B61/100
LEWISTON WATER & SEWER DIVISION — Water Quality Report 2026
Serving 23,720 people · Maine
Water Source
Surface Water
County
—
System ID
ME0090830
Violations
5
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.42 mg/L | 1.30 mg/L | Over Limit |
chlorate | 428.50 µg/L | — | Above Goal |
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 2007.
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 LEWISTON WATER & SEWER DIVISION
Is LEWISTON WATER & SEWER DIVISION water safe to drink?
LEWISTON WATER & SEWER DIVISION water receives a grade of B (61/100), which is considered good. Out of 70 contaminants tested, 1 exceed EPA legal limits. 3 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has LEWISTON WATER & SEWER DIVISION detected?
70 contaminants were tested in LEWISTON WATER & SEWER DIVISION's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does LEWISTON WATER & SEWER DIVISION have any EPA violations?
Yes, LEWISTON WATER & SEWER DIVISION has 5 EPA violation(s) on record, with the most recent in 2007. Violation types include TT, MCL. 5 are health-based violations.
How many people does LEWISTON WATER & SEWER DIVISION serve?
LEWISTON WATER & SEWER DIVISION serves approximately 23,720 people, Maine. The system provides water to 1 community: Lewiston.
What type of water does LEWISTON WATER & SEWER DIVISION provide?
LEWISTON WATER & SEWER DIVISION sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is ME0090830.
How does LEWISTON WATER & SEWER DIVISION compare to other utilities in Maine?
LEWISTON WATER & SEWER DIVISION scores 61/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Maine state page for a full comparison of water systems.