Massachusetts · population 82,149
Lead pipes in Somerville, MA
101 lead or galvanized lines to replace
Most of Somerville (population 82,149) gets its water from Somerville Water Dept. (Mwra). That system reported 101 lead and 0 galvanized-requiring-replacement service lines out of 15,109, with 50 more of unknown material.
0.7% of Somerville Water Dept. (Mwra)'s service lines are lead or galvanized requiring replacement, lower than the Massachusetts average (2.2%) and lower than the national average (3.1%).
- Lead 0.7%
- Galvanized (replace) 0%
- Unknown 0.3%
- Non-lead 99%
Latest lead test for Somerville Water Dept. (Mwra) (2025): 3.9 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists 2 Lead and Copper Rule violations since 2015, 1 health-based, 2 still open for Somerville Water Dept. (Mwra).
Water systems serving Somerville
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Somerville Water Dept. (Mwra)Main system | 101 | 0 | 50 | 0.7% |
| Medford Water Dept. (Mwra)Serves nearby areas | 5,128 | 2 | 4,657 | 35% |
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 Somerville
The counts above cover the whole water system. To see whether your line is lead, look up your address on Somerville Water Dept. (Mwra)'s official inventory. Utilities had to make these public by October 16, 2024.
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.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
Check another water system
Questions
Does Somerville, MA have lead pipes?
Yes. Somerville Water Dept. (Mwra), which serves Somerville, reported 101 lead and 0 galvanized-requiring-replacement service lines, plus 50 of unknown material.
Who supplies water to Somerville?
EPA's service area maps place most of Somerville in Somerville Water Dept. (Mwra)'s service area (PWSID MA3274000). Medford Water Dept. (Mwra) also serves parts of the city or nearby areas.
How do I check whether my Somerville home has a lead service line?
Search your address on Somerville Water Dept. (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 Somerville 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 Somerville Water Dept. (Mwra) whether your street is scheduled and whether it covers the private side.