Water Quality in Hillsborough, CA
2 water systems serving 11,926 people
City Overview
Average lead detection across Hillsborough water systems is 3.3 ppb (Low). The EPA action level is 15 ppb.
Violation Summary
| Total violations on record | 29 |
| Health-based violations | 14 |
| Lead action level violations | 0 |
| Open (unresolved) violations | 0 |
Water Systems in Hillsborough
Frequently Asked Questions
Is Hillsborough tap water safe to drink?
Hillsborough tap water meets EPA standards for most contaminants. Review the individual water system pages below for the latest lead sample results and violation history.
What is the water quality in Hillsborough, California?
Hillsborough has 2 public water systems serving approximately 11,926 people. The average lead level across sampled systems is 3.3 ppb. There are 29 total violations on record.
Does Hillsborough have lead in the water?
EPA monitoring data shows an average lead detection of 3.3 ppb across Hillsborough's water systems. The EPA action level is 15 ppb. No lead action level violations are currently reported.
How many water utilities serve Hillsborough?
2 public water systems are registered in Hillsborough, California with the EPA Safe Drinking Water Information System. Together they serve approximately 11,926 people.