WA5305067 · Washington
THUNDERBIRD TERRACE WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 5
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
Counties listed by EPA · Snohomish 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 5 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 3374548 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start November 1, 2025 · period end November 30, 2025 · first reported March 26, 2026 · EPA return-to-compliance field November 30, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3374548ENF December 31, 2025 Resolving State Compliance achieved 34769 January 29, 2026 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring, RegularViolation 2584724 · 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 3184724ENF April 19, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 3172914 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start June 1, 2024 · period end June 30, 2024 · first reported March 28, 2025 · EPA return-to-compliance field June 30, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3172914ENF July 31, 2024 Resolving State Compliance achieved 33972 December 30, 2024 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 2884485 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2022 · period end December 31, 2022 · first reported March 31, 2023 · EPA return-to-compliance field December 31, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2884485ENF January 4, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 2757108 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start August 1, 2021 · period end August 31, 2021 · first reported December 29, 2021 · EPA return-to-compliance field August 31, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2757108ENF September 30, 2021 Resolving State Compliance achieved 31559 October 21, 2021 Informal State Violation/Reminder Notice
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