Public water system record
Loma Mar Mutual
Serves Loma Mar, San Mateo County, CA · 65 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Loma Mar Mutual 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
- 1
Key facts
- Loma Mar Mutual draws water from 1 surface water intake.
- Most recent formal enforcement: compliance order (no penalty) by California, February 2018.
- Record on file since 1980, with 12 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 5 unknown out of 34 service lines.
Check whether Loma Mar Mutual 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.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2003 | Resolved |
Full record since 1980
EPA's records for Loma Mar Mutual go back to 1980. Before October 19, 2016 they list 12 health-based violations (11 resolved, 1 archived by EPA without a recorded fix) and 31 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 26 |
| 1990s | 1 | 1 |
| 2000s | 6 | 4 |
| 2010 to October 18, 2016 | 4 | 0 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began August 2016, Resolved.
Show all 12 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.146 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
|
Apr 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2014 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2013 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jan 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2004 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 2003 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2003 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2002 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1996 | Resolved |
|
Mercury
Contaminant limit exceeded
|
Jun 1, 1980 | Archived |
Enforcement actions
California regulators took 5 formal enforcement actions against Loma Mar Mutual and issued 1 boil water order between 1985 and 2018. The most recent was a compliance order (no penalty) in February 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 27, 2018 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Aug 31, 2016 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Jul 1, 2016 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Nov 17, 2014 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Jun 3, 2013 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Sep 30, 1985 | California | Boil water order | 1 violation |
Where the water comes from
Loma Mar Mutual draws water from 1 surface water intake.
Annual water quality report
Loma Mar Mutual 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 Loma Mar Mutual 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