Public water system record
City of Gridley
Serves Gridley, Butte County, CA · 7,269 people served
Federal records show 1 health-based violation and 1 monitoring/reporting issue for City of Gridley in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- City of Gridley draws water from 7 wells (2 of them for emergency, seasonal or other part-time use).
- Record on file since 1999, with 3 health-based violations before October 19, 2016.
Check whether City of Gridley 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 REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
Full record since 1999
EPA's records for City of Gridley go back to 1999. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 0 |
| 2000s | 2 | 1 |
| 2020s | 1 | 1 |
Most recent health-based violation before October 19, 2016: Arsenic, began October 2008, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.0132 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Oct 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0107 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1999 | Resolved |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
City of Gridley draws water from 7 wells (2 of them for emergency, seasonal or other part-time use).
Annual water quality report
City of Gridley 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 California.
Certified drinking water labs by state EPA guidance for private wells