Public water system record
Sierra Grande Estates Mutual Water Co.
Serves Wilkerson, Inyo County, CA · 138 people served
Federal records show 1 health-based violation and no monitoring/reporting issues for Sierra Grande Estates Mutual Water Co. in the last ten years. The most serious issue in this window was a resolved Nitrate-Nitrite violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 0
Key facts
- Sierra Grande Estates Mutual Water Co. draws water from 1 well.
- Most recent formal enforcement: compliance order (no penalty) by California, September 2018.
- Record on file since 1979, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 49 service lines.
Check whether Sierra Grande Estates Mutual Water Co. 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 |
|---|---|---|---|---|
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2018 | Resolved | Yes |
Full record since 1979
EPA's records for Sierra Grande Estates Mutual Water Co. go back to 1979. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1980s | 0 | 2 |
| 1990s | 0 | 1 |
| 2000s | 1 | 0 |
| October 19, 2016 to 2019 | 1 | 0 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2008, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2008 | Resolved |
Enforcement actions
California regulators took 1 formal enforcement action against Sierra Grande Estates Mutual Water Co. in 2018. The most recent was a compliance order (no penalty) in September 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 25, 2018 | California | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
What the violations mean
Nitrate-Nitrite
1 incidentTest results for Nitrate-Nitrite were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Sierra Grande Estates Mutual Water Co. draws water from 1 well.
Annual water quality report
Sierra Grande Estates Mutual Water Co. 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 Sierra Grande Estates Mutual Water Co. 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