TUALATIN, OR · Washington County
TUALATIN, CITY OF Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.
System facts
- System ID (PWSID)
- OR4100906
- System type
- Community Water System
- Population served
- 28,106
- Service connections
- 7,400
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
June 1, 2024 – June 30, 2024
ResolvedMonitoring and Reporting (DBP)
—TTHM
October 1, 2019 – December 31, 2019
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
October 1, 2019 – December 31, 2019
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
January 1, 2019 – January 31, 2019
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2017 – March 31, 2017
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2017 – March 31, 2017
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| June 1, 2024 – June 30, 2024 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| October 1, 2019 – December 31, 2019 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| October 1, 2019 – December 31, 2019 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| January 1, 2019 – January 31, 2019 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- July 26, 2024State Compliance achieved3 linked violations
- January 14, 2020State Compliance achieved3 linked violations
Contact
TUALATIN, CITY OF
503-691-3095
TUALATIN, OR 97062