A83/100
CALLAYOMI COUNTY WATER DISTRICT — Water Quality Report 2026
Serving 1,598 people · California
Water Source
Groundwater
County
—
System ID
CA1710013
Violations
5
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 2Unresolved
Treatment technique violation
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
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 CALLAYOMI COUNTY WATER DISTRICT
Is CALLAYOMI COUNTY WATER DISTRICT water safe to drink?
CALLAYOMI COUNTY WATER DISTRICT water receives a grade of A (83/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CALLAYOMI COUNTY WATER DISTRICT detected?
1 contaminants were tested in CALLAYOMI COUNTY WATER DISTRICT's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CALLAYOMI COUNTY WATER DISTRICT have any EPA violations?
Yes, CALLAYOMI COUNTY WATER DISTRICT has 5 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, RPT, MR. 3 are health-based violations.
How many people does CALLAYOMI COUNTY WATER DISTRICT serve?
CALLAYOMI COUNTY WATER DISTRICT serves approximately 1,598 people, California.
What type of water does CALLAYOMI COUNTY WATER DISTRICT provide?
CALLAYOMI COUNTY WATER DISTRICT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1710013.
How does CALLAYOMI COUNTY WATER DISTRICT compare to other utilities in California?
CALLAYOMI COUNTY WATER DISTRICT scores 83/100 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.