Archived |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2017 | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | TREATMENT TECHNIQUE | — | — | 2017 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2017 | Archived |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2017 | Archived |
| Interim Enhanced Surface Water Treatment Rule | OTHER | — | — | 2016 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2016 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2016 | Resolved |
| Interim Enhanced Surface Water Treatment Rule | MONITORING AND REPORTING | — | — | 2016 | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | TREATMENT TECHNIQUE | — | — | 2015 | Resolved |
| CARBON, TOTAL | MONITORING AND REPORTING | — | TT | 2015 | Resolved |