D22/100
MERIDEN WATER DIVISION — Water Quality Report 2026
Serving 58,441 people · Connecticut
Water Source
Surface Water
County
—
System ID
CT0800011
Violations
54
Contaminant Test Results
EPA Violation History
6
Violations (last 5yr)
4
Unresolved
2
Health-Related
TIER 2Unresolved
Violation related to Consumer Confidence Report
TIER 2Unresolved
Violation related to Consumer Confidence Report
TIER 3Resolved
Surface water treatment technique failure
When: August 10, 2024 – September 17, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2022 – June 30, 2023Rule: Ground Water RuleEnforcement: 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 MERIDEN WATER DIVISION
Is MERIDEN WATER DIVISION water safe to drink?
MERIDEN WATER DIVISION water receives a grade of D (22/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 54 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MERIDEN WATER DIVISION detected?
76 contaminants were tested in MERIDEN WATER DIVISION's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does MERIDEN WATER DIVISION have any EPA violations?
Yes, MERIDEN WATER DIVISION has 54 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, TT, MR. 6 are health-based violations.
How many people does MERIDEN WATER DIVISION serve?
MERIDEN WATER DIVISION serves approximately 58,441 people, Connecticut. The system provides water to 5 communities: Berlin, Cheshire, Meriden, Southington, Wallingford.
What type of water does MERIDEN WATER DIVISION provide?
MERIDEN WATER 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 CT0800011.
How does MERIDEN WATER DIVISION compare to other utilities in Connecticut?
MERIDEN WATER DIVISION scores 22/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Connecticut state page for a full comparison of water systems.