Connecticut

Connecticut drinking water quality

Every public water system in Connecticut we've verified. Each report covers one calendar year and shows the utility's own measured contaminant levels against federal limits.

• Ansonia (2024)
  28 contaminants measured· 2 at or above the limit
• Bethany (2024)
  28 contaminants measured· 2 at or above the limit
• Branford (2024)
  28 contaminants measured· 2 at or above the limit
• Bridgeport (2024)
  18 contaminants measured· 1 at or above the limit
• Cheshire (2024)
  28 contaminants measured· 2 at or above the limit
• Derby (2024)
  28 contaminants measured· 2 at or above the limit
• East Haven (2024)
  28 contaminants measured· 2 at or above the limit
• Hamden (2024)
  28 contaminants measured· 2 at or above the limit
• Hartford (2024)
  17 contaminants measured· 1 at or above the limit
• Milford (2024)
  28 contaminants measured· 2 at or above the limit
• New Haven (2024)
  28 contaminants measured· 2 at or above the limit
• North Haven (2024)
  28 contaminants measured· 2 at or above the limit
• Orange (2024)
  28 contaminants measured· 2 at or above the limit
• Seymour (2024)
  28 contaminants measured· 2 at or above the limit
• Stamford (2024)
  21 contaminants measured· 1 at or above the limit
• West Haven (2024)
  28 contaminants measured· 2 at or above the limit
• Woodbridge (2024)
  28 contaminants measured· 2 at or above the limit