WA5304643 · Washington

Sierra Water System

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 40
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 40

Counties listed by EPA · Pierce County, Washington

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, RegularViolation 25754522959 · Chlordane · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522306 · Benzo(a)pyrene · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522274 · HEXACHLOROBENZENE · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522067 · Heptachlor epoxide · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522065 · Heptachlor · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522051 · LASSO · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522050 · Atrazine · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522042 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522039 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522037 · Simazine · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522035 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522020 · Toxaphene · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522015 · Methoxychlor · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522010 · BHC-GAMMA · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25754522005 · Endrin · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752532326 · Pentachlorophenol · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752532110 · 2,4,5-TP · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752532041 · Dinoseb · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752532040 · Picloram · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752532031 · Dalapon · Synthetic Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522996 · Styrene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522992 · Ethylbenzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522991 · Toluene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522990 · Benzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522989 · CHLOROBENZENE · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522987 · Tetrachloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522985 · 1,1,2-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522984 · Trichloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522983 · 1,2-Dichloropropane · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522982 · Carbon tetrachloride · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522981 · 1,1,1-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522980 · 1,2-Dichloroethane · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522979 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522977 · 1,1-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522976 · Vinyl chloride · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522969 · p-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522968 · o-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522964 · DICHLOROMETHANE · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522380 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25752522378 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.

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