Public water system record
Sierra Mutual Water Company
Serves an area of Tulare County, CA · 43 people served
Federal records show 18 health-based violations and 7 monitoring/reporting issues for Sierra Mutual Water Company in the last ten years. The most serious issue in this window was a resolved Nitrate violation.
System profile
- Health-based violations, last 10 years
- 18
- Resolved
- 18
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 7
Key facts
- Sierra Mutual Water Company draws water from 2 wells.
- Highest measured level in the last 10 years: Nitrate, 23.45 mg/L, federal limit 10 mg/L (2.3 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by California, November 2020.
- Record on file since 2004, with 17 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 16 service lines.
Check whether Sierra Mutual Water Company 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
Contaminant limit exceeded
Measured 19.35 mg/L, federal limit 10 mg/L (1.9 times the limit)
|
330 | Jul 1, 2021 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 17.45 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
330 | Apr 1, 2021 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 17.05 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
330 | Jan 1, 2021 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 17.45 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
330 | Oct 1, 2020 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 17.75 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
330 | Apr 1, 2020 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 18.15 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
330 | Jan 1, 2020 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 18.7 mg/L, federal limit 10 mg/L (1.9 times the limit)
|
330 | Oct 1, 2019 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 19.5 mg/L, federal limit 10 mg/L (2 times the limit)
|
330 | Jul 1, 2019 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 19.5 mg/L, federal limit 10 mg/L (2 times the limit)
|
330 | Apr 1, 2019 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 20.75 mg/L, federal limit 10 mg/L (2.1 times the limit)
|
330 | Jan 1, 2019 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 20.9 mg/L, federal limit 10 mg/L (2.1 times the limit)
|
330 | Oct 1, 2018 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 20.2 mg/L, federal limit 10 mg/L (2 times the limit)
|
330 | Jul 1, 2018 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 20.15 mg/L, federal limit 10 mg/L (2 times the limit)
|
330 | Apr 1, 2018 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 20 mg/L, federal limit 10 mg/L (2 times the limit)
|
330 | Oct 1, 2017 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 22 mg/L, federal limit 10 mg/L (2.2 times the limit)
|
330 | Jul 1, 2017 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 21.6 mg/L, federal limit 10 mg/L (2.2 times the limit)
|
330 | Apr 1, 2017 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 23.45 mg/L, federal limit 10 mg/L (2.3 times the limit)
|
330 | Jan 1, 2017 | Resolved | Yes |
|
Nitrate
Contaminant limit exceeded
Measured 23.2 mg/L, federal limit 10 mg/L (2.3 times the limit)
|
330 | Oct 1, 2016 | 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
|
Jul 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2019 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 2004
EPA's records for Sierra Mutual Water Company go back to 2004. Before October 19, 2016 they list 17 health-based violations (17 resolved) and 12 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 9 |
| 2010 to October 18, 2016 | 16 | 3 |
| October 19, 2016 to 2019 | 11 | 5 |
| 2020s | 6 | 2 |
Most recent health-based violation before October 19, 2016: Nitrate (acute), began October 2016, Resolved.
Show all 17 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate (acute)
Contaminant limit exceeded
Measured 23.2 mg/L, federal limit 10 mg/L (2.3 times the limit)
|
Oct 1, 2016 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 23.8 mg/L, federal limit 10 mg/L (2.4 times the limit)
|
Jul 1, 2016 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 20 mg/L, federal limit 10 mg/L (2 times the limit)
|
Jan 1, 2016 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2014 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2013 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2013 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2013 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2013 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2011 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2011 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2011 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2010 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2010 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2010 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2009 | Resolved |
Enforcement actions
California regulators took 10 formal enforcement actions against Sierra Mutual Water Company between 2007 and 2020. The most recent was a compliance order (no penalty) in November 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 20, 2020 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Oct 23, 2020 | California | Compliance order with a penalty | 1 violation (1 health-based): Nitrate |
| Sep 4, 2020 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Jun 26, 2019 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Apr 27, 2018 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Nov 20, 2017 | California | Compliance order (no penalty) | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Mar 20, 2017 | California | Compliance order with a penalty | 17 violations (16 health-based): Nitrate |
| May 27, 2016 | California | Compliance order (no penalty) | 34 violations (33 health-based): Nitrate |
| Sep 14, 2010 | California | Compliance order (no penalty) | 13 violations (13 health-based): Nitrate |
| Oct 1, 2007 | California | Compliance order (no penalty) | 3 violations (3 health-based): Nitrate |
What the violations mean
Nitrate
18 incidentsNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Where the water comes from
Sierra Mutual Water Company draws water from 2 wells.
Annual water quality report
Sierra Mutual Water Company 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 Mutual Water Company 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