A90/100
INDIO WATER AUTHORITY — Water Quality Report 2026
Serving 84,757 people · California
Water Source
Groundwater
County
—
System ID
CA3310020
Violations
6
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Exceeded the MCL for disinfection byproducts
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 INDIO WATER AUTHORITY
Is INDIO WATER AUTHORITY water safe to drink?
INDIO WATER AUTHORITY water receives a grade of A (90/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has INDIO WATER AUTHORITY detected?
66 contaminants were tested in INDIO WATER AUTHORITY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does INDIO WATER AUTHORITY have any EPA violations?
Yes, INDIO WATER AUTHORITY has 6 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, MCL, Other. 1 are health-based violations.
How many people does INDIO WATER AUTHORITY serve?
INDIO WATER AUTHORITY serves approximately 84,757 people, California.
What type of water does INDIO WATER AUTHORITY provide?
INDIO WATER AUTHORITY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA3310020.
How does INDIO WATER AUTHORITY compare to other utilities in California?
INDIO WATER AUTHORITY scores 90/100 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.