New Jersey
Warren County drinking water quality
220 active public water systems serve 325,760 people in Warren County. 107 are compliant, 113 had at least one EPA violation in the past three years, 4 are designated serious violators, and 8 carry a health flag.
Active systems
220
24 community systems
People served
326K
by public water systems
Systems with violations
113
51% of active systems, past 3 years
Serious violators
4
8 systems carry a health flag
Needs attention
Mobil/7-Eleven
NJ2122331 · Washington Twp · Transient non-community system · Serves 506
3 rules violated in the past three years. Unresolved: Public Notice Rule and Revised PN Rule.
Emerald Hills Rehab & Nursing
NJ2116004 · Mansfield Twp · Community water system · Serves 180
5 rules violated in the past three years. Unresolved: Revised Total Coliform Rule, Lead and Copper Rule, Public Notice Rule and Revised PN Rule, and Consumer Confidence Rule.
Warren Residential Group
NJ2123308 · White Twp · Non-Transient non-community system · Serves 60
3 rules violated in the past three years. Unresolved: Revised Total Coliform Rule.
Mobil Mart/subway
NJ2115317 · Lopatcong Twp · Transient non-community system · Serves 54
2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Public Notice Rule and Revised PN Rule.
Blairstown Commons
NJ2104305 · Blairstown Twp · Non-Transient non-community system · Serves 238
2 rules violated in the past three years. Unresolved: Lead and Copper Rule.
7 Eleven
NJ2113345 · Knowlton Twp · Transient non-community system · Serves 204
2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Public Notice Rule and Revised PN Rule.
James Alexander Corp
NJ2106309 · Frelinghuysen Twp · Non-Transient non-community system · Serves 140
3 rules violated in the past three years. Unresolved: Lead and Copper Rule.
Township of Liberty
NJ2114321 · Liberty Twp · Transient non-community system · Serves 103
2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule.
Happiness IS Camping At-Well #3
NJ2109308 · Hardwick Twp · Transient non-community system · Serves 100
1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.
Independence Recreation Comple
NJ2112325 · Independence Twp · Transient non-community system · Serves 80
1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule.
Community water systems
24 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 | |
|
Aqua NJ Phillipsburg Phillipsburg Town |
26,686 | 2 | 0 | |
|
Hackettstown Mua Hackettstown Town |
22,000 | 6 | 1 | |
|
NJ American Water Washington/oxford Washington Boro |
10,719 | 2 | 0 | |
|
Allamuchy Twp Water & Sewer Allamuchy Twp |
5,423 | 5 | 2 | |
|
NJ American Water Belvidere Belvidere Town |
2,854 | 0 | 0 | |
|
Alpha Municipal Water Works Alpha Boro |
2,530 | 3 | 2 | |
|
Township of Blairstown Dpw Blairstown Twp |
800 | 1 | 1 | |
|
Veolia Water NJ Independence Highland Independence Twp |
350 | 0 | 0 | |
|
Country View Village, LLC White Twp |
310 | 4 | 1 | |
|
Forest Manor Retirement Home Frelinghuysen Twp |
224 | 4 | 1 | |
|
Windtryst Apts White Twp |
216 | 4 | 0 | |
|
Aqua NJ Warren Glen Pohatcong Twp |
192 | 0 | 0 | |
|
Emerald Hills Rehab & Nursing Mansfield Twp |
180 | 5 | 4 | |
|
