Massachusetts · population 49,831
Lead pipes in Barnstable, MA
No lead lines reported
Most of Barnstable (population 49,831) gets its water from Centerville Osterville Marstons Mills WD, which reported 12,436 service lines and no lead, galvanized or unknown lines.
0% of Centerville Osterville Marstons Mills WD'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%
- Galvanized (replace) 0%
- Unknown 0%
- Non-lead 100%
Latest lead test for Centerville Osterville Marstons Mills WD (Jan 2026–Jun 2026): 1.8 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 Centerville Osterville Marstons Mills WD.
Water systems serving Barnstable
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Centerville Osterville Marstons Mills WDMain system | 0 | 0 | 0 | 0% |
| Hyannis Water System, Town of BarnstableAlso serves parts of the city | 0 | 87 | 2,414 | 1.1% |
| Cotuit Fire District Water DepartmentAlso serves parts of the city | 0 | 3 | 30 | 0.1% |
| Barnstable Fire DistrictAlso serves parts of the city | 0 | 0 | 0 | 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 Barnstable
The counts above cover the whole water system. To see whether your line is lead, look up your address on Centerville Osterville Marstons Mills WD'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
- New Bedford5,676 lead + galv. lines
- Fall River923 lead + galv. lines
- Bridgewater103 lead + galv. lines
- Taunton18 lead + galv. lines
- Brockton650 lead + galv. lines
- Weymouth48 lead + galv. lines
- Braintree3,488 lead + galv. lines
- Randolph8 lead + galv. lines
Check another water system
Questions
Does Barnstable, MA have lead pipes?
Centerville Osterville Marstons Mills WD, which serves Barnstable, reported no lead, galvanized or unknown service lines.
Who supplies water to Barnstable?
EPA's service area maps place most of Barnstable in Centerville Osterville Marstons Mills WD's service area (PWSID MA4020002). Hyannis Water System, Town of Barnstable, Cotuit Fire District Water Department, Barnstable Fire District also serve parts of the city or nearby areas.
How do I check whether my Barnstable home has a lead service line?
Search your address on Centerville Osterville Marstons Mills WD'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 Barnstable 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 Centerville Osterville Marstons Mills WD whether your street is scheduled and whether it covers the private side.