Public water system record
West Slope Water District
Serves West Slope and Raleigh Hills, Washington County, OR · 11,000 people served
Federal records show 1 health-based violation and 4 monitoring/reporting issues for West Slope Water District in the last ten years. The most serious issue in this window was a resolved Lead and Copper Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 4
Key facts
- West Slope Water District buys its water from Portland Water Bureau.
- Record on file since 1994, with 4 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 2,946 service lines.
Check whether West Slope 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
350 | Mar 11, 2018 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2017 | Resolved |
Full record since 1994
EPA's records for West Slope Water District go back to 1994. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 13 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 3 |
| 2000s | 0 | 7 |
| 2010 to October 18, 2016 | 2 | 3 |
| October 19, 2016 to 2019 | 1 | 3 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began October 2011, Resolved.
Show all 4 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1995 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1994 | Resolved |
What the violations mean
Lead and Copper Rule
1 incidentThe system did not complete a treatment step or action that the Lead and Copper Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
West Slope Water District buys its water from Portland Water Bureau. It lists no wells or intakes of its own.
Buys water from
- Portland Water Bureau Portland, OR
Annual water quality report
West Slope 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