A98/100
CITY OF PITTSBURG — Water Quality Report 2026
Serving 62,500 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA0710008
Violations
2
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2002.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About CITY OF PITTSBURG
Is CITY OF PITTSBURG water safe to drink?
CITY OF PITTSBURG water receives a grade of A (98/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CITY OF PITTSBURG detected?
76 contaminants were tested in CITY OF PITTSBURG's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF PITTSBURG have any EPA violations?
Yes, CITY OF PITTSBURG has 2 EPA violation(s) on record, with the most recent in 2002. Violation types include MR.
How many people does CITY OF PITTSBURG serve?
CITY OF PITTSBURG serves approximately 62,500 people, California. The system provides water to 1 community: Pittsburg.
What type of water does CITY OF PITTSBURG provide?
CITY OF PITTSBURG sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA0710008.
How does CITY OF PITTSBURG compare to other utilities in California?
CITY OF PITTSBURG scores 98/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.