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Lead service lines in Chelsea, MA

3 water utilities serve Chelsea, with approximately 2,698,669 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
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Galvanized
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Lead Service Lines in Chelsea, MA

What you need to know

Chelsea's water comes from three systems, serving about 2.7 million people across the region. The largest is the MWRA (Massachusetts Water Resources Authority), which supplies water to Chelsea Water Department and the broader metro area.

Lead service lines are pipes made of lead that connect the water main in the street to your home. Lead can leach into drinking water, especially if water sits in pipes overnight or if the water is corrosive. Even small amounts of lead exposure can affect children's development.

Lead inventory data in Chelsea

The water systems serving Chelsea have not yet reported confirmed counts of lead service lines to the state. This doesn't mean there are no lead lines—it means the inventory work is still underway or data isn't publicly available yet.

All water systems in Massachusetts are required to complete a full inventory of lead service lines by 2025 as part of federal Safe Drinking Water Act rules. Chelsea's utilities are working toward this deadline.

What to do about your home

If your home was built before 1986, there's a higher chance your service line contains lead or lead-bearing materials. The best way to know is to:

1. Contact your water utility and ask if they have records showing what material your service line is made of. 2. Have your water tested if you're concerned. A simple test costs $15–50 and takes a few days. Your utility can direct you to certified labs. 3. Use cold water for drinking and cooking until you know more. Hot water leaches lead faster than cold. 4. Flush your pipes in the morning before using water, especially if it's been sitting overnight.

If testing shows lead, you have options: install a water filter, replace the service line, or use bottled water. Your water utility can discuss costs and help you understand your choices.

Next steps for residents

  • Contact Chelsea Water Department or MWRA to ask if they have your home's service line material on file
  • Request a free or low-cost water test through your utility
  • If you have young children or are pregnant, talk to your doctor about lead testing

Utilities serving Chelsea

Common questions

Does Chelsea have lead in the water?

Chelsea's water systems haven't yet reported their full lead service line inventories. Lead levels in treated water are typically low, but if you have a lead service line, some leaching can occur. Testing your tap water is the most direct way to know if lead is present in your home.

How do I find out if my house has a lead service line?

Call the Chelsea Water Department or MWRA and ask if they have records of your service line material. If they don't have records, a plumber can inspect the line where it enters your house. Homes built before 1986 are more likely to have lead lines.

Is lead water dangerous for kids?

Lead exposure can affect children's brain development and learning. For health guidance specific to your child, talk to your pediatrician or call the CDC. The sooner you test your water and take steps to reduce exposure, the better.

How much does it cost to replace a lead service line?

Replacement costs vary widely ($1,500–$5,000 or more depending on depth and soil) but some utilities offer rebates or financing. Ask your water utility about assistance programs or low-interest loans that may be available in your area.