Tap Truth EPA drinking water records, in plain English

County drinking water records

Barnstable County, MA drinking water systems

28 community water systems serve Barnstable County, MA, reporting 551,446 people served in all. A system that also serves other counties counts all of its customers here.

4 of them (14%) had at least one health-based violation in the last 10 years. 1 system still has one unresolved.

27 rely mainly on groundwater and 1 on surface water, counting water bought from other systems.

27 systems filed a lead service line inventory listing 5 lead lines, 148 galvanized lines that must be replaced and 19,682 lines of unknown material.

2 more systems are placed in Barnstable County, MA by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
28
People served, sum of each system's own figure
551,446
Systems with a health-based violation, last 10 years
4
Systems with one unresolved
1
Lead service lines in inventories
5

Water systems serving Barnstable County

28 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Falmouth Water Dept East Falmouth, North Falmouth and 4 more and land outside them 97,551 Surface water 2 0 5
Dennis Water District Dennis, East Dennis and 3 more 65,000 Groundwater 0 0 0
Centerville Osterville Marstons Mills WD Barnstable Town 50,000 Groundwater 0 0 0
Harwich Water Department East Harwich, Northwest Harwich and 2 more 39,144 Groundwater 0 0 0
Yarmouth Water Department South Yarmouth, West Yarmouth and 1 more 38,900 Groundwater 1 0 0
Mashpee Water District New Seabury, Mashpee Neck and 4 more and land outside them 36,922 Groundwater 0 0 0
Hyannis Water System, Town of Barnstable Barnstable Town 35,000 Groundwater 0 0 0
Brewster Water Department Brewster and land outside it 35,000 Groundwater 0 0 0
Chatham Water Department West Chatham and Chatham and land outside them 30,000 Groundwater 0 0 0
Sandwich Water District Forestdale, East Sandwich and 1 more 23,000 Groundwater 0 0 0
Bourne Water District Pocasset, Monument Beach and 2 more 22,500 Groundwater 0 0 0
Provincetown Water Department Provincetown and land outside it 22,250 Groundwater 0 0 0
Orleans Water Department Orleans and land outside it 18,921 Groundwater 0 0 0
Buzzards Bay Water District Buzzards Bay 7,700 Groundwater 0 0 0
Town of Eastham North Eastham and land outside it 6,199 Groundwater 0 0 0
Otis Air National Guard Base Outside cities and towns 6,000 Groundwater 2 2 No inventory
Barnstable Fire District Barnstable Town 5,400 Groundwater 0 0 0
Cotuit Fire District Water Department Barnstable Town 4,938 Groundwater 0 0 0
North Sagamore Water District Sagamore 4,668 Groundwater 0 0 0
Wellfleet Municipal Water System Outside cities and towns 750 Groundwater 1 0 0
Barnstable County Jail Outside cities and towns 600 Purchased groundwater 0 0 0
Sea Oaks Condominiums Outside cities and towns 222 Groundwater 0 0 0
Pleasant Water Outside cities and towns 200 Groundwater 0 0 0
Harborside Village Outside cities and towns 165 Groundwater 0 0 0
Schooner Pass Trustees Condominiums Outside cities and towns 136 Purchased groundwater 0 0 0
Massasoit Hills Trailer Park Outside cities and towns 120 Groundwater 0 0 0
Beechwood Point Condos Outside cities and towns 112 Groundwater 0 0 0
Wellfleet Apartments Outside cities and towns 48 Groundwater 0 0 0

Systems placed by county record in Barnstable County

2 systems

EPA has no service area map for these systems. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Upper Cape Regional Water Cooperative County on record 56,250 Groundwater 0 0 0
Stones Throw Condos County on record 80 Groundwater 0 0 0

Cities and towns in Barnstable County

39 places

Back to Massachusetts

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations