B65/100
CALAIS WATER DEPT — Water Quality Report 2026
Serving 2,775 people · Maine
Water Source
Groundwater
County
—
System ID
ME0090290
Violations
8
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 5.49 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
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 CALAIS WATER DEPT
Is CALAIS WATER DEPT water safe to drink?
CALAIS WATER DEPT water receives a grade of B (65/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CALAIS WATER DEPT detected?
2 contaminants were tested in CALAIS WATER DEPT's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does CALAIS WATER DEPT have any EPA violations?
Yes, CALAIS WATER DEPT has 8 EPA violation(s) on record, with the most recent in 2022. Violation types include MCL, MR, Other. 4 are health-based violations.
How many people does CALAIS WATER DEPT serve?
CALAIS WATER DEPT serves approximately 2,775 people, Maine. The system provides water to 1 community: Calais.
What type of water does CALAIS WATER DEPT provide?
CALAIS WATER DEPT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is ME0090290.
How does CALAIS WATER DEPT compare to other utilities in Maine?
CALAIS WATER DEPT scores 65/100 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.