C46/100
NAPAVINE CITY OF — Water Quality Report 2026
Serving 3,095 people · Washington
Water Source
Groundwater
County
—
System ID
WA5358200
Violations
27
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 3.40 mg/L | 1.30 mg/L | Over Limit |
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 2005.
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 NAPAVINE CITY OF
Is NAPAVINE CITY OF water safe to drink?
NAPAVINE CITY OF water receives a grade of C (46/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 27 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has NAPAVINE CITY OF detected?
2 contaminants were tested in NAPAVINE CITY OF's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does NAPAVINE CITY OF have any EPA violations?
Yes, NAPAVINE CITY OF has 27 EPA violation(s) on record, with the most recent in 2005. Violation types include MR, MCL, Other. 4 are health-based violations.
How many people does NAPAVINE CITY OF serve?
NAPAVINE CITY OF serves approximately 3,095 people, Washington.
What type of water does NAPAVINE CITY OF provide?
NAPAVINE CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5358200.
How does NAPAVINE CITY OF compare to other utilities in Washington?
NAPAVINE CITY OF scores 46/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Washington state page for a full comparison of water systems.