F0/100
HANFORD, CITY OF — Water Quality Report 2026
Serving 62,127 people · California
Water Source
Groundwater
County
—
System ID
CA1610003
Violations
115
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2023 – August 8, 2024Rule: Ground Water 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 HANFORD, CITY OF
Is HANFORD, CITY OF water safe to drink?
HANFORD, CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 115 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has HANFORD, CITY OF detected?
66 contaminants were tested in HANFORD, CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does HANFORD, CITY OF have any EPA violations?
Yes, HANFORD, CITY OF has 115 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MCL. 113 are health-based violations.
How many people does HANFORD, CITY OF serve?
HANFORD, CITY OF serves approximately 62,127 people, California. The system provides water to 1 community: Hanford.
What type of water does HANFORD, CITY OF provide?
HANFORD, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1610003.
How does HANFORD, CITY OF compare to other utilities in California?
HANFORD, CITY OF scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our California state page for a full comparison of water systems.