F1/100
SOUTH NORWALK ELECTRIC & WATER — Water Quality Report 2026
Serving 42,000 people · Connecticut
Water Source
Surface Water
County
—
System ID
CT1030021
Violations
76
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: August 10, 2024 – August 13, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – August 12, 2024Enforcement: 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 SOUTH NORWALK ELECTRIC & WATER
Is SOUTH NORWALK ELECTRIC & WATER water safe to drink?
SOUTH NORWALK ELECTRIC & WATER water receives a grade of F (1/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 76 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SOUTH NORWALK ELECTRIC & WATER detected?
69 contaminants were tested in SOUTH NORWALK ELECTRIC & WATER's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SOUTH NORWALK ELECTRIC & WATER have any EPA violations?
Yes, SOUTH NORWALK ELECTRIC & WATER has 76 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, TT, MR. 5 are health-based violations.
How many people does SOUTH NORWALK ELECTRIC & WATER serve?
SOUTH NORWALK ELECTRIC & WATER serves approximately 42,000 people, Connecticut. The system provides water to 4 communities: Darien, New Canaan, Norwalk, Wilton.
What type of water does SOUTH NORWALK ELECTRIC & WATER provide?
SOUTH NORWALK ELECTRIC & WATER 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 CT1030021.
How does SOUTH NORWALK ELECTRIC & WATER compare to other utilities in Connecticut?
SOUTH NORWALK ELECTRIC & WATER scores 1/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Connecticut state page for a full comparison of water systems.