Lead Pipe Map

Massachusetts · population 18,739

Lead pipes in Winthrop, MA

539 lead or galvanized lines to replace

Most of Winthrop (population 18,739) gets its water from Winthrop Water Division, (Mwra). That system reported 539 lead and 0 galvanized-requiring-replacement service lines out of 4,541, with 0 more of unknown material.

12% of Winthrop Water Division, (Mwra)'s service lines are lead or galvanized requiring replacement, higher than the Massachusetts average (2.2%) and higher than the national average (3.1%).

539Lead
0Galvanized, replace
0Unknown material
4,002Non-lead

Latest lead test for Winthrop Water Division, (Mwra) (2025): 8.3 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.

Compliance record: EPA lists 1 Lead and Copper Rule violation since 2015, 1 still open for Winthrop Water Division, (Mwra).

Water systems serving Winthrop

Water systemLeadGalv.Unknown% lead
Winthrop Water Division, (Mwra)Main system5390012%
Boston Water and Sewer Commission (Mwra)Serves nearby areas2,1842654,1802.5%

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 Winthrop

The counts above cover the whole water system. To see whether your line is lead, look up your address on Winthrop Water Division, (Mwra)'s official inventory. Utilities had to make these public by October 16, 2024.

Find the official inventory mapWinthrop Water Division, (Mwra) 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 Winthrop, MA have lead pipes?

Yes. Winthrop Water Division, (Mwra), which serves Winthrop, reported 539 lead and 0 galvanized-requiring-replacement service lines, plus 0 of unknown material.

Who supplies water to Winthrop?

EPA's service area maps place most of Winthrop in Winthrop Water Division, (Mwra)'s service area (PWSID MA3346000). Boston Water and Sewer Commission (Mwra) also serves parts of the city or nearby areas.

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

Search your address on Winthrop Water Division, (Mwra)'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 Winthrop 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 Winthrop Water Division, (Mwra) whether your street is scheduled and whether it covers the private side.