Public water system record
City of Zillah
Serves Zillah, Yakima County, WA · 3,518 people served
Federal records show 1 health-based violation and 3 monitoring/reporting issues for City of Zillah in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 3
Key facts
- City of Zillah draws water from 3 wells.
- Record on file since 1979, with 7 health-based violations before October 19, 2016.
Check whether City of Zillah 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, 2023 | Resolved | Yes |
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, 2022 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2017 | Resolved |
Full record since 1979
EPA's records for City of Zillah go back to 1979. Before October 19, 2016 they list 7 health-based violations (7 archived by EPA without a recorded fix) and 33 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 9 |
| 1990s | 5 | 3 |
| 2000s | 2 | 21 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 1 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2004, Archived.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2004 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2003 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1997 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1995 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1995 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1991 | Archived |
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 Zillah draws water from 3 wells.
Annual water quality report
City of Zillah 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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 Washington.
Certified drinking water labs by state EPA guidance for private wells