C47/100
SUMMIT WATER & SUPPLY CO — Water Quality Report 2026
Serving 16,109 people · Washington
Water Source
Groundwater
County
—
System ID
WA5385050
Violations
14
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.96 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 SUMMIT WATER & SUPPLY CO
Is SUMMIT WATER & SUPPLY CO water safe to drink?
SUMMIT WATER & SUPPLY CO water receives a grade of C (47/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 14 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SUMMIT WATER & SUPPLY CO detected?
67 contaminants were tested in SUMMIT WATER & SUPPLY CO's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does SUMMIT WATER & SUPPLY CO have any EPA violations?
Yes, SUMMIT WATER & SUPPLY CO has 14 EPA violation(s) on record, with the most recent in 2018. Violation types include Other, MR, MCL. 7 are health-based violations.
How many people does SUMMIT WATER & SUPPLY CO serve?
SUMMIT WATER & SUPPLY CO serves approximately 16,109 people, Washington.
What type of water does SUMMIT WATER & SUPPLY CO provide?
SUMMIT WATER & SUPPLY CO sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5385050.
How does SUMMIT WATER & SUPPLY CO compare to other utilities in Washington?
SUMMIT WATER & SUPPLY CO scores 47/100 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.