Worcester County, Massachusetts — public water systems

346 active public water systems serve Worcester County, reporting 774.9K people served.

Dataset updated July 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

346

Population served

774.9K

Community systems

110

Groundwater share

91%

Water systems in Worcester County

Active public water systems in Worcester County, Massachusetts
#	Water system	County	Population served	Type	Source
1	Worcester Dpwp, Water Supply Division	Worcester	206,518	Community	Surface water
2	Fitchburg Dpw Division of Water Supply	Worcester	41,946	Community	Surface water
3	Leominster Water Division	Worcester	41,683	Community	Surface water
4	Shrewsbury Water Department	Worcester	38,325	Community	Groundwater
5	Milford Water Department	Worcester	30,379	Community	Surface water
6	Westborough Water Department	Worcester	21,567	Community	Surface water
7	Gardner Water Department	Worcester	21,287	Community	Surface water
8	Southbridge Water Department	Worcester	19,180	Community	Surface water
9	Holden Water Division, Dpw	Worcester	17,951	Community	Purchased surface water
10	Webster Water Department	Worcester	17,776	Community	Groundwater
11	Clinton Water Dept	Worcester	15,530	Community	Surface water
12	Northborough Water Department (MWRA)	Worcester	13,535	Community	Purchased surface water
13	Auburn Water District	Worcester	12,255	Community	Purchased surface water
14	Uxbridge Dpw, Water Division	Worcester	11,525	Community	Groundwater
15	Ash/Win Joint Water Authority	Worcester	11,394	Community	Surface water
16	Aquarion Water Company, Millbury	Worcester	11,326	Community	Purchased surface water
17	Grafton Water District	Worcester	10,925	Community	Groundwater
18	Athol Dpw Water Division	Worcester	10,587	Community	Groundwater
19	Southborough Dpw Water Division (MWRA)	Worcester	10,514	Community	Purchased surface water
20	Blackstone Water Department	Worcester	9,868	Community	Groundwater
21	Whitinsville Water Company	Worcester	7,933	Community	Groundwater under influence of surface water
22	Northbridge Water Division	Worcester	7,889	Community	Purchased groundwater under influence
23	Aquarion Water Company Oxford	Worcester	7,343	Community	Groundwater
24	Lunenburg Water District	Worcester	7,219	Community	Groundwater
25	West Boylston Water District	Worcester	7,132	Community	Purchased surface water
26	Spencer Water Department	Worcester	7,037	Community	Groundwater
27	Sterling Water Department	Worcester	6,754	Community	Groundwater
28	Templeton Munic. Light and Water Plant	Worcester	6,152	Community	Groundwater
29	Hopedale Water Department	Worcester	6,017	Community	Purchased surface water
30	Lancaster Water Department	Worcester	6,000	Community	Groundwater
31	Winchendon Water Department	Worcester	5,706	Community	Purchased surface water
32	Rutland Water Department	Worcester	5,605	Community	Surface water
33	Dudley Water Department	Worcester	5,515	Community	Groundwater
34	Sturbridge Water Department	Worcester	4,567	Community	Groundwater under influence of surface water
35	Upton Dpw Water/Wastewater Division	Worcester	4,420	Community	Groundwater
36	Douglas Water Department	Worcester	4,400	Community	Groundwater
37	Paxton Water Department	Worcester	4,300	Community	Purchased surface water
38	Barre Water Department	Worcester	4,098	Community	Groundwater
39	North Brookfield Water Department	Worcester	3,903	Community	Surface water
40	Westminster Department of Public Works	Worcester	3,741	Community	Purchased surface water
41	Cherry Valley/ Rochdale Water District	Worcester	3,696	Community	Purchased surface water
42	Ashburnham Water Department	Worcester	3,680	Community	Purchased surface water
43	Boylston Water District	Worcester	3,343	Community	Groundwater
44	South Grafton Water District	Worcester	3,262	Community	Groundwater under influence of surface water
45	West Brookfield Water Department	Worcester	3,217	Community	Groundwater
46	Leicester Water Supply District	Worcester	3,200	Community	Purchased surface water
47	Pilot Travel Center	Worcester	3,000	Non-transient non-community	Groundwater
48	Wilkinsonville Water District	Worcester	2,773	Community	Groundwater
49	Wachusett Mountain Ski Area	Worcester	2,500	Non-transient non-community	Groundwater
50	Warren Water District	Worcester	2,289	Community	Groundwater