Rockingham County, New Hampshire — public water systems

551 active public water systems serve Rockingham County, reporting 258.2K people served.

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

Active systems

551

Population served

258.2K

Community systems

199

Groundwater share

96.6%

Water systems in Rockingham County

Active public water systems in Rockingham County, New Hampshire
#	Water system	County	Population served	Type	Source
1	Portsmouth Water Works	Rockingham	33,000	Community	Surface water
2	Salem Water Dept	Rockingham	21,000	Community	Surface water
3	Aquarion Water/Nh	Rockingham	18,950	Community	Groundwater
4	Derry Water Dept	Rockingham	17,290	Community	Purchased surface water
5	Seabrook Water Dept	Rockingham	14,000	Community	Groundwater
6	Exeter Water Dept	Rockingham	12,236	Community	Surface water
7	Pease Trade Port	Rockingham	9,900	Community	Groundwater
8	Hampstead Area Water	Rockingham	7,153	Community	Purchased surface water
9	Londonderry	Rockingham	6,255	Community	Purchased surface water
10	Newmarket Water Works	Rockingham	5,030	Community	Groundwater
11	Rye Water Dist	Rockingham	4,300	Community	Groundwater
12	Raymond Water Dept	Rockingham	3,300	Community	Groundwater
13	Exeter High Sch	Rockingham	1,605	Non-transient non-community	Groundwater
14	Epping Water and Sewer Dept	Rockingham	1,600	Community	Groundwater
15	Drew Woods	Rockingham	1,408	Community	Purchased surface water
16	Rockingham County Complex	Rockingham	1,387	Community	Groundwater
17	Golden Brook Sch	Rockingham	1,314	Non-transient non-community	Groundwater
18	Timberlane Regional Hs	Rockingham	1,137	Non-transient non-community	Groundwater
19	Windham High Sch	Rockingham	1,110	Non-transient non-community	Groundwater
20	Wakeda Campground	Rockingham	999	Transient non-community	Groundwater
21	Pawtuckaway St Pk/Horse Island	Rockingham	999	Transient non-community	Groundwater
22	Pawtuckaway St Pk/Day Use Area	Rockingham	999	Transient non-community	Groundwater
23	Candia First Stoppe	Rockingham	999	Transient non-community	Groundwater
24	Pawtuckaway St Pk/Admn Complex	Rockingham	999	Transient non-community	Groundwater
25	Exeter River Mobile Home Park	Rockingham	980	Community	Groundwater
26	Great Bay Camping/Store/Deli	Rockingham	925	Transient non-community	Groundwater
27	New Castle Water Works	Rockingham	910	Community	Purchased surface water
28	Dunkin Donuts	Rockingham	900	Transient non-community	Groundwater
29	Plaistow Petro King	Rockingham	900	Transient non-community	Groundwater
30	Timberlane Middle Sch	Rockingham	897	Non-transient non-community	Groundwater
31	Sanborn Regional Middle/High	Rockingham	875	Non-transient non-community	Groundwater
32	Brook Park Ests	Rockingham	875	Community	Purchased surface water
33	Nouria 1167	Rockingham	800	Transient non-community	Groundwater
34	Tuxbury Pond Rv Resort	Rockingham	800	Transient non-community	Groundwater
35	Dunkin Donuts /Pc 346676	Rockingham	800	Transient non-community	Groundwater
36	Auburn Dunkin Donuts	Rockingham	800	Transient non-community	Groundwater
37	Coe Brown Academy	Rockingham	765	Non-transient non-community	Groundwater
38	Coe Brown Smith Hall	Rockingham	765	Non-transient non-community	Groundwater
39	Ymca Camp Lincoln/Pavilion	Rockingham	750	Transient non-community	Groundwater
40	Coe Brown Athletic Field	Rockingham	750	Transient non-community	Groundwater
41	Ymca Camp Lincoln/Lakeside	Rockingham	750	Transient non-community	Groundwater
42	Auburn Village Sch	Rockingham	732	Non-transient non-community	Groundwater
43	Vlg of Northwood Rdg Wtr Dist	Rockingham	688	Community	Groundwater
44	Deerfield Community Sch	Rockingham	650	Non-transient non-community	Groundwater
45	Stratham Memorial Sch	Rockingham	625	Non-transient non-community	Groundwater
46	Green Hills Ests	Rockingham	620	Community	Purchased groundwater
47	Mobil on the Run	Rockingham	615	Transient non-community	Groundwater
48	Chester Academy	Rockingham	607	Non-transient non-community	Groundwater
49	Dunkin Donuts	Rockingham	600	Transient non-community	Groundwater
50	Nouria Food Mart 2018	Rockingham	600	Transient non-community	Groundwater