MA4020004 · Massachusetts
HYANNIS WATER SYSTEM, TOWN OF BARNSTABLE
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 2
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 2
Counties listed by EPA · Barnstable County, Massachusetts
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 56 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported September 24, 2026 · EPA return-to-compliance field June 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 40 June 9, 2025 Formal State Administrative/Compliance Order without penalty issued Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 55 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported September 24, 2026 · EPA return-to-compliance field June 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 40 June 9, 2025 Formal State Administrative/Compliance Order without penalty issued
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