New Jersey
Morris County drinking water quality
307 active public water systems serve 679,801 people in Morris County. 117 are compliant, 190 had at least one EPA violation in the past three years, 13 are designated serious violators, and 12 carry a health flag.
Active systems
307
64 community systems
People served
680K
by public water systems
Systems with violations
190
62% of active systems, past 3 years
Serious violators
13
12 systems carry a health flag
Needs attention
Dover Water Commission
NJ1409001 · Dover Town · Community water system · Serves 27,806
6 rules violated in the past three years. Unresolved: 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethylene, 1,2,4-Trichlorobenzene, 1,2-Dichloroethane, 1,2-Dichloropropane, Benzene, Carbon Tetrachloride, Chlorobenzene, Consumer Confidence Rule (CCR), Dichloromethane (Methylene Chloride), Ethylbenzene, Revised Total Coliform Rule (RTCR), Styrene, Tetrachloroethylene (PCE), Toluene, Trichloroethylene (TCE), Vinyl Chloride, Xylenes, Total, cis-1,2-Dichloroethylene, o-Dichlorobenzene, p-Dichlorobenzene, and trans-1,2-Dichloroethylene.
Lincoln Park Water Dept
NJ1416001 · Lincoln Park Boro · Community water system · Serves 11,000
4 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR) and TTHM (Total Trihalomethanes).
Jefferson Twp W U LK Hop
NJ1414011 · Jefferson Twp · Community water system · Serves 8,500
6 rules violated in the past three years
MT Olive Villages Water
NJ1427001 · Mount Olive Twp · Community water system · Serves 5,000
11 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR) and Revised Total Coliform Rule (RTCR).
Mine Hill Twp Water Dept
NJ1420001 · Mine Hill Twp · Community water system · Serves 4,300
3 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR), Lead and Copper Rule (LCR), and Revised Total Coliform Rule (RTCR).
MT Olive Village Green Water System
NJ1427007 · Mount Olive Twp · Community water system · Serves 3,600
6 rules violated in the past three years. Unresolved: E. coli (Escherichia coli), Lead and Copper Rule (LCR), and Revised Total Coliform Rule (RTCR).
School House Plaza
NJ1432343 · Randolph Twp · Transient non-community system · Serves 811
1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule (RTCR).
Mount Olive Twp W D Sand
NJ1427006 · Mount Olive Twp · Community water system · Serves 744
5 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR).
MT Olive Twp WD Pinecrest
NJ1427008 · Mount Olive Twp · Community water system · Serves 648
7 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR).
MT Olive Twp Tinc Farm
NJ1427015 · Mount Olive Twp · Community water system · Serves 597
8 rules violated in the past three years. Unresolved: Lead and Copper Rule (LCR).
11 more systems with a serious violator or health flag designation are in the lists below.
Community water systems
64 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 | |
|
Southeast Morris County Mua Chatham Boro, Hanover Twp, Harding Twp and 4 more |
62,349 | 1 | 0 | |
|
Parsippany-Troy Hills Water Department Parsippany Troy-hills |
50,400 | 0 | 0 | |
|
Dover Water Commission Dover Town |
27,806 | 6 | 2 | |
|
Montville Twp Mua Montville Twp |
22,000 | 1 | 0 | |
|
Denville Twp Water Dept Denville Twp |
15,881 | 3 | 0 | |
|
Madison Water Dept Madison Boro |
15,820 | 3 | 1 | |
|
Randolph Twp Public Works Dept Randolph Twp |
14,820 | 0 | 0 | |
|
Pequannock Twp Water Department Lincoln Park Boro, Pequannock Twp |
14,010 | 4 | 2 | |
|
Rockaway Twp Water Dept Rockaway Twp |
14,000 | 5 | 1 | |
|
NJ American Water Roxbury Roxbury Twp |
11,793 | 0 | 0 | |
|
East Hanover Twp Water Dept East Hanover Twp |
11,393 | 2 | 1 | |
|
Lincoln Park Water Dept Lincoln Park Boro |
11,000 | 4 | 1 | |
|
Boonton Water Dept Boonton