Mattapoisett, MA · PWSID MA4173001
Mattapoisett River Valley W.D. lead service lines
No inventory counts on file
Mattapoisett River Valley W.D. serves about 29,600 people in Mattapoisett, MA, but EPA's EPA SDWIS service line inventory, 2026 Q3 data has no service line counts for it. That doesn't mean the system has no lead. Ask the utility for its inventory, or check your own pipe with the steps below.
Lead rule violations
EPA's data lists no Lead and Copper Rule violations for Mattapoisett River Valley W.D. since 2015. That covers testing, reporting, corrosion control and public notice requirements; it isn't a guarantee about any individual home.
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Mattapoisett River Valley W.D.'s main water source is purchased groundwater. It buys treated water from Fairhaven Water Dept, Mattapoisett Water Department, Marion Water Division. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while Mattapoisett River Valley W.D. is responsible for its own service line inventory and replacement program. It sells water to 2 other water systems: Fairhaven Water Dept, Mattapoisett Water Department.
Source: EPA SDWIS water system and facility records.
Check your own address
These counts cover the whole system. To see whether your line is lead, use the utility's address-level inventory. Utilities had to prepare one by October 16, 2024 and make it publicly accessible; systems serving more than 50,000 people must post it online.
No map yet? Do the 2-minute scratch and magnet test on the pipe where water enters your home.
Protect your drinking water now
If your line is lead, galvanized or unknown, filter water for drinking, cooking and baby formula. Use a filter certified to NSF/ANSI 53 for lead. Run cold water for a few minutes after it sits for hours, and never use hot tap water for cooking.
How to pick a lead-certified filter · How to test your water for lead
Getting the line replaced
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Mattapoisett River Valley W.D. whether it replaces the private side for free or with a cost share before you hire anyone. If you want it done sooner, or your utility doesn't cover your side, a licensed plumber can quote it. What replacement costs.
County pages: Lead pipes in Plymouth County
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Brockton Water Department | 650 | 7,971 |
| Plymouth Water Department | 231 | 2,391 |
| Weir River Water System | 58 | 3,975 |
| Marshfield Water Department | 27 | 6,005 |
| Bridgewater Water Department | 103 | 1,448 |
| Middleborough Water Supply | 7 | 1,390 |
| Kingston Water Department | 18 | 0 |
| Hanson Water Department | 18 | 3,162 |
Check another water system
Questions
Does Mattapoisett River Valley W.D. have lead pipes?
Mattapoisett River Valley W.D. has not reported service line counts in EPA's data. Ask the utility for its lead service line inventory, which it was required to prepare by October 16, 2024.
How do I check if my home's service line is lead?
Look up your address on Mattapoisett River Valley W.D.'s official service line inventory, which utilities must make publicly available. You can also scratch the pipe where it enters your home: lead is soft, dull gray, scratches to shiny silver and does not attract a magnet.
When will Mattapoisett River Valley W.D. replace lead service lines?
Under EPA's Lead and Copper Rule Improvements, most systems must replace lead and galvanized-requiring-replacement lines by December 31, 2037, starting from November 1, 2027. The rule is being challenged in court, so dates could change. Many utilities run free or cost-share programs now.
Has Mattapoisett River Valley W.D. had lead violations?
EPA's data shows no Lead and Copper Rule violations since 2015 for Mattapoisett River Valley W.D..
Which water filters remove lead?
Use a filter certified to NSF/ANSI Standard 53 for lead reduction, or NSF/ANSI 58 for reverse osmosis. Check the certification on NSF's listings, not just the box.
Embed or cite this data
Local news sites, blogs and community groups can embed this card. It updates when EPA releases new data.
Citation: Lead Pipe Map, "Mattapoisett River Valley W.D. lead service lines," https://leadpipemap.com/ma/mattapoisett-river-valley-w-d/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.