Connecticut Water Quality
Drinking water data for all 9 counties.
Avg Water Score
N/A
State Grade
N/A
Counties with Data
0
of 9 total
All Connecticut Counties
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Frequently Asked Questions
Which county in Connecticut has the best water quality?
See the county rankings below for water quality across Connecticut.
Which county in Connecticut has the most water violations?
See the county rankings below for water violation data across Connecticut.
Is the tap water safe to drink in Connecticut?
Water quality data for Connecticut counties is available in the table below. Always check your local water utility's consumer confidence report for the most current data.
What contaminants are found in Connecticut water supplies?
Drinking water quality varies by county and water system. The EPA Safe Drinking Water Information System (SDWIS) tracks violations for contaminants like lead, nitrates, bacteria, and disinfection byproducts. See individual county pages for specific contaminant and violation history.
Data Source
Water quality data sourced from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.
Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.