Public water system record
City of Hermiston
Serves Hermiston, Umatilla County, OR · 20,000 people served
Federal records show no health-based violations and 6 monitoring/reporting issues for City of Hermiston 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
- 6
Key facts
- City of Hermiston draws water from 4 wells and 1 surface water intake.
- Record on file since 1976, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 5,662 service lines.
Check whether City of Hermiston 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
|
Feb 1, 2025 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
COLIPHAGE
Monitoring and reporting
|
Sep 1, 2022 | Resolved |
|
COLIPHAGE
Monitoring and reporting
|
Sep 1, 2022 | Resolved |
|
COLIPHAGE
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
COLIPHAGE
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
Full record since 1976
EPA's records for City of Hermiston go back to 1976. Before October 19, 2016 they list 8 health-based violations (7 resolved, 1 archived by EPA without a recorded fix) and 118 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 2 |
| 1990s | 8 | 12 |
| 2000s | 0 | 82 |
| 2010 to October 18, 2016 | 0 | 22 |
| 2020s | 0 | 6 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began December 1998, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1998 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1992 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1992 | Resolved |
Where the water comes from
City of Hermiston draws water from 4 wells and 1 surface water intake.
Annual water quality report
City of Hermiston 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