Merrimack County, New Hampshire — public water systems

244 active public water systems serve Merrimack County, reporting 124.2K people served.

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

Active systems

244

Population served

124.2K

Community systems

Groundwater share

97.5%

Water systems in Merrimack County

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Active public water systems in Merrimack County, New Hampshire
#	Water system	County	Population served	Type	Source
1	Concord Water Dept	Merrimack	44,215	Community	Surface water
2	Franklin Water Works	Merrimack	7,200	Community	Groundwater
3	Pembroke Water Works	Merrimack	5,200	Community	Groundwater
4	Central Hooksett Water Pct	Merrimack	4,650	Community	Purchased surface water
5	Penacook Boscawen Water Pct	Merrimack	3,800	Community	Groundwater
6	New London Springfield Water	Merrimack	3,250	Community	Groundwater
7	Cogswell Springs Water Works	Merrimack	3,000	Community	Groundwater
8	Hooksett Village Water Pct	Merrimack	3,000	Community	Groundwater
9	Tilton Northfield Water Dist	Merrimack	2,500	Community	Groundwater
10	Nh Motor Speedway	Merrimack	2,300	Transient non-community	Groundwater
11	Pittsfield Aqueduct	Merrimack	1,625	Community	Surface water
12	Contoocook Village Pct	Merrimack	1,600	Community	Surface water
13	Rapid Refill 135	Merrimack	999	Transient non-community	Groundwater
14	Wendys/Dunkin Donuts	Merrimack	999	Transient non-community	Groundwater
15	Canterbury Rest Area	Merrimack	999	Transient non-community	Groundwater
16	Sutton Rest Area	Merrimack	999	Transient non-community	Groundwater
17	Mt Sunapee Ski Area/Main Lodge	Merrimack	950	Transient non-community	Groundwater
18	Mt Sunapee Ski Area/Summit	Merrimack	950	Transient non-community	Groundwater
19	Epsom Village Water District	Merrimack	800	Community	Groundwater
20	Bear View Crossing	Merrimack	800	Community	Purchased groundwater
21	Mcdonalds Restaurant	Merrimack	700	Transient non-community	Groundwater
22	Warner Village Water Dist	Merrimack	660	Community	Groundwater
23	Kearsarge Regional High Sch	Merrimack	650	Non-transient non-community	Groundwater
24	Andover Village Dist	Merrimack	650	Community	Surface water
25	Bow High School	Merrimack	645	Non-transient non-community	Groundwater
26	Bow Memorial School	Merrimack	615	Non-transient non-community	Groundwater
27	Allenstown Community School	Merrimack	608	Non-transient non-community	Groundwater
28	Hill Water Works	Merrimack	600	Community	Groundwater
29	Ragged Mountain Ski/Golf	Merrimack	600	Transient non-community	Groundwater
30	Dunkin Donuts	Merrimack	600	Transient non-community	Groundwater
31	Kearsarge Regional Middle Sch	Merrimack	550	Non-transient non-community	Groundwater
32	Camp Kenwood and Evergreen	Merrimack	534	Transient non-community	Groundwater
33	Bow Elementary School	Merrimack	522	Non-transient non-community	Groundwater
34	Elm Brook Park	Merrimack	500	Transient non-community	Groundwater
35	Chucksters	Merrimack	500	Transient non-community	Groundwater
36	Dunkin Donuts	Merrimack	500	Transient non-community	Groundwater
37	Mt Sunapee State Pk/Bath House	Merrimack	500	Transient non-community	Groundwater
38	Cascade Campground/Lower	Merrimack	475	Transient non-community	Groundwater
39	Sandy Beach Rv Resort I	Merrimack	463	Transient non-community	Groundwater
40	Spacious Skies French Pond	Merrimack	400	Transient non-community	Groundwater
41	Circle 9 Ranch Campground	Merrimack	395	Transient non-community	Groundwater
42	Catamount Hill	Merrimack	383	Community	Groundwater
43	Cozy Pond Camping Resort/West	Merrimack	375	Transient non-community	Groundwater
44	Freedom Hill/Pine Ridge Est	Merrimack	370	Community	Groundwater
45	Kings Towne MHP	Merrimack	350	Community	Groundwater
46	Loudon Elementary Sch	Merrimack	321	Non-transient non-community	Groundwater
47	Pitco Frialator	Merrimack	311	Non-transient non-community	Groundwater
48	Mclane Northeast	Merrimack	300	Non-transient non-community	Groundwater
49	Bow Mobil	Merrimack	300	Transient non-community	Groundwater
50	Brookside Mall	Merrimack	300	Transient non-community	Groundwater