Lead Pipe Map

Massachusetts · population 35,985

Lead pipes in Watertown, MA

21 lead or galvanized lines to replace

Most of Watertown (population 35,985) gets its water from Watertown Department of Public Works. That system reported 21 lead and 0 galvanized-requiring-replacement service lines out of 7,662, with 0 more of unknown material.

0.3% of Watertown Department of Public Works's service lines are lead or galvanized requiring replacement, lower than the Massachusetts average (2.2%) and lower than the national average (3.1%).

21Lead
0Galvanized, replace
0Unknown material
7,641Non-lead

Latest lead test for Watertown Department of Public Works (2025): 1.1 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.

Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Watertown Department of Public Works.

Water systems serving Watertown

Water systemLeadGalv.Unknown% lead
Watertown Department of Public WorksMain system21000.3%
Newton Water Dept. (Mwra)Serves nearby areas3284771.2%

Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.

Check your address in Watertown

The counts above cover the whole water system. To see whether your line is lead, look up your address on Watertown Department of Public Works's official inventory. Utilities had to make these public by October 16, 2024.

Find the official inventory mapWatertown Department of Public Works details

No map yet? Do the 2-minute scratch and magnet test.

Protect your drinking water

If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.

Pitcher filtersCheapest start. Pick one certified to NSF/ANSI 53 for lead, such as Brita Elite, PUR Plus or ZeroWater.See pitchers Faucet-mount filtersFilters straight from the tap. Look for NSF/ANSI 53 lead reduction on the box.See faucet filters Under-sink systemsBest for families. Carbon block (NSF 53) or reverse osmosis (NSF 58) units rated for lead.See under-sink

Choosing a lead-certified filter · Testing your water · Replacement cost

Nearby cities

Check another water system

Questions

Does Watertown, MA have lead pipes?

Yes. Watertown Department of Public Works, which serves Watertown, reported 21 lead and 0 galvanized-requiring-replacement service lines, plus 0 of unknown material.

Who supplies water to Watertown?

EPA's service area maps place most of Watertown in Watertown Department of Public Works's service area (PWSID MA3314000). Newton Water Dept. (Mwra) also serves parts of the city or nearby areas.

How do I check whether my Watertown home has a lead service line?

Search your address on Watertown Department of Public Works's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.

When will lead pipes in Watertown be replaced?

EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Watertown Department of Public Works whether your street is scheduled and whether it covers the private side.