Public water system record
Tualatin Valley Water District
Serves Aloha, Bethany, Hillsboro and 10 more places, Washington County, OR · 224,600 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Tualatin Valley Water District in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- Tualatin Valley Water District buys its water from Joint Water Commission and Portland Water Bureau.
- Record on file since 2001, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 62,067 service lines.
Check whether Tualatin Valley Water District serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Full record since 2001
EPA's records for Tualatin Valley Water District go back to 2001. Before October 19, 2016 they list no health-based violations and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 0 | 1 |
| 2020s | 0 | 1 |
Where the water comes from
Tualatin Valley Water District buys its water from Joint Water Commission and Portland Water Bureau. EPA also lists 1 well, all for emergency, seasonal or other part-time use.
Buys water from
- Joint Water Commission Hillsboro, OR
- Portland Water Bureau Portland, OR
Annual water quality report
Tualatin Valley Water District must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Oregon.
Certified drinking water labs by state EPA guidance for private wells