B77/100
HEALDSBURG, CITY OF — Water Quality Report 2026
Serving 10,985 people · California
Water Source
Groundwater Under Influence of Surface Water
County
—
System ID
CA4910005
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.12 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2000.
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 HEALDSBURG, CITY OF
Is HEALDSBURG, CITY OF water safe to drink?
HEALDSBURG, CITY OF water receives a grade of B (77/100), which is considered good. Out of 70 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has HEALDSBURG, CITY OF detected?
70 contaminants were tested in HEALDSBURG, CITY OF's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does HEALDSBURG, CITY OF have any EPA violations?
Yes, HEALDSBURG, CITY OF has 3 EPA violation(s) on record, with the most recent in 2000. Violation types include MCL, TT. 3 are health-based violations.
How many people does HEALDSBURG, CITY OF serve?
HEALDSBURG, CITY OF serves approximately 10,985 people, California. The system provides water to 1 community: Healdsburg.
What type of water does HEALDSBURG, CITY OF provide?
HEALDSBURG, CITY OF sources its water from groundwater under influence of surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA4910005.
How does HEALDSBURG, CITY OF compare to other utilities in California?
HEALDSBURG, CITY OF scores 77/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our California state page for a full comparison of water systems.