Hillsborough, California Water Quality Report
Water quality data for 2 water systems serving 11,926 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (2)
Violation
Unknown
Violation
Unknown
Resolved Violations (27)
3A
Apr 1, 2017 — Apr 30, 2017
3A
Apr 1, 2017 — Apr 30, 2017
22
May 1, 2014 — May 31, 2014
22
May 1, 2014 — May 31, 2014
71
Jul 1, 2013
+ 22 more resolved violations
Frequently Asked Questions
Is Hillsborough tap water safe to drink?
Hillsborough's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Hillsborough tap water?
0 contaminants have been detected in Hillsborough's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Hillsborough?
Install a water filter rated for the specific contaminants found in Hillsborough's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Hillsborough have any water quality violations?
Yes, Hillsborough currently has 2 active violations. See the violations section above for details.