Massachusetts · population 42,169
Lead pipes in Marlborough, MA
313 lead or galvanized lines to replace
Most of Marlborough (population 42,169) gets its water from Marlborough DPW Water Div. (Mwra). That system reported 268 lead and 45 galvanized-requiring-replacement service lines out of 11,069, with 1,503 more of unknown material.
2.8% of Marlborough DPW Water Div. (Mwra)'s service lines are lead or galvanized requiring replacement, higher than the Massachusetts average (2.2%) and about the same as the national average (3.1%).
- Lead 2.4%
- Galvanized (replace) 0.4%
- Unknown 14%
- Non-lead 84%
Latest lead test for Marlborough DPW Water Div. (Mwra) (2026): 1.2 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 for Marlborough DPW Water Div. (Mwra).
Water systems serving Marlborough
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Marlborough DPW Water Div. (Mwra)Main system | 268 | 45 | 1,503 | 2.8% |
| Southborough DPW Water Division (Mwra)Serves nearby areas | 0 | 0 | 105 | 0% |
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 Marlborough
The counts above cover the whole water system. To see whether your line is lead, look up your address on Marlborough DPW Water Div. (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
- Framingham60 lead + galv. lines
- Worcester946 unknown
- Walthamno lead reported
- Leominster78 lead + galv. lines
- Newton287 lead + galv. lines
- Watertown21 lead + galv. lines
- Franklin357 lead + galv. lines
- Cambridge2,195 lead + galv. lines
Check another water system
Questions
Does Marlborough, MA have lead pipes?
Yes. Marlborough DPW Water Div. (Mwra), which serves Marlborough, reported 268 lead and 45 galvanized-requiring-replacement service lines, plus 1,503 of unknown material.
Who supplies water to Marlborough?
EPA's service area maps place most of Marlborough in Marlborough DPW Water Div. (Mwra)'s service area (PWSID MA2170000). Southborough DPW Water Division (Mwra) also serves parts of the city or nearby areas.
How do I check whether my Marlborough home has a lead service line?
Search your address on Marlborough DPW Water Div. (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 Marlborough 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 Marlborough DPW Water Div. (Mwra) whether your street is scheduled and whether it covers the private side.