MT0004072 · Montana
HARTLAND COLONY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 37
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 1
- Monitoring and reporting records
- 36
Counties listed by EPA · Blaine 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 36 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.
EPA health-based flag · Unaddressed by formal action
Maximum Contaminant Level Violation, AverageViolation 2565 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2026 · period end September 30, 2026 · first reported September 24, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3768 September 4, 2026 Informal State Violation/Reminder Notice 3769 September 4, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, RegularViolation 2564 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3765 January 24, 2026 Informal State Violation/Reminder Notice 3766 January 24, 2026 Informal State Public Notification requested 3767 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2563 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3762 January 23, 2026 Informal State Violation/Reminder Notice 3763 January 23, 2026 Informal State Public Notification requested 3764 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2562 · Chlordane · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2561 · Pentachlorophenol · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2560 · Benzo(a)pyrene · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2559 · HEXACHLOROBENZENE · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2558 · 2,4,5-TP · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2557 · 2,4-D · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2556 · Heptachlor epoxide · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2555 · Heptachlor · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2554 · LASSO · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2553 · Atrazine · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2552 · Carbofuran · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2551 · Hexachlorocyclopentadiene · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2550 · Dinoseb · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2549 · Picloram · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2548 · Di(2-ethylhexyl) phthalate · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2547 · Simazine · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2546 · OXAMYL · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2545 · Di(2-ethylhexyl) adipate · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2544 · Dalapon · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2543 · Toxaphene · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2542 · Methoxychlor · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2541 · BHC-GAMMA · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2540 · Endrin · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3759 January 23, 2026 Informal State Violation/Reminder Notice 3760 January 23, 2026 Informal State Public Notification requested 3761 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2539 · Selenium · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2538 · Thallium, Total · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2537 · Beryllium, Total · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2536 · Antimony, Total · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2535 · Nickel · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2534 · Mercury · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2533 · Fluoride · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2532 · Chromium · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2531 · Cadmium · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2530 · Barium · Inorganic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 25, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3756 January 22, 2026 Informal State Violation/Reminder Notice 3757 January 22, 2026 Informal State Public Notification requested 3758 January 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 2527 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 30, 2021 · period end January 8, 2022 · first reported September 22, 2023 · EPA return-to-compliance field January 8, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3751 January 4, 2022 Informal State Violation/Reminder Notice 3752 January 8, 2022 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.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility