State guide
Connecticut
Connecticut’s drinking water program is run by the Department of Public Health Drinking Water Section, which has a dedicated Lead and Copper Rule page and statewide service-line inventory guidance. Utility responsibility is not set out on one single statewide homeowner page, but major Connecticut utilities consistently place utility ownership from the main to the curb valve/curb stop, with the owner responsible from there into the building.
Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.
- Who usually owns the water service line
- Usually yes: official pages for Connecticut Water, Aquarion, RWA, and MDC place utility responsibility from the main to the curb valve/curb stop or property line, with the owner responsible from there to the house.
- State drinking water program
- Connecticut Department of Public Health, Drinking Water Section
- State lead service line page
- Official page →
- Permits for repair or replacement
- No single statewide homeowner permit page was found on CT DPH’s lead pages; utility pages say local or utility approvals apply, and Aquarion says owners are responsible for all required local and state permits.
- Assistance programs
- No statewide private-side lead replacement program page was found; local help found includes MDC replacing lead services at MDC expense and Connecticut Water’s optional Linebacker service-line repair plan.
Official resources in Connecticut
State lead and copper page with inventory templates, notifications, and service-line material guidance.
Official utility rules that define the company-owned and customer-owned parts of a service connection.
Official MDC guide explaining public-right-of-way versus private-property responsibility.
Key facts for Connecticut
- DPH asks public water systems to submit LCRR service-line material inventories to DPH.LeadandCopper@ct.gov.
- Connecticut Water says it owns the service line from the water main to the curb valve.
- Connecticut Water says the customer furnishes, owns, and maintains the pipe from the curb stop to the building interior.
- RWA says it maintains the pipe from the water main to the curb valve in front of the home.
- RWA says the homeowner is responsible for the curb box and the service line between the curb box and the building.
- MDC says it fixes failures in the public right-of-way, while the property owner repairs failures on private property.
Utility water service line rules in Connecticut
| Utility | city | phone | Details |
|---|---|---|---|
| Connecticut Department of Public Health - Drinking Water Section Hartford County | Hartford | (860) 509-7333 | State drinking water program; main contact for Drinking Water Section and Lead and Copper Rule questions. |
| Connecticut Water Customer Service Middlesex County | Clinton | 1.800.286.5700 | Customer service and 24 hour emergency service; Connecticut Water also publishes ownership rules and an optional Linebacker repair plan. |
| Aquarion Water Customer Service Fairfield County | Monroe | 1-800-732-9678 | Customer service for Aquarion customers; Aquarion’s Connecticut new-service FAQ assigns private-side ownership and permit duties to the owner. |
| Regional Water Authority Customer Care New Haven County | New Haven | 203-562-4020 | Customer care and water-service emergency contact; RWA publishes a homeowner responsibility diagram. |
| The MDC Utility Services Hartford County | Hartford | (860) 278-7850 ext. 3780 | Handles permits, water and sewer connections, construction specifications, and inspections for MDC service work. |
* Not published: the official page doesn't list it. Call the office to confirm before you rely on it.
What to do next
- Check your specific utility’s ownership diagram before authorizing excavation; Connecticut utilities do not all describe the split with the same landmark.
- If you are replacing private-side service in MDC territory, contact MDC Utility Services before digging to confirm permits and inspections.
- Ask your utility whether it has already classified your service line material under the LCRR inventory before paying for exploratory work.
Not seeing your utility or county?
We list a utility only when an official government page publishes its rules. If yours isn't in the table above, it may not publish them online yet. Here's what to use instead, in order:
- General Start with the statewide information above. It applies across Connecticut, but cities and counties can add their own steps, fees or deadlines.
- Closest verified Nearest places where we have verified local data outside this state (distance from Connecticut's population center, for comparison only):
- Worcester DPW Water Operations, Massachusetts · about 75 miles
- NYC DEP Bureau of Customer Service, New York · about 81 miles
- DEP Service Line Protection Program, New York · about 81 miles
- Call to confirm Ask the official office. They have the current local rule, fee and form.Connecticut DPH Lead and Copper Rule
Website →Phone not shown: use the contact page on the official website above.Your city or county office: Local governments →Not sure who handles it locally? USAGov's free help line, 1-844-872-4681, or the Connecticut page on USA.gov can point you to the right office. - Know the current info? Tell us and include a link to the official page. We check every tip before it goes up.
Helpful guides
- Who is responsible for the water line to your house?
- The curb stop, meter and property line, explained
- Water line leak in your yard: what to do
- Water service line replacement costs
Water line responsibility check →