Public water system record
City of Mosier
Serves Mosier, Wasco County, OR · 468 people served
Federal records show no health-based violations and 21 monitoring/reporting issues for City of Mosier in the last ten years. At least one of these issues remains unresolved.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 21
Key facts
- City of Mosier draws water from 1 well.
- Most recent formal enforcement: compliance order with a penalty by Oregon, February 2000.
- Record on file since 1976, with 14 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 224 service lines.
Check whether City of Mosier 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 |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2020 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
COLIPHAGE
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2016 | Resolved |
Full record since 1976
EPA's records for City of Mosier go back to 1976. Before October 19, 2016 they list 14 health-based violations (13 resolved, 1 archived by EPA without a recorded fix) and 54 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 2 |
| 1990s | 11 | 18 |
| 2000s | 1 | 32 |
| 2010 to October 18, 2016 | 2 | 2 |
| October 19, 2016 to 2019 | 0 | 6 |
| 2020s | 0 | 15 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2012, Resolved.
Show all 14 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1994 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
May 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1992 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1992 | Resolved |
Enforcement actions
Oregon regulators took 1 formal enforcement action against City of Mosier in 2000. The most recent was a compliance order with a penalty in February 2000.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 8, 2000 | Oregon | Compliance order with a penalty | 9 violations (5 health-based): Total Coliform |
Where the water comes from
City of Mosier draws water from 1 well.
Annual water quality report
City of Mosier 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 Mosier 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