F0/100
CTWC - NORTHERN REG-WESTERN SYSTEM — Water Quality Report 2026
Serving 101,313 people · Connecticut
Water Source
Surface Water
County
—
System ID
CT0473011
Violations
202
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.008 µg/L | 0.004 µg/L | Over Limit |
PFOS | 0.006 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Violation related to Turbidity
When: December 14, 2024Rule: 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 CTWC - NORTHERN REG-WESTERN SYSTEM
Is CTWC - NORTHERN REG-WESTERN SYSTEM water safe to drink?
CTWC - NORTHERN REG-WESTERN SYSTEM water receives a grade of F (0/100), which is considered failing. 2 contaminant(s) exceed EPA legal limits and 202 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CTWC - NORTHERN REG-WESTERN SYSTEM detected?
69 contaminants were tested in CTWC - NORTHERN REG-WESTERN SYSTEM's water. Notable contaminants include PFOA, PFOS. 2 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does CTWC - NORTHERN REG-WESTERN SYSTEM have any EPA violations?
Yes, CTWC - NORTHERN REG-WESTERN SYSTEM has 202 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR.
How many people does CTWC - NORTHERN REG-WESTERN SYSTEM serve?
CTWC - NORTHERN REG-WESTERN SYSTEM serves approximately 101,313 people, Connecticut. The system provides water to 12 communities: East Granby, East Windsor, Ellington, Enfield, Manchester, and 7 more.
What type of water does CTWC - NORTHERN REG-WESTERN SYSTEM provide?
CTWC - NORTHERN REG-WESTERN SYSTEM 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 CT0473011.
How does CTWC - NORTHERN REG-WESTERN SYSTEM compare to other utilities in Connecticut?
CTWC - NORTHERN REG-WESTERN SYSTEM scores 0/100 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.