LeadPipeLookup

State overview

Lead service lines in Connecticut

Aggregated lead pipe inventory data for all 2,297 public water systems in Connecticut, serving approximately 2,886,763 residents.

Last verified from EPA SDWIS: 2026-04-14
Water systems
2,297
Population served
2,886,763
Known lead lines
0
Unknown material
0

Lead Service Lines in Connecticut

Connecticut supplies water to about 2.9 million people across 2,297 water systems. The state has not yet reported known lead service lines in its inventory data—though that doesn't mean they don't exist. Most Connecticut systems are still completing their required lead service line surveys, which utilities must finish by 2024.

Why this matters

Lead service lines are pipes that connect the water main under the street to your home. If your line is lead, drinking water can pick up lead as it travels through the pipe, especially in older homes or if water sits overnight. Even small amounts of lead exposure can affect children's development.

Connecticut's larger utilities—including the Regional Water Authority (serving 419,000 people), Metropolitan District Commission (391,000 people), and Aquarion systems (serving over 470,000 combined)—are required to map their service lines and share findings with customers.

What Connecticut systems must do

Under the 2021 Infrastructure Investment and Jobs Act, all US water systems must complete a full inventory of lead and galvanized service lines by October 2024. Connecticut utilities are working toward this deadline. Some may have preliminary data available; others are still surveying customers and property records.

The inventory requirement is the first step. Once utilities know where lead lines exist, they can:

  • Notify affected customers
  • Recommend testing or flushing
  • Plan replacement programs
  • Share corrosion control information

Connecticut has not received federal bipartisan infrastructure funding for lead line replacement yet, though utilities can apply for grants.

Find your water system

The six largest utilities in the state are listed above. Your utility depends on where you live. Contact your local water company directly—they can tell you:

  • Whether your home has a lead service line
  • Water quality test results for your address
  • Free or low-cost testing programs
  • Replacement assistance, if available

Utilities are required to keep this information updated and provide it on request.

Next steps for residents

  • Contact your water utility and ask if your service line is lead or galvanized. Provide your street address.
  • Request a water test if your utility hasn't tested your tap water yet, especially if you have young children or are pregnant.
  • Check the CDC website for guidance on reducing lead exposure while you investigate your line.
  • Ask about replacement programs—some utilities offer free or subsidized lead line removal.

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Largest public water systems in Connecticut

UtilityPWSIDPopulationKnown leadUnknown
Mashantucket Pequot Water System010106001———
Mohegan Tribal Utility Authority010109005———
REGIONAL WATER AUTHORITYCT0930011418,900——
METROPOLITAN DISTRICT COMMISSIONCT0640011390,887——
AQUARION-EASTERN FAIRFIELD COUNTYCT0150011351,756——
AQUARION-STAMFORDCT1350011119,214——
WATERBURY WATER DEPARTMENTCT1510011107,271——
CTWC - NORTHERN REG-WESTERN SYSTEMCT0473011101,313——
NEW BRITAIN WATER DEPARTMENTCT089001173,534——
DANBURY WATER DEPARTMENTCT034001162,055——
MERIDEN WATER DIVISIONCT080001158,441——
AQUARION-GREENWICHCT057001153,297——
BRISTOL WATER DEPARTMENTCT017001152,079——
MANCHESTER WATER DEPARTMENTCT077002151,198——
SOUTHINGTON WATER DEPARTMENTCT131001143,069——
SOUTH NORWALK ELECTRIC & WATERCT103002142,000——
MIDDLETOWN WATER DEPARTMENTCT083001141,019——
NORWALK FIRST TAXING DISTRICTCT103001140,256——
TORRINGTON WATER COMPANYCT143001137,915——
WALLINGFORD WATER DEPARTMENTCT148001137,267——
NORWICH PUBLIC UTILITIESCT104001136,163——
CTWC - SHORELINE REGION-GUILFORD SYSTEMCT060801133,975——
GROTON UTILITIESCT059001130,200——
NEW LONDON DEPT. OF PUBLIC UTILITIESCT095001127,620——
UNIVERSITY OF CONNECTICUT - MAIN CAMPUSCT078002127,199——

Cities in Connecticut

More on lead pipes in Connecticut

Frequently asked about lead pipes in Connecticut

Does Connecticut have lead in the water?

Lead in drinking water comes from lead service lines and fixtures, not from the treatment plant. Connecticut utilities are currently mapping where lead lines exist. Contact your local water company to find out if your home has a lead service line.

How do I know if my house has a lead service line in Connecticut?

Call your water utility with your street address. They can check property records and their own maps. Many utilities also offer free home inspections to identify lead lines. Utilities must share this information with you by law.

Is it safe to drink water from a lead service line?

It depends on several factors, including water pH, corrosion control measures, and how long water sits in the pipe. The safest approach is to assume risk if you have a lead line and take steps like flushing or testing. Talk to your pediatrician about drinking water if you have young children.

Will Connecticut pay to remove lead pipes from my house?

Some Connecticut utilities have replacement assistance programs or have applied for state and federal grants. Contact your water company to ask what programs are available in your area.