Connecticut Septic & Well Water Rules

In Connecticut, local health departments and districts permit and inspect septic systems, and the Department of Public Health (DPH) oversees larger systems and exceptions.

This is a short state page. It covers only the facts we've verified from official sources so far.

Septic & wells

Contact your local health department or district for septic permits and inspections.
A septic system generally must be at least 75 feet from a well. Closer placement needs a DPH-approved separation distance exception.

Frequently asked questions

Who permits septic systems in Connecticut?

Your local health department or health district. DPH handles larger systems and exceptions.

Sources

CT DPH: Subsurface Sewage Disposal Systems

Last checked: October 21, 2026