A89/100
SUBURBAN WATER SYSTEMS-SAN JOSE — Water Quality Report 2026
Serving 168,843 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA1910205
Violations
3
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2022 – April 30, 2022Rule: Total Coliform RuleEnforcement: Formal — state order issued
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 SUBURBAN WATER SYSTEMS-SAN JOSE
Is SUBURBAN WATER SYSTEMS-SAN JOSE water safe to drink?
SUBURBAN WATER SYSTEMS-SAN JOSE water receives a grade of A (89/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has SUBURBAN WATER SYSTEMS-SAN JOSE detected?
76 contaminants were tested in SUBURBAN WATER SYSTEMS-SAN JOSE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does SUBURBAN WATER SYSTEMS-SAN JOSE have any EPA violations?
Yes, SUBURBAN WATER SYSTEMS-SAN JOSE has 3 EPA violation(s) on record, with the most recent in 2022. Violation types include MON, TT, MCL. 2 are health-based violations.
How many people does SUBURBAN WATER SYSTEMS-SAN JOSE serve?
SUBURBAN WATER SYSTEMS-SAN JOSE serves approximately 168,843 people, California.
What type of water does SUBURBAN WATER SYSTEMS-SAN JOSE provide?
SUBURBAN WATER SYSTEMS-SAN JOSE 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 CA1910205.
How does SUBURBAN WATER SYSTEMS-SAN JOSE compare to other utilities in California?
SUBURBAN WATER SYSTEMS-SAN JOSE scores 89/100 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.