Public water system record
City of Wasco
Serves Wasco, Sherman County, OR · 460 people served
Federal records show 1 health-based violation and 3 monitoring/reporting issues for City of Wasco in the last ten years. The most serious issue in this window was a Revised Total Coliform Rule violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 3
Key facts
- City of Wasco draws water from 2 wells.
- Record on file since 1976, with 15 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 278 service lines.
Check whether City of Wasco 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 |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
Oct 22, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2025 | Resolved |
Full record since 1976
EPA's records for City of Wasco go back to 1976. Before October 19, 2016 they list 15 health-based violations (15 resolved) and 84 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 2 |
| 1990s | 9 | 5 |
| 2000s | 1 | 55 |
| 2010 to October 18, 2016 | 5 | 22 |
| 2020s | 1 | 3 |
Most recent health-based violation before October 19, 2016: Total Coliform, began December 2014, Resolved.
Show all 15 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2010 | Resolved |
|
Di(2-ethylhexyl) phthalate
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.006 mg/L (1.8 times the limit)
|
Jan 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1997 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1996 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Oct 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1993 | Resolved |
What the violations mean
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
City of Wasco draws water from 2 wells.
Annual water quality report
City of Wasco 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask City of Wasco for a copy.
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