Monmouth County, New Jersey — public water systems

285 active public water systems serve Monmouth County, reporting 715.3K people served.

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

Active systems

285

Population served

715.3K

Community systems

Groundwater share

90.9%

Water systems in Monmouth County

Active public water systems in Monmouth County, New Jersey
#	Water system	County	Population served	Type	Source
1	Nj American Water - Coastal North	Monmouth	377,613	Community	Surface water
2	Gordons Corner Water Co	Monmouth	46,196	Community	Purchased surface water
3	Freehold Twp Water Dept	Monmouth	29,831	Community	Purchased surface water
4	Marlboro Township Water Utility Division	Monmouth	29,480	Community	Purchased surface water
5	Wall Twp Water Dept	Monmouth	26,000	Community	Purchased surface water
6	Belmar Water Dept	Monmouth	20,000	Community	Purchased surface water
7	Manasquan Water Departme	Monmouth	14,000	Community	Groundwater
8	Red Bank Water Dept	Monmouth	12,520	Community	Purchased surface water
9	Spring Lake Water Department	Monmouth	11,270	Community	Purchased surface water
10	Freehold Borough Water D	Monmouth	11,029	Community	Groundwater
11	Keansburg Water & Sewer Dept.	Monmouth	10,105	Community	Purchased surface water
12	Matawan Borough Water De	Monmouth	9,084	Community	Purchased surface water
13	Manalapan Twp - Knob Hill	Monmouth	8,700	Community	Purchased surface water
14	Keyport Water Dept	Monmouth	7,500	Community	Purchased surface water
15	Aberdeen - Cliffwood/Cliffwood Beach	Monmouth	6,775	Community	Purchased surface water
16	Borough of Springlake Heights	Monmouth	5,000	Community	Purchased surface water
17	Avon By the Sea Water De	Monmouth	5,000	Community	Purchased surface water
18	Brielle Water Dept	Monmouth	4,800	Community	Purchased surface water
19	Atlantic Highlands Water	Monmouth	4,385	Community	Groundwater
20	Lake Como Water Dept	Monmouth	3,000	Community	Purchased surface water
21	Wawa #909	Monmouth	2,995	Non-transient non-community	Groundwater
22	Delicious Orchard Market	Monmouth	2,725	Non-transient non-community	Groundwater
23	Sea Girt Water Dept	Monmouth	2,636	Community	Purchased surface water
24	Englishtown Water Dept	Monmouth	2,504	Community	Purchased surface water
25	Wawa #910	Monmouth	2,446	Non-transient non-community	Groundwater
26	Aberdeen- High School/Oakshade Area	Monmouth	2,123	Community	Purchased surface water
27	Colts Neck High School	Monmouth	2,100	Non-transient non-community	Groundwater
28	Monmouth County Park System	Monmouth	2,021	Transient non-community	Groundwater
29	Allentown Water Dept	Monmouth	2,000	Community	Groundwater
30	Mcdonalds Restaurant #6214	Monmouth	1,620	Non-transient non-community	Groundwater
31	Farmingdale Water Dept	Monmouth	1,500	Community	Groundwater
32	Quick Chek Store #178	Monmouth	1,240	Non-transient non-community	Groundwater
33	Us Naval Weapons Station	Monmouth	1,200	Community	Purchased surface water
34	Manasquan Reservoir Visitor Center	Monmouth	1,008	Transient non-community	Groundwater
35	The Orchards at Colts Neck	Monmouth	950	Non-transient non-community	Groundwater
36	Roosevelt Water Dept	Monmouth	880	Community	Groundwater
37	Millstone Twp Middle School	Monmouth	850	Non-transient non-community	Groundwater
38	Burger King #13470	Monmouth	848	Transient non-community	Groundwater
39	Mcdonalds Restaurant	Monmouth	821	Transient non-community	Groundwater
40	St. Josephs Church	Monmouth	802	Transient non-community	Groundwater
41	Manalapan Twp Wd Tracy Station	Monmouth	800	Community	Purchased surface water
42	Black Bear Lake Day Camp #2	Monmouth	700	Transient non-community	Groundwater
43	Black Bear Day Camp Well 3	Monmouth	700	Transient non-community	Groundwater
44	Millstone Twp Primary School	Monmouth	650	Non-transient non-community	Groundwater
45	Church of St. William the Abbot	Monmouth	650	Non-transient non-community	Groundwater
46	Veolia Water New Jersey Colts Neck	Monmouth	640	Community	Purchased surface water
47	Frog Bridge Day Camp & Tadpole Village P	Monmouth	618	Transient non-community	Groundwater
48	Pine Grove Day Camp Bldg	Monmouth	610	Transient non-community	Groundwater
49	Pine Grove Day Camp Well#1	Monmouth	605	Transient non-community	Groundwater
50	Colts Neck Shopping Ctr	Monmouth	575	Non-transient non-community	Groundwater