A80/100
RAINBOW MUNICIPAL WD — Water Quality Report 2026
Serving 23,536 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA3710016
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2006.
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 RAINBOW MUNICIPAL WD
Is RAINBOW MUNICIPAL WD water safe to drink?
RAINBOW MUNICIPAL WD water receives a grade of A (80/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has RAINBOW MUNICIPAL WD detected?
69 contaminants were tested in RAINBOW MUNICIPAL WD's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does RAINBOW MUNICIPAL WD have any EPA violations?
Yes, RAINBOW MUNICIPAL WD has 5 EPA violation(s) on record, with the most recent in 2006. Violation types include Other, MCL. 3 are health-based violations.
How many people does RAINBOW MUNICIPAL WD serve?
RAINBOW MUNICIPAL WD serves approximately 23,536 people, California.
What type of water does RAINBOW MUNICIPAL WD provide?
RAINBOW MUNICIPAL WD 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 CA3710016.
How does RAINBOW MUNICIPAL WD compare to other utilities in California?
RAINBOW MUNICIPAL WD scores 80/100 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.