New Jersey
Somerset County drinking water quality
93 active public water systems serve 334,539 people in Somerset County. 42 are compliant, 51 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 4 carry a health flag.
Active systems
93
5 community systems
People served
335K
by public water systems
Systems with violations
51
55% of active systems, past 3 years
Serious violators
1
4 systems carry a health flag
Needs attention
Princeton Elks 2129
NJ1813301 · Montgomery Twp · Transient non-community system · Serves 90
2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule.
Hillsborough Board of Education
NJ1810309 · Hillsborough Twp · Non-Transient non-community system · Serves 540
2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Lead and Copper Rule.
Fraternal Order of Eagles
NJ1806357 · Bridgewater Twp · Transient non-community system · Serves 200
1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.
Mark E Singley Park
NJ1810352 · Hillsborough Twp · Transient non-community system · Serves 200
1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.
Cedar Hill Club INC
NJ1808342 · Franklin Twp · Transient non-community system · Serves 95
1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.
Community water systems
5 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
NJ American Water Short Hills Bedminster Twp, Belvidere Town, Berkeley Heights Twp and 26 more |
217,230 | 1 | 0 | |
|
Franklin Township Dept of Public Works Franklin Twp |
57,150 | 3 | 2 | |
|
South Brunswick Twp W DI Franklin Twp, South Brunswick Twp |
45,450 | 2 | 1 | |
|
Rocky Hill W Dept Rocky Hill Boro |
687 | 1 | 0 | |
|
NJ American Water Twin Lakes Bernardsville Boro |
250 | 0 | 0 |
Non-community systems (88: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Duke Island Park Bridgewater Twp |
1,506 | 0 | 0 | |
|
Far Hills Country Day School Bernards Twp |
700 | 0 | 0 | |
|
Hillsborough Board of Education Hillsborough Twp |
540 | 2 | 2 | |
|
Fiddlers Elbow Golf Course Bedminster Twp |
500 | 1 | 0 | |
|
Fellowship Deaconry Camp Well Bernards Twp |
450 | 1 | 1 | |
|
Burger King Green Brook Twp |
420 | 0 | 0 | |
|
Garden State Sikh Temple Bridgewater Twp |
402 | 2 | 0 | |
|
Elbereth LLC the Long House Franklin Twp |
355 | 1 | 0 | |
|
Elbereth LLC Kitchen Franklin Twp |
355 | 1 | 0 | |
|
Elbereth LLC School Franklin Twp |
355 | 1 | 0 | |
|
Princeton Mont Soc INC Montgomery Twp |
355 | 0 | 0 | |
|
Exxon USA 3-6110 Bernards Twp |
302 | 0 | 0 | |
|
Waldorf School of Princeton Montgomery Twp |
300 | 3 | 1 | |
|
Trump National Golf Course Bedminster Twp |
275 | 1 | 0 | |
|
Bernardsville Municipal Pool Bernardsville Boro |
210 | 0 | 0 | |
|
Green Knoll Grille Bridgewater Twp |
210 | 0 | 0 | |
|
Corner Cafe and Grill Franklin Twp |
207 | 0 | 0 | |
|
Neshanic Vallley Golf Course-Perf Academ Branchburg Twp |
206 | 0 | 0 | |
|
Arsha Bodha Center Franklin Twp |
202 | 0 | 0 | |
|
Fraternal Order of Eagles Bridgewater Twp |
200 | 1 | 1 | |
|
Mark E Singley Park Hillsborough Twp |
200 | 1 | 1 | |
|
Princeton English Congregation Montgomery Twp |
200 | 1 | 1 | |
|
Bunker Hill Golf Course Franklin Twp |
196 | 0 | 0 | |
|
Fellowship Deaconry INC Bernards Twp |
188 | 0 | 0 | |
|
Church of Jesus Christ Latter Day Saints Branchburg Twp |
185 | 2 | 2 | |
|
ST John on the Mountain Bernards Twp |
180 | 1 | 0 | |
|
Chengdu 1 Palace INC Green Brook Twp |
163 | 1 | 1 | |
|
Super Car Wash Bridgewater Twp |
162 | 1 | 0 | |
|
Longships Complex Hillsborough Twp |
158 | 1 | 0 | |
|
Bridgewater Senior Citizens Center Bridgewater Twp |
151 | 0 | 0 | |
|
Camp Agnes Dewitt Hillsborough Twp |
142 | 1 | 1 | |
|
Dewitt Cabin and Pool Hillsborough Twp |
142 | 1 | 1 | |
|
Lamington Presbyterian Church Bedminster Twp |
122 | 0 | 0 | |
|
Petrocks Bar & Grille Hillsborough Twp |
122 | 0 | 0 | |
|
Roycefield Swim Club Hillsborough Twp |
120 | 2 | 0 | |
|
Blawenburg Bistro Montgomery Twp |
108 | 0 | 0 | |
|
Obriens Tavern Franklin Twp |
108 | 0 | 0 | |
|
Humble House Complex Hillsborough Twp |
107 | 0 | 0 | |
|
South Branch Reformed CH Hillsborough Twp |
107 | 0 | 0 | |
|
Burnt Mills Cider Bedminster Twp |
104 | 0 | 0 | |
|
Warren Brook Park GC Warren Twp |
104 | 1 | 0 | |
|
Fox Hollow GC (club House Branchburg Twp |
100 | 3 | 1 | |
|
MC Knight Field Montgomery Twp |
100 | 1 | 0 | |
|
SO Bound Brook Little League Franklin Twp |
100 | 2 | 0 | |
|
Cedar Hill Club INC Franklin Twp |
95 | 1 | 1 | |
|
Top Corner Sports LLC Bridgewater Twp |
94 | 0 | 0 | |
|
Apples & Books Learning Center Branchburg Twp |
90 | 1 | 0 | |
|
Neshanic Valley Golf Course Branchburg Twp |
90 | 1 | 0 | |
|
Princeton Elks 2129 Montgomery Twp |
90 | 2 | 1 | |
|
Ama Pizza Hillsborough Twp |
85 | 1 | 1 | |
|
Njas Scherman-Hoffman Wildlife Sanctuary Bernardsville Boro |
75 | 1 | 1 | |
|
Tower Plaza Green Brook Twp |
74 | 0 | 0 | |
|
Apple Montessori School-Hillsborough Hillsborough Twp |
70 | 2 | 0 | |
|
Mother of God Church Montgomery Twp |
70 | 0 | 0 | |
|
Our Little Schoolhouse Franklin Twp |
68 | 1 | 0 | |
|
South Branch Family Practice Branchburg Twp |
67 | 2 | 2 | |
|
Somerset Hills Learning Institute Bedminster Twp |
66 | 1 | 1 | |
|
1st Presbyterian Church of Bernardsville Bernardsville Boro |
62 | 0 | 0 | |
|
Alchemy Mind & Body Franklin Twp |
60 | 1 | 1 | |
|
Middlebush Village Shopping Square Franklin Twp |
60 | 0 | 0 | |
|
Franklin Mall Franklin Twp |
59 | 2 | 1 | |
|
Riverside Inn Branchburg Twp |
59 | 0 | 0 | |
|
LA Strada Cafe Branchburg Twp |
58 | 0 | 0 | |
|
Branchburg's Silver Saddle Comm Pool Branchburg Twp |
56 | 1 | 0 | |
|
First Student Hillsborough Twp |
55 | 0 | 0 | |
|
Stewarts Franklin Twp |
54 | 0 | 0 | |
|
Albrook School Bernards Twp |
50 | 1 | 1 | |
|
Mill Pond Park Montgomery Twp |
50 | 2 | 0 | |
|
Montgomery Medical Associates Montgomery Twp |
50 | 0 | 0 | |
|
Watchung Hills Hs-Field Warren Twp |
50 | 3 | 2 | |
|
Duke Farms Foundation Hillsborough Twp |
45 | 0 | 0 | |
|
Wagner Farm Arboretum Warren Twp |
44 | 2 | 0 | |
|
Branchburg Library Branchburg Twp |
40 | 0 | 0 | |
|
Griggstown Volunteer Fire Company Franklin Twp |
40 | 2 | 1 | |
|
Bunker Hill Lutheran Church Franklin Twp |
39 | 0 | 0 | |
|
American Legion Post 293 Warren Twp |
32 | 0 | 0 | |
|
Fellowship Guest House Bernards Twp |
31 | 0 | 0 | |
|
Fraternal Order of Eagle Bridgewater Twp |
31 | 0 | 0 | |
|
Griggstown Reformed Church Franklin Twp |
31 | 0 | 0 | |
|
Neshanic Valley Maintenance Branchburg Twp |
31 | 1 | 1 | |
|
Lamington School House Bedminster Twp |
30 | 0 | 0 | |
|
Roller Hockey Rink North Branch Greenway Bridgewater Twp |
30 | 1 | 0 | |
|
Tabatchnick Fine Foods Franklin Twp |
30 | 1 | 0 | |
|
Warren Twp. Maintenance Warren Twp |
30 | 0 | 0 | |
|
Lynbranch Branchburg Twp |
29 | 0 | 0 | |
|
Red Mill Inn Well #1 Branchburg Twp |
29 | 0 | 0 | |
|
Red Mill Inn Well #2 Branchburg Twp |
29 | 1 | 1 | |
|
Lepp Park Somerville Boro |
25 | 3 | 2 |
Inactive systems (59, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The New Jersey records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.