F0/100
CTWC - SHORELINE REGION-GUILFORD SYSTEM — Water Quality Report 2026
Serving 33,975 people · Connecticut
Water Source
Surface Water
County
—
System ID
CT0608011
Violations
287
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2015.
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 - SHORELINE REGION-GUILFORD SYSTEM
Is CTWC - SHORELINE REGION-GUILFORD SYSTEM water safe to drink?
CTWC - SHORELINE REGION-GUILFORD SYSTEM water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 287 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CTWC - SHORELINE REGION-GUILFORD SYSTEM detected?
69 contaminants were tested in CTWC - SHORELINE REGION-GUILFORD SYSTEM's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CTWC - SHORELINE REGION-GUILFORD SYSTEM have any EPA violations?
Yes, CTWC - SHORELINE REGION-GUILFORD SYSTEM has 287 EPA violation(s) on record, with the most recent in 2015. Violation types include MR.
How many people does CTWC - SHORELINE REGION-GUILFORD SYSTEM serve?
CTWC - SHORELINE REGION-GUILFORD SYSTEM serves approximately 33,975 people, Connecticut. The system provides water to 5 communities: Clinton, Guilford, Madison, Old Saybrook, Westbrook.
What type of water does CTWC - SHORELINE REGION-GUILFORD SYSTEM provide?
CTWC - SHORELINE REGION-GUILFORD 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 CT0608011.
How does CTWC - SHORELINE REGION-GUILFORD SYSTEM compare to other utilities in Connecticut?
CTWC - SHORELINE REGION-GUILFORD 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.