C55/100
EDWARDS AFB - MAIN BASE — Water Quality Report 2026
Serving 11,316 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA1510701
Violations
10
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: November 1, 2023 – November 30, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued
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 EDWARDS AFB - MAIN BASE
Is EDWARDS AFB - MAIN BASE water safe to drink?
EDWARDS AFB - MAIN BASE water receives a grade of C (55/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 10 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has EDWARDS AFB - MAIN BASE detected?
69 contaminants were tested in EDWARDS AFB - MAIN BASE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does EDWARDS AFB - MAIN BASE have any EPA violations?
Yes, EDWARDS AFB - MAIN BASE has 10 EPA violation(s) on record, with the most recent in 2023. Violation types include MCL, MR. 8 are health-based violations.
How many people does EDWARDS AFB - MAIN BASE serve?
EDWARDS AFB - MAIN BASE serves approximately 11,316 people, California.
What type of water does EDWARDS AFB - MAIN BASE provide?
EDWARDS AFB - MAIN BASE 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 CA1510701.
How does EDWARDS AFB - MAIN BASE compare to other utilities in California?
EDWARDS AFB - MAIN BASE scores 55/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our California state page for a full comparison of water systems.