Public water system record
Graton Mutual Water System
Serves Graton, Sonoma County, CA · 50 people served
Federal records show no health-based violations and no monitoring or reporting issues for Graton Mutual Water System 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
- 0
Key facts
- Graton Mutual Water System draws water from 1 well.
- Most recent formal enforcement: compliance order (no penalty) by California, December 2007.
- Record on file since 1999, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 16 service lines.
Check whether Graton Mutual Water System 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, and no monitoring or reporting violations either.
Full record since 1999
EPA's records for Graton Mutual Water System go back to 1999. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 5 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2000s | 2 | 4 |
Most recent health-based violation before October 19, 2016: Total Coliform, began June 2003, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2000 | Resolved |
Enforcement actions
California regulators took 4 formal enforcement actions against Graton Mutual Water System between 2000 and 2007. The most recent was a compliance order (no penalty) in December 2007.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 14, 2007 | California | Compliance order (no penalty) | 3 violations: Benzene, Atrazine, Nitrite |
| Jun 13, 2007 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Aug 1, 2003 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Nov 1, 2000 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
Where the water comes from
Graton Mutual Water System draws water from 1 well. 1 other public water system has an emergency connection to Graton Mutual Water System.
Annual water quality report
Graton Mutual Water System 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 Graton Mutual Water System 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 California.
Certified drinking water labs by state EPA guidance for private wells