Aqua NJ Brainards Harmony Twp |
135 | 0 | 0 | |
|
Highlander Hills Estates Oxford Twp |
120 | 4 | 2 | |
|
Veolia Water NJ Independence Valley View Independence Twp |
110 | 1 | 1 | |
|
Riverside MHP Knowlton Twp |
85 | 3 | 3 | |
|
Hillside Village Mansfield Twp |
75 | 2 | 0 | |
|
Clover Rest Home Knowlton Twp |
64 | 3 | 1 | |
|
Aqua NJ Riegelsville Pohatcong Twp |
62 | 1 | 1 | |
|
Oxford Heritage Manor Oxford Twp |
60 | 5 | 0 | |
|
Aqua NJ Harkers Hollow Harmony Twp |
40 | 2 | 1 | |
|
Triple Brook Mobile Home Knowlton Twp |
32 | 0 | 0 |
Non-community systems (196: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Acme Shopping Plaza Blairstown Twp |
1,550 | 1 | 0 | |
|
Quick Chek #5 White Twp |
1,410 | 1 | 0 | |
|
NO Warren Reg High Sch Blairstown Twp |
1,200 | 2 | 0 | |
|
Delaware Water Gap Travel Plaza Knowlton Twp |
1,150 | 1 | 0 | |
|
Land of Make Believe Hope Twp |
1,076 | 0 | 0 | |
|
Travel Centers of America Knowlton Twp |
1,070 | 2 | 0 | |
|
Belvidere Shopping Plaza White Twp |
949 | 0 | 0 | |
|
McDonalds of Clinton Washington Twp |
842 | 1 | 0 | |
|
Mansfield Twp Elementary Mansfield Twp |
820 | 0 | 0 | |
|
McDonalds Columbia Knowlton Twp |
810 | 0 | 0 | |
|
D S M Nutritional Products INC White Twp |
636 | 1 | 0 | |
|
Dunkin Donuts Lopatcong Twp |
614 | 0 | 0 | |
|
Mamma Maria Washington Twp |
515 | 3 | 1 | |
|
White Township Dunkin Donuts White Twp |
513 | 0 | 0 | |
|
Hope Tree Dunkin Donuts Hope Twp |
507 | 0 | 0 | |
|
World Apostolate of Fati Washington Twp |
507 | 0 | 0 | |
|
Del River Family Cmp Grn Knowlton Twp |
506 | 1 | 1 | |
|
Mobil/7-Eleven Washington Twp |
506 | 3 | 1 | |
|
Njdot Route 80 Rest Area Knowlton Twp |
500 | 0 | 0 | |
|
Lakeland Plaza White Twp |
418 | 0 | 0 | |
|
Oakwood Bowling Lanes & Sports Washington Twp |
412 | 0 | 0 | |
|
White Twp Consolidated School White Twp |
410 | 4 | 1 | |
|
Kittatinny Visitor Center Knowlton Twp |
403 | 2 | 1 | |
|
Harmony Twp Elementary School Harmony Twp |
353 | 1 | 0 | |
|
Camp NO BE BO Sco (shower Well) Hardwick Twp |
350 | 1 | 0 | |
|
Camp No-Be-Bo-Sco (kitchen) Hardwick Twp |
350 | 0 | 0 | |
|
Great Meadows Middle Independence Twp |
348 | 1 | 1 | |
|
Oxford Furnace Lake Oxford Twp |
310 | 1 | 0 | |
|
Dept of Interior/delaware Water Gap Nra Hardwick Twp |
305 | 2 | 1 | |
|
Sunmart Sunoco Station & Convenience Sto Mansfield Twp |
303 | 0 | 0 | |
|
Mansfield Twp Municipal Comple Mansfield Twp |
295 | 0 | 0 | |
|
Fountain Mall Blairstown Twp |
282 | 2 | 0 | |
|
Independence Centralschool Independence Twp |
260 | 0 | 0 | |
|
Rdj Service Independence Twp |
258 | 0 | 0 | |
|
Belvidere Regional Pool Belvidere Town |
257 | 0 | 0 | |
|
Island Dragway Independence Twp |
255 | 1 | 1 | |
|
Knowlton Twp Elementary Knowlton Twp |
250 | 0 | 0 | |
|
Worthington State Park Hardwick Twp |
250 | 1 | 1 | |
|
Blairstown Commons Blairstown Twp |
238 | 2 | 1 | |
|
Hope Twp Elementary School Hope Twp |
228 | 2 | 0 | |
|
Race Farm Blairstown Twp |
208 | 0 | 0 | |
|
The Log Cabin Knowlton Twp |
207 | 1 | 1 | |
|
County of Warren Library North Independence Twp |
206 | 0 | 0 | |
|
Nykuns Store & Bar Independence Twp |
206 | 0 | 0 | |
|
Warren CO Library-Cdh Branch Blairstown Twp |
205 | 1 | 0 | |
|
7 Eleven Knowlton Twp |
204 | 2 | 2 | |
|
Abundant Life Community Church Mansfield Twp |
203 | 1 | 1 | |
|
Evangelical Church/blair Blairstown Twp |
203 | 0 | 0 | |
|
The Doghouse Blairstown Twp |
203 | 0 | 0 | |
|
Frelinghuysen Twp Elm SC Frelinghuysen Twp |
200 | 1 | 0 | |
|
Milbrook Village Well 2 Hardwick Twp |
200 | 0 | 0 | |
|
Worthington State Park Hardwick Twp |
200 | 0 | 0 | |
|
Blairstown Trades & Prof Blairstown Twp |
196 | 1 | 0 | |
|
Ridge & Valley Charter School Frelinghuysen Twp |
182 | 0 | 0 | |
|
Villa Mattar Bistro Allamuchy Twp |
170 | 0 | 0 | |
|
YMCA Camp Ralph S Mason Hardwick Twp |
168 | 0 | 0 | |
|
Presbyterian Camp and CO Frelinghuysen Twp |
166 | 0 | 0 | |
|
Princeton Blairstown Ctr Hardwick Twp |
165 | 1 | 0 | |
|
Hope Center Lower Well Hope Twp |
160 | 0 | 0 | |
|
Hope Center Upper Well Hope Twp |
160 | 0 | 0 | |
|
U S Gas Hope Twp |
154 | 0 | 0 | |
|
Home Plate Dairy Franklin Twp |
153 | 1 | 1 | |
|
Knowlton Presbyterian Church Knowlton Twp |
152 | 0 | 0 | |
|
Borealis Compounds, Inc. Mansfield Twp |
145 | 1 | 0 | |
|
Church of the Covenant Mansfield Twp |
143 | 0 | 0 | |
|
Congregation Jehovahs WI Knowlton Twp |
140 | 0 | 0 | |
|
James Alexander Corp Frelinghuysen Twp |
140 | 3 | 1 | |
|
First Hope Bank Blairstown Twp |
127 | 2 | 0 | |
|
Blairstown Dairy Blairstown Twp |
126 | 1 | 0 | |
|
Apple Mountain Country Club Royal Resor White Twp |
119 | 0 | 0 | |
|
Skylands Medical Building C/o Route 94 R Blairstown Twp |
119 | 1 | 0 | |
|
Camp Taylor Campground Knowlton Twp |
116 | 0 | 0 | |
|
Shops at Greenwich Greenwich Twp |
116 | 2 | 0 | |
|
Siddhachalam International Mission Blairstown Twp |
110 | 0 | 0 | |
|
Buck Hill Brewery & Restaurant Blairstown Twp |
109 | 0 | 0 | |
|
Humpty Juniors Knowlton Twp |
106 | 0 | 0 | |
|
Triplebrook Family Campground Knowlton Twp |
105 | 0 | 0 | |
|
Triplebrook Family Campground Knowlton Twp |
105 | 0 | 0 | |
|
Hot Dog Johnnys White Twp |
104 | 1 | 1 | |
|
Rock Creek Tavern Harmony Twp |
104 | 0 | 0 | |
|
Bel Pike Lanes White Twp |
103 | 0 | 0 | |
|
Harmony Spirits & Grocery Harmony Twp |
103 | 1 | 1 | |
|
Riverside Diner White Twp |
103 | 1 | 0 | |
|
Township of Liberty Liberty Twp |
103 | 2 | 1 | |
|
Bello Giorno White Twp |
102 | 0 | 0 | |
|
Inhouse Frelinghuysen Twp |
102 | 1 | 1 | |
|
Jack's Barn, the Loft White Twp |
102 | 0 | 0 | |
|
Roman Pizza Blairstown Twp |
102 | 0 | 0 | |
|
Brock Hollow Winery Banquet Facility Knowlton Twp |
101 | 1 | 0 | |
|
MT Lake Fire Company Liberty Twp |
101 | 2 | 0 | |
|
ST Rose of Lima Church Oxford Twp |
101 | 0 | 0 | |
|
Franklin Twp Volunteer Fire Dept Franklin Twp |
100 | 1 | 0 | |
|
Happiness IS Camping At-Well #1 Hardwick Twp |
100 | 0 | 0 | |
|
Happiness IS Camping At-Well #3 Hardwick Twp |
100 | 1 | 1 | |
|
Knowlton United Methodis Knowlton Twp |
100 | 0 | 0 | |
|
Little Hill Foundation INC Hardwick Twp |
100 | 2 | 0 | |
|
Worthington State Park Hardwick Twp |
100 | 1 | 0 | |
|
Washington Shopping Center, INC Washington Twp |
98 | 1 | 1 | |
|
Hope Market Hope Twp |
96 | 3 | 1 | |
|
Calvary Community Church Harmony Twp |
93 | 0 | 0 |
Inactive systems (103, 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.