C47/100
ROCHESTER — Water Quality Report 2026
Serving 1,762 people · Washington
Water Source
Groundwater
County
—
System ID
WA5373300
Violations
38
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.09 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 2016.
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 ROCHESTER
Is ROCHESTER water safe to drink?
ROCHESTER water receives a grade of C (47/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 38 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ROCHESTER detected?
2 contaminants were tested in ROCHESTER's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does ROCHESTER have any EPA violations?
Yes, ROCHESTER has 38 EPA violation(s) on record, with the most recent in 2016. Violation types include Other, MR, MCL. 1 are health-based violations.
How many people does ROCHESTER serve?
ROCHESTER serves approximately 1,762 people, Washington.
What type of water does ROCHESTER provide?
ROCHESTER sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5373300.
How does ROCHESTER compare to other utilities in Washington?
ROCHESTER 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.