New Jersey

Sussex County drinking water quality

475 active public water systems serve 204,399 people in Sussex County. 255 are compliant, 220 had at least one EPA violation in the past three years, 9 are designated serious violators, and 18 carry a health flag.

Active systems 475 61 community systems

People served 204K by public water systems

Systems with violations 220 46% of active systems, past 3 years

Serious violators 9 18 systems carry a health flag

Needs attention

Branchville W Dept NJ1903001 · Branchville Boro · Community water system · Serves 1,500 2 rules violated in the past three years. Unresolved: Lead and Copper Rule.

Stillwater Water District 1 NJ1920001 · Stillwater Twp · Community water system · Serves 1,200 10 rules violated in the past three years. Unresolved: Lead and Copper Rule.

Lake Tamarack W CO NJ1911003 · Hardyston Twp · Community water system · Serves 1,000 4 rules violated in the past three years. Unresolved: Public Notice Rule and Revised PN Rule.

Hardyston Twp Mua NJ1911005 · Hardyston Twp · Community water system · Serves 769 4 rules violated in the past three years. Unresolved: Ground Water Rule and Lead and Copper Rule.

Birdie's Cafe NJ1922331 · Vernon Twp · Transient non-community system · Serves 530 2 rules violated in the past three years. Unresolved: Revised Total Coliform Rule.

350 Sparta Complex NJ1918310 · Sparta Twp · Non-Transient non-community system · Serves 316 7 rules violated in the past three years. Unresolved: Lead and Copper Rule and Lead and Copper Rule Revisions.

Walnut Ridge Primary School NJ1922300 · Vernon Twp · Non-Transient non-community system · Serves 250 1 rule violated in the past three years

Nielsen Nissan NJ1904353 · Byram Twp · Non-Transient non-community system · Serves 95 2 rules violated in the past three years. Unresolved: Lead and Copper Rule and Public Notice Rule and Revised PN Rule.

Appalachian Motel NJ1922397 · Vernon Twp · Transient non-community system · Serves 27 3 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Public Notice Rule and Revised PN Rule.

Sparta Twp Water Utility Lake Mohawk NJ1918004 · Sparta Twp · Community water system · Serves 17,625 4 rules violated in the past three years. Unresolved: Lead and Copper Rule.

12 more systems with a serious violator or health flag designation are in the lists below.

Community water systems

61 systems, largest first

System	Serves	Rules violated, 3 yr	Unresolved
Sparta Twp Water Utility Lake Mohawk Sparta Twp	17,625	4	1
Newton Water & Sewer Utility Newton Town	8,300	1	0
Hopatcong Water Dept Hopatcong Boro	7,224	4	2
Veolia Water New Jersey Vernon Valley Vernon Twp	5,517	1	0
Franklin BD of Public Works Franklin Boro	5,500	0	0
Stanhope W Dept Stanhope Boro	3,730	5	0
Hamburg Board of Public Hamburg Boro	3,382	3	0
Ogdensburg W Dept Ogdensburg Boro	2,800	3	1
Sussex W Dept Sussex Boro	2,201	4	2
Montague Water Co. Montague Twp	2,165	0	0
Hardyston Twp Mua Hardyston Twp	1,963	2	0
Sparta Twp Water Utility Highlands Sparta Twp	1,618	3	2
Branchville W Dept Branchville Boro	1,500	2	1
Forest Lakes Water Byram Twp	1,410	1	0
Lake Lenape Water CO Andover Twp	1,250	7	1
Stillwater Water District 1 Stillwater Twp	1,200	10	1
Brookwood Musconetcong River Poa Byram Twp	1,087	1	1
Aqua NJ Wallkill Hardyston Twp	1,050	0	0
Lake Tamarack W CO Hardyston Twp	1,000	4	1
Veolia Water New Jersey Hampton Hampton Twp	814	0	0
Hardyston Twp Mua Hardyston Twp	769	4	2
Veolia Water New Jersey East Brookwood Byram Twp	612	0	0
Andover Boro Water Dept Andover Boro	606	1	0
Aqua NJ Tranquility Springs Green Twp	599	3	1
Saint Pauls Abbey Andover Twp	530	0	0
Aqua NJ Vernon Vernon Twp	515	0	0
Aqua NJ Byram Byram Twp	400	3	1
Sparta Twp Wtr Sunset Sparta Twp	342	2	1
Carriage Mobile Homes INC Hampton Twp	300	4	0
Hillside Estates at Franklin Franklin Boro	300	4	1
Lake Stockholm INC Hardyston Twp	300	4	1
Regency Apartments LLC Wantage Twp	300	3	1
Mohawk Meadows Andover Twp	250	6	2
Veolia Water New Jersey Lake Glenwood Vernon Twp	250	0	0
Rolling Hills Condminium Association Andover Twp	240	0	0
Tranquil Valley Retreat Center Green Twp	232	3	1
Aqua NJ Bear Brook Fredon Twp	226	1	1
Veolia Water New Jersey Sunset Ridge Vernon Twp	208	1	0
Simmons W CO Wantage Twp	180	3	0
Aqua NJ Summit Lake Hardyston Twp	177	2	0
Green Hills Est Prop Own Fredon Twp	175	0	0
Hidden Village Condo Association Vernon Twp	175	4	1
Town Center at Wantage Wantage Twp	175	1	1
Veolia Water New Jersey Sussex Hills Vernon Twp	168	0	0
Veolia Water New Jersey Barry Lakes Vernon Twp	134	0	0
Ascot Park Apts Andover Twp	125	0	0
Veolia Water New Jersey Andover Andover Twp	115	0	0
Sussex Cnty Hlth-The Homested Frankford Twp	100	5	3
Strawberry Point Poa Byram Twp	95	1	0
Veolia Water New Jersey Highland Lakes Vernon Twp	88	0	0

Non-community systems (414: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

System	Serves	Rules violated, 3 yr	Unresolved
Sussex County Fairgrounds Frankford Twp	6,246	0	0
Mountain Creek Resort Vernon Twp	5,041	0	0
Gordon Byram Assoc LLC Byram Twp	4,075	1	1
Walmart Hampton Twp	3,695	3	2
Skylands Ball Park Frankford Twp	3,020	2	1
Wawa 8440 Byram Twp	2,995	2	2
Kittatinny Reg High Scho Hampton Twp	2,400	1	0
Lowes Retail Store #1976 Hampton Twp	2,144	2	1
Vernon Valley Plaza LLC Vernon Twp	2,140	0	0
Dales Market & Jimmy Pizza Frankford Twp	2,000	1	1
Byram Quick Check #183 Byram Twp	1,917	2	0
Quick Chek Lafayette Twp	1,855	0	0
Big N Ames Plaza Hampton Twp	1,818	0	0
Quick Chek Frankford Twp	1,815	1	1
High Point Reg High Scho Wantage Twp	1,750	2	2
Vernon Twp High School Vernon Twp	1,714	2	1
Rolling Hills/lounsberry Hollow School Vernon Twp	1,455	2	1
Nexxt Enterprises LLC Montague Twp	1,325	1	1
Byram Lakes Elem School Byram Twp	1,265	3	1
Quick Chek Store 43 Wantage Wantage Twp	1,213	0	0
Newton McDonalds Hampton Twp	1,207	1	1
Quick Check #68 Hampton Twp	1,179	0	0
Glen Meadow Mdidle School Vernon Twp	1,058	2	1
Wawa Frankford Twp	1,007	0	0
Lodestar Park Fredon Twp	1,000	1	1
Sussex CO Mall Shopping Hampton Twp	964	1	1
Tomahawk Lake Parking Lot Byram Twp	950	1	1
Tomahawk Lake Rides Byram Twp	950	1	1
Market Place Montague Twp	903	1	1
Heaven Hill Farms Vernon Twp	881	2	1
Black Bear Golf Club Hardyston Twp	840	0	0
Lafayette Township School Lafayette Twp	818	1	0
Fredon Elementary School Fredon Twp	812	0	0
Pleasant Acres Farm Campground Wantage Twp	810	0	0
Christian Faith Fellowship Church Hardyston Twp	767	0	0
Frankford Township School Frankford Twp	730	0	0
Wallkill Valley High School Hardyston Twp	710	3	1
Dunkin Donuts Byram Twp	708	0	0
Tall Timbers Camp Ground Well2 Vernon Twp	705	1	1
Tall Timbers Campground Wells No. 3 & 4 Vernon Twp	705	1	0
Good Shepherd RC Church Andover Twp	704	0	0
Cedar Mountain Primary S Vernon Twp	661	1	0
Ballyowen Hardyston Twp	640	2	0
Fredon Plaza Fredon Twp	620	3	1
Perona Farms Andover Twp	620	0	0
Lafayette Center Lafayette Twp	619	0	0
Amg N.e. LLC Montague Twp	615	0	0
Bagelstation Sparta Twp	609	0	0
Wantage Dunkin Donuts Wantage Twp	606	0	0
Dollar General16563 Wantage Twp	603	1	1
Wantage Plaza Wantage Twp	589	0	0
Clifton E Lawrence School Wantage Twp	543	4	1
Birdie's Cafe Vernon Twp	530	2	1
Burger King Hampton Twp	515	0	0
Harmony Ridge Campground Frankford Twp	509	2	1
ST Jude the Apostle Hardyston Twp	503	2	0
Fredon Township Civic Center Fredon Twp	500	0	0
ST Fancis de Sales Church Vernon Twp	500	0	0
Waterloo Village Byram Twp	500	1	1
Our Lady Queen of Peace Frankford Twp	485	1	1
Farmstead Golf Andover Twp	473	0	0
Hardyston Twp Middle School Hardyston Twp	450	0	0
Montague Elem School Montague Twp	450	0	0
Stillwater Twp Elementary School Stillwater Twp	450	1	1
Skylands Ice World Hardyston Twp	415	0	0
Great Divide Campground Green Twp	408	1	0
Lafayette Federated Church Lafayette Twp	408	0	0
Lukoil Montague Twp	407	2	1
Vernon Dollar General Vernon Twp	405	0	0
Tomahawk Lake Catering Byram Twp	403	2	1
Someplace Special Square Condo Assoc Vernon Twp	400	7	0
McKeown Elementrary School Hampton Twp	393	0	0
Camp Somers Byram Twp	390	2	1
High Point ST Pk-Day Use Area Montague Twp	387	1	1
Franklin Sussex Automall INC Wantage Twp	380	0	0
Montague Mini Mall Montague Twp	370	0	0
Vernon Burger Vernon Twp	370	0	0
Hampton Diner Hampton Twp	362	0	0
Maple Tree Plaza Building a Hardyston Twp	362	0	0
Corner Rest T/a Greeks Tavern Andover Twp	360	2	1
Main Dining Hall Fairview Lakes Stillwater Twp	359	0	0
Highland General Store Vernon Twp	356	0	0
Stokes State Forest Haskins Sandyston Twp	342	0	0
Acorn Plaza Super X Byram Twp	332	0	0
Swartswood State Park Stillwater Twp	325	2	2
350 Sparta Complex Sparta Twp	316	7	2
The Market Place Deli Vernon Twp	311	0	0
Classic Bagel & Bake Byram Twp	310	1	0
Long Pond School Andover Twp	310	0	0
Wild West City Byram Twp	306	1	0
Hainesville General Store Sandyston Twp	303	1	0
Camp Lou Henry Hoover / Caretaker House Stillwater Twp	301	1	0
Camp Lou Henry Hoover Stillwater Twp	300	1	0
Frenches Grove Water CO Byram Twp	300	1	0
Hampton Township Park Hampton Twp	300	1	0
ST Francis de Sales Parish Life Center Vernon Twp	300	0	0
ST John Vianney RC Church Hardyston Twp	300	0	0
Panther Lake CG Office Well Byram Twp	295	0	0
Level 10 Hardyston Twp	293	0	0
Mountain Shadows Lake I Stillwater Twp	276	2	1

All 414 in the systems table

Inactive systems (159, 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.

Sussex County drinking water quality

Needs attention

Community water systems

Compliant

Violations in the past 3 years

Serious violator

Health flag

Inactive system