Public water system record
Town of Hillsborough
Serves Hillsborough, San Mateo County, CA · 11,766 people served
Federal records show no health-based violations and no monitoring or reporting issues for Town of Hillsborough 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
- Town of Hillsborough buys its water from San Francisco Regional Water System.
- Most recent formal enforcement: compliance order (no penalty) by California, June 2014.
- Record on file since 1992, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 4,365 service lines.
Check whether Town of Hillsborough 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 1992
EPA's records for Town of Hillsborough go back to 1992. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2010 to October 18, 2016 | 1 | 0 |
Most recent health-based violation before October 19, 2016: Total Coliform, began May 2014, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2014 | Resolved |
Enforcement actions
California regulators took 1 formal enforcement action against Town of Hillsborough in 2014. The most recent was a compliance order (no penalty) in June 2014.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jun 18, 2014 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
Where the water comes from
Town of Hillsborough buys its water from San Francisco Regional Water System. It lists no wells or intakes of its own.
Buys water from
- San Francisco Regional Water System Burlingame, CA
Annual water quality report
Town of Hillsborough 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 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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