MT0003374 · Montana
HIDDEN LAKE YELLOWSTONE COUNTY W AND S D
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 24
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 24
Counties listed by EPA · Yellowstone County, Montana
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 23 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 1,095 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 5579150 · Groundwater Rule · Ground Water RuleNoncompliance period start May 1, 2026 · period end May 31, 2026 · first reported August 24, 2026 · EPA return-to-compliance field May 31, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208490 June 19, 2026 Informal State Violation/Reminder Notice 5208491 June 19, 2026 Informal State Public Notification requested 5208493 July 6, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 5579149 · Groundwater Rule · Ground Water RuleNoncompliance period start November 1, 2023 · period end January 3, 2023 · first reported February 15, 2024 · EPA return-to-compliance field January 3, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208489 January 3, 2023 Resolving State Compliance achieved 5208486 December 27, 2023 Informal State Violation/Reminder Notice 5208487 December 27, 2023 Informal State Public Notification requested 5208488 January 9, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 5579126 · Groundwater Rule · Ground Water RuleNoncompliance period start August 1, 2021 · period end August 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field August 31, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208459 September 15, 2021 Informal State Violation/Reminder Notice 5208460 September 15, 2021 Informal State Public Notification requested 5208461 September 23, 2021 Informal State Public Notification received 5208462 September 23, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579147 · Styrene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579146 · Ethylbenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579145 · Toluene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579144 · Benzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579143 · CHLOROBENZENE · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579142 · Tetrachloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579141 · 1,1,2-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579140 · Trichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579139 · 1,2-Dichloropropane · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579138 · Carbon tetrachloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579137 · 1,1,1-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579136 · 1,2-Dichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579135 · trans-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579134 · 1,1-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579133 · Vinyl chloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579132 · p-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579131 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579130 · DICHLOROMETHANE · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579129 · Xylenes, Total · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579128 · cis-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 5579127 · 1,2,4-Trichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022
19 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5208463 January 29, 2023 Informal State Violation/Reminder Notice 5208464 January 29, 2023 Informal State Public Notification requested 5208466 January 29, 2023 Informal State Violation/Reminder Notice 5208467 January 29, 2023 Informal State Public Notification requested 5208469 January 29, 2023 Informal State Violation/Reminder Notice 5208470 January 29, 2023 Informal State Public Notification requested 5208472 January 29, 2023 Informal State Violation/Reminder Notice 5208473 January 29, 2023 Informal State Public Notification requested 5208475 January 29, 2023 Informal State Violation/Reminder Notice 5208476 January 29, 2023 Informal State Public Notification requested 5208478 January 29, 2023 Informal State Violation/Reminder Notice 5208479 January 29, 2023 Informal State Public Notification requested 5208481 February 7, 2023 Informal State Public Notification received 5208465 February 16, 2023 Resolving State Compliance achieved 5208468 February 16, 2023 Resolving State Compliance achieved 5208471 February 16, 2023 Resolving State Compliance achieved 5208474 February 16, 2023 Resolving State Compliance achieved 5208477 February 16, 2023 Resolving State Compliance achieved 5208480 February 16, 2023 Resolving State Compliance achieved
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
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