WA5306029 · Washington
YAK CO - TERRACE HEIGHTS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 25
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 24
Counties listed by EPA · Yakima 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
Among 25 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 2,191 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, RegularViolation 2588004 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3188004ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2588003 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3188003ENF March 27, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2587878 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3187878ENF March 27, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)Violation 3022081 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start August 1, 2023 · period end August 31, 2023 · first reported December 29, 2023 · EPA return-to-compliance field August 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3022081ENF September 18, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2871237 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 1, 2022 · period end October 31, 2022 · first reported March 31, 2023 · EPA return-to-compliance field October 31, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2871237ENF November 8, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582996 · Styrene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582992 · Ethylbenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582991 · Toluene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582990 · Benzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582989 · CHLOROBENZENE · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582987 · Tetrachloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582985 · 1,1,2-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582984 · Trichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582983 · 1,2-Dichloropropane · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582982 · Carbon tetrachloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582981 · 1,1,1-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582980 · 1,2-Dichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582979 · trans-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582977 · 1,1-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582976 · Vinyl chloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582969 · p-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582968 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582964 · DICHLOROMETHANE · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582380 · cis-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 25988582378 · 1,2,4-Trichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2025 · first reported March 26, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2498858ENF April 30, 2026 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