Who supplies water in your New Jersey town
124 separate public water purveyors serve the 85 municipalities of Sussex, Warren, Morris Counties, and 6 of those towns have no mapped public water system at all, and 3more have less than one percent of their land inside a service area. Which one reaches your address is not something the town name answers, and in a good part of this region the answer is a well, a shared well, or an association system the state does not map. Sparta runs three systems. Andover Township has no water department and four private companies. This is NJDEP’s own mapping of who actually delivers where, written out so you can read it.
The short version
The name on your water bill is your purveyor, and it is the only office that can shut your curb valve during a leak. If no bill arrives, you are on a well and the entire line from the wellhead to the house is yours. Between the two, the line from the curb stop to your house is the property owner’s responsibility in almost every town on this page, which is why a leak in the front yard is your bill and a break in the road is not.
Three things this data shows that surprise people
Whole townships have no mapped public water. Sandyston, Walpack, Hardwick, Hope, Knowlton, Liberty have no public community water delivery area anywhere inside their borders. That does not mean nobody there gets a water bill: systems under fifteen connections fall below what the state maps, and shared wells and small association systems are common in exactly these towns. It does mean there is no municipal or company main to tap. Another 3 towns, Frankford, Frelinghuysen, Harmony, are served across less than one percent of their land, which in practice means one small pocket and wells everywhere else.
Being “associated” with a water company is not the same as being served by one. Franchise areas cover ground a utility has the right to serve one day. Delivery areas cover ground it serves now. Directories routinely blur the two, and NJDEP does not: it maps delivery only. We had this wrong on our own Lafayette page for part of a day and corrected it against this dataset.
Some towns are genuinely fragmented. Mount Olive tops the list with 16 separate systems inside one municipality. When a town is split like that, no single phone number is the right answer for everybody who lives there.
Every town, every purveyor
Percentages are the share of the municipality’s land area inside a mapped delivery area, not the share of homes. Towns are grouped by county.
| Town | County | Land area served | Public water purveyors |
|---|---|---|---|
| Andover Borough | Sussex | 65.8% | Andover Boro WD (65.8%) |
| Andover Township | Sussex | 5.2% | Lake Lenape WC (2.5%) Newton Water and Sewer Utility (0.7%) Andover Boro WD (0.6%) St Paul's Abbey (0.3%) Sparta Twp WU- Lake Mohawk (0.3%) Rolling Hills Condo Assoc. (0.3%) Forest Lakes WC (0.2%) Veolia Water NJ Andover (0.1%) Andover Subacute and Rehab 1 (0.1%) |
| Branchville Leaks: 973-948-4626 | Sussex | 99.4% | Branchville WD (99.4%) |
| Byram | Sussex | 8.8% | Sparta Twp WU- Lake Mohawk (3.1%) Forest Lakes WC (2.3%) Brookwood Musconetcong River POA (1.4%) Aqua NJ - Byram (1.3%) Veolia Water NJ East Brookwood (0.5%) Colby WC (0.1%) |
| Frankford | Sussex | None | Branchville WD (0.1%) |
| Franklin Borough Leaks: 973-827-7060 | Sussex | 30.4% | Franklin Board of Public Works (28.7%) Hillside Estates at Franklin (1.6%) Ogdensburg WD (0.1%) |
| Fredon | Sussex | 2.8% | Aqua NJ - Bear Brook (2.4%) Green Hills Estates POA (0.4%) |
| Green | Sussex | 5.5% | Aqua NJ - Tranquility Springs (5.2%) Tranquil Valley Retreat Center (0.3%) |
| Hamburg Leaks: 973-832-9886 | Sussex | 99.9% | Hamburg Board of Public Utilities (99.9%) |
| Hampton Township | Sussex | 1% | Stillwater Water District 1 (0.5%) Veolia Water NJ Hampton (0.4%) Carriage Mobile Homes Inc. (0.2%) |
| Hardyston Leaks: 973-823-7020 | Sussex | 3.1% | Hardyston Twp MUA (1.1%) Aqua NJ - Wallkill (1%) Lake Tamarak WC (0.4%) Hardyston Twp MUA (0.4%) Lake Stockholm Inc. (0.1%) Aqua NJ - Summit Lake (0.1%) |
| Hopatcong Leaks: 973-770-1200 | Sussex | 24.1% | Hopatcong WD (24.1%) |
| Lafayette | Sussex | 1.4% | Sparta Twp WU- Lake Mohawk (1.4%) |
| Montague Leaks: 1-800-272-1325 | Sussex | 2.1% | Montague WC (2.1%) |
| Newton Leaks: 973-383-3521 | Sussex | 88.4% | Newton Water and Sewer Utility (88.4%) |
| Ogdensburg Leaks: 973-827-3444 | Sussex | 99.5% | Ogdensburg WD (99.5%) |
| Sandyston | Sussex | None | Private wells throughout |
| Sparta Leaks: 973-729-7133 | Sussex | 34.7% | Sparta Twp WU- Lake Mohawk (29.6%) Sparta Twp WU - Highlands (4.2%) Sparta Twp WU - Sunset Lake (0.9%) |
| Stanhope Leaks: 973-347-6368 | Sussex | 63.1% | Stanhope WD (61.4%) NJ American Water - ITC (1.7%) |
| Stillwater Leaks: 973-579-1579 | Sussex | 1.8% | Stillwater Water District 1 (1.8%) |
| Sussex Leaks: 973-875-4202 | Sussex | 94% | Sussex WD (94%) |
| Vernon Leaks: 973-764-4055 | Sussex | 3.1% | Veolia Water NJ Highland Lakes (1.7%) Veolia Water NJ Vernon Valley (0.6%) Aqua NJ - Vernon (0.3%) Veolia Water NJ Sussex HIlls (0.2%) Veolia Water NJ Sunset Ridge (0.1%) Veolia Water NJ Lake Glenwood (0.1%) Veolia Water NJ David Curtis (0.1%) |
| Walpack | Sussex | None | Private wells throughout |
| Wantage | Sussex | 2.2% | Sussex WD (1.8%) Simmons WC (0.2%) Veolia Water NJ Woodridge Estates (0.1%) |
| Allamuchy Leaks: 908-852-6356 | Warren | 7.9% | Allamuchy Twp Water and Sewer (7.3%) Hackettstown MUA (0.7%) |
| Alpha | Warren | 93.7% | Alpha Municipal Water Works (93.7%) |
| Belvidere | Warren | 99.2% | NJ American Water - Belvidere (99.2%) |
| Blairstown | Warren | 1.4% | Township of Blairstown DPW (1.4%) |
| Franklin Township | Warren | 99.4% | NJ American Water - Washington/Oxford (99.4%) |
| Frelinghuysen | Warren | None | Forest Manor Retirement Home (0.1%) |
| Greenwich | Warren | 20.2% | Aqua NJ - Phillipsburg (19.5%) NJ American Water - Washington/Oxford (0.7%) |
| Hackettstown | Warren | 95% | Hackettstown MUA (95%) |
| Hardwick | Warren | None | Private wells throughout |
| Harmony | Warren | None | Aqua NJ - Harkers Hollow (0.1%) Aqua NJ - Brainards (0.1%) |
| Hope | Warren | None | Private wells throughout |
| Independence | Warren | 14.8% | Hackettstown MUA (13.2%) Veolia Water NJ Independence Highland (1.5%) Veolia Water NJ Independence Valley View (0.2%) |
| Knowlton | Warren | None | Private wells throughout |
| Liberty | Warren | None | Private wells throughout |
| Lopatcong | Warren | 49.6% | Aqua NJ - Phillipsburg (49.6%) |
| Mansfield | Warren | 12.6% | Hackettstown MUA (6.7%) NJ American Water - Washington/Oxford (5.9%) |
| Oxford | Warren | 99.9% | NJ American Water - Washington/Oxford (99.1%) Highlander Hills Estates (0.7%) Oxford Heritage Manor (0.1%) |
| Phillipsburg | Warren | 81.9% | Aqua NJ - Phillipsburg (81.9%) |
| Pohatcong | Warren | 8.7% | Aqua NJ - Phillipsburg (7.7%) Aqua NJ - Warren Glen (0.9%) Aqua NJ - Riegelsville (0.1%) |
| Washington Borough | Warren | 100% | NJ American Water - Washington/Oxford (100%) |
| Washington Township | Warren | 99.7% | NJ American Water - Washington/Oxford (99.7%) |
| White | Warren | 99.5% | NJ American Water - Belvidere (98.9%) Country View Village LLC (0.3%) Windtryst Apartments (0.1%) NJ American Water - Washington/Oxford (0.1%) |
| Boonton Town | Morris | 84.3% | Boonton WD (84.2%) Montville Twp MUA (0.1%) |
| Boonton Township | Morris | 6.4% | Boonton WD (3.4%) Boonton Twp WD (3%) |
| Butler Leaks: 973-838-7208 | Morris | 100% | Butler WD (100%) |
| Chatham Borough | Morris | 100% | Chatham WD (99.9%) NJ American Water - Short Hills (0.1%) |
| Chatham Township | Morris | 99.9% | NJ American Water - Short Hills (97%) South East Morris County MUA (2.8%) |
| Chester Borough | Morris | 99.6% | NJ American Water - Short Hills (98.8%) Windy Acres Mobile Home (0.9%) |
| Chester Township | Morris | 4.7% | NJ American Water - Short Hills (4.2%) AMW Four Seasons at Chester (0.5%) |
| Denville | Morris | 98.8% | Denville Twp WD (98.8%) |
| Dover Leaks: 973-366-2200 | Morris | 100% | Dover WC (100%) |
| East Hanover | Morris | 97.3% | East Hanover Twp WD (97.3%) |
| Florham Park | Morris | 91.3% | Florham Park WD (62.6%) NJ American Water - Short Hills (28.6%) Chatham WD (0.1%) |
| Hanover | Morris | 100% | South East Morris County MUA (99.8%) East Hanover Twp WD (0.1%) |
| Harding | Morris | 16.2% | South East Morris County MUA (13.7%) NJ American Water - Short Hills (2%) Lakeshore Co. (0.6%) |
| Jefferson | Morris | 14.9% | Jefferson Twp Water Utility - Lake Hopatcong (7.7%) Jefferson Twp W U Milton System (5.9%) AWO&M - Picatinny Arsenal (1.2%) Lake Stockholm Inc. (0.1%) Jefferson Twp WU Vassar Road (0.1%) |
| Kinnelon | Morris | 17.7% | Fayson Lakes WC Inc. (11.6%) Kinnelon WD (4.9%) Butler WD (1.3%) |
| Lincoln Park | Morris | 56.5% | Lincoln Park WD (51.3%) Lincoln Park - Jacksonville Sys (5.2%) |
| Long Hill | Morris | 100% | NJ American Water - Short Hills (99.9%) NJ American Water - Raritan (0.1%) |
| Madison | Morris | 100% | Madison WD (96.4%) NJ American Water - Short Hills (2.3%) South East Morris County MUA (1.3%) |
| Mendham Borough | Morris | 100% | NJ American Water - Short Hills (100%) |
| Mendham Township | Morris | 44.7% | NJ American Water - Short Hills (37.9%) South East Morris County MUA (6.8%) |
| Mine Hill | Morris | 72.8% | Mine Hill Twp WD (72.8%) |
| Montville | Morris | 37.7% | Montville Twp MUA (37.7%) |
| Morris | Morris | 99.9% | South East Morris County MUA (99.5%) Sisters of Charity of South Elizabeth (0.5%) |
| Morris Plains | Morris | 100% | South East Morris County MUA (99.8%) Parsippany-Troy Hills WD (0.1%) |
| Morristown | Morris | 100% | South East Morris County MUA (100%) |
| Mount Arlington Leaks: 973-398-4200 | Morris | 77.6% | Mount Arlington Boro DPW Main (62.2%) Roxbury Twp WD - Shore Hills (7%) Mount Arlington DPW Kadel Sys. (6.2%) Veolia Water NJ Arlington Hills (2.2%) |
| Mount Olive | Morris | 31.7% | NJ American Water - ITC (8.8%) Mt Olive Twp - Flanders (6%) Hackettstown MUA (4.2%) Morris Chase/ Morris Hunt PCWS (2.7%) Mt Olive Twp - Tinc Farm (2.6%) NJ American Water - Mt Olive - West Jersey (2%) Mt Olive Villages WC (1.8%) Mt Olive Twp WD - Sand Shore (0.7%) Mt Olive Twp WD - Village Green (0.6%) Mt Olive Twp WD - Pinecrest (0.6%) Mt Olive WD - Goldmine Sys (0.5%) Mt Olive Twp WD - Carlton Hills (0.5%) Mt Olive Twp - Lynwood Estates (0.3%) NJ Vasa Home WS (0.2%) NJ American Water - Roxbury (0.2%) Netcong WD (0.1%) |
| Mountain Lakes | Morris | 97.8% | Mountain Lakes WD (96.9%) Parsippany-Troy Hills WD (0.4%) Boonton WD (0.3%) Denville Twp WD (0.1%) |
| Netcong | Morris | 86.6% | Netcong WD (86.2%) NJ American Water - ITC (0.4%) |
| Parsippany-Troy Hills | Morris | 88.9% | Parsippany-Troy Hills WD (88.9%) |
| Pequannock | Morris | 63.9% | Pequannock Twp WD (60.6%) Pequannock Twp WD - Cedar Crest (3.3%) |
| Randolph | Morris | 99.5% | Randolph Twp Public Works Dept (93.8%) Dover WC (5.7%) |
| Riverdale | Morris | 62.1% | Riverdale Boro WD (62.1%) |
| Rockaway Borough | Morris | 100% | Rockaway Boro WD (99.9%) Denville Twp WD (0.1%) |
| Rockaway Township Leaks: 973-983-2825 | Morris | 33.5% | AWO&M - Picatinny Arsenal (18.3%) Rockaway Twp WD (13.1%) Dover WC (1.4%) Rockaway Boro WD (0.8%) |
| Roxbury | Morris | 49.8% | NJ American Water - Roxbury (26.8%) Roxbury Twp WD - Skyview (15.6%) Roxbury Twp WD - Shore Hills (7.2%) Roxbury Twp WD - Evergreen (0.2%) |
| Victory Gardens | Morris | 100% | Dover WC (100%) |
| Washington Township | Morris | 22.7% | Washington Twp MUA - Hager (9.8%) Washington Twp MUA - Schooleys Mountain (7.5%) Hackettstown MUA (5.2%) Sherwood Village (0.1%) Aqua NJ - Cliffside Park (0.1%) |
| Wharton Leaks: 973-361-8444 | Morris | 99.6% | Wharton WD (98.8%) Dover WC (0.8%) |
Derived from the NJDEP Purveyor Service Areas of New Jersey (edition 2025-07-03, read 2026-08-25), joined to US Census 2020 county subdivision boundaries. NJDEP maps actual delivery areas; franchise areas are excluded. Shares under 0.08 percent of a town are dropped as boundary noise. A state file can lag a change of ownership: this edition still lists Montague WC, and New Jersey American Water completed its purchase of that system on 1 June 2026. Check the name on your bill before you rely on any directory, including this one.
Situations this data will not show you
The state maps public community water systems, which means at least fifteen year-round connections or twenty-five year-round residents. Anything smaller is real but invisible to it. None of the following are unusual around here, and we work on all of them.
A shared well serving a few houses
Two, four, ten houses on one well with a common line down a shared drive. Below fifteen connections it is not a public community water system and does not appear in the state map at all, but there is still a shared pipe, shared responsibility and often a shared shutoff. These are some of the trickiest jobs we do, because who owns which length of pipe is usually in a deed rather than on a map.
A lake community or homeowners association system
Plenty of lake communities here run their own water. Larger ones are mapped as purveyors. Smaller ones are not, and the association itself is the utility. If you pay a water charge to your association rather than to a town or a company, that is what you are on.
A system too new or too recently sold to be on the state map
The edition behind our numbers was published 2025-07-03. A connection extended down your road since then, or a system that changed hands, will not show. Montague is the live example: New Jersey American Water completed its purchase there on 1 June 2026 and the state file still carries the old company.
A property right on the edge of a service area
Boundaries on a map are cleaner than boundaries in the ground. Properties just outside a mapped area are sometimes connected, and properties just inside are sometimes not. On the edge, the only reliable answer is your bill and what we find when we dig.
A business, school or campground on its own system
Non-community systems serve places people visit rather than live, and they are regulated differently and mapped separately. If you run one, your water is your own infrastructure and the repair is entirely yours.
A well on a street that also has a public main
Public water running past the house does not mean the house is on it. Plenty of properties kept the well after the main went in. Connecting is usually possible and sometimes worth it, and that is a real conversation rather than an automatic yes.
Whichever of these you are in, the trench, the pipe and the restoration are the same work, and it is work we do every week. If you are not sure which one describes your property, tell us the address and what your bill says and we will tell you. That is a phone call, not a quote. What replacing a water line involves.
Questions people ask
How do I find out who supplies my water in New Jersey?
Read the name off your water bill. That is your purveyor, and it is the office that can shut your curb valve. If a water charge comes from a homeowners association or a lake community rather than a town or a company, that association is your water system. If no water charge reaches you at all, you are on a well, either your own or one shared with neighbors. The table on this page shows which purveyors deliver to each town, but several towns are served by more than one, so the town name alone will not tell you which is yours.
Which New Jersey towns have no public water at all?
In the three counties covered here, 6: Sandyston (Sussex), Walpack (Sussex), Hardwick (Warren), Hope (Warren), Knowlton (Warren), Liberty (Warren). In those municipalities NJDEP maps no public community water delivery area at all, which means there is no municipal or company main to connect to. Most properties draw from their own well. It does not mean every property is alone: a system serving fewer than fifteen year-round connections is below the threshold the state maps, so shared wells and small homeowners association systems exist in these towns without appearing anywhere on the map. A further 3 towns are served across less than one percent of their land area: Frankford, Frelinghuysen, Harmony. Those have a single small served pocket and wells everywhere else.
Does my town being listed with a water company mean I am connected to it?
No, and this is the trap. A town can appear associated with a water system it does not actually receive service from, because franchise areas and delivery areas are different things. NJDEP maps delivery areas only. Lafayette Township is the clean example: it shows up alongside Sparta's Lake Mohawk system, but only about 1.4 percent of Lafayette's land area is actually inside any delivery area, and Sussex County's own wastewater plan says Lafayette has no public water supply system.
Who is responsible for the water line from the street to my house?
You are, in almost every case. The utility owns the main in the street and usually the curb stop. From the curb to the house the service line is the property owner's, which is why a leak in the front yard is a homeowner's bill and a break in the road is not. Two situations break that pattern and are worth checking before you assume: some towns and some grant programs cover part of a replacement, particularly where lead is involved, and on a shared well or an association system the responsibility for the common run is usually set by a deed or the association's rules rather than by where the pipe sits. On a single private well the whole run is yours.
What does the percentage on this page actually measure?
The share of the municipality's land area that falls inside a mapped public water delivery area, not the share of homes on public water. A compact borough centre can hold most of a town's houses on a small slice of its acreage, so a town reading 24 percent by area can still have most of its residents on public water. Read it as how much of the ground is served, and expect the well properties to be the outlying ones on larger lots.
Why an excavation contractor publishes this
Because we get asked it on nearly every water line we replace, and because the answer changes the job. On public water the purveyor owns the main and usually the curb stop, the connection is permitted through them, and somebody else can shut the water off while we work. On a well there is no valve to shut and no permit to pull from a utility, and the whole run belongs to the owner. Quoting one as though it were the other wastes everybody’s time.
What replacing a line actually involves, and what it costs, is on water service replacement. If water is surfacing right now, the numbers to call are on emergency excavation. For getting a line under a driveway without opening it, directional boring.
Sources last read 2026-08-25. JWSR is an excavation contractor, not a water utility. Nothing here replaces a call to the purveyor named on your bill.
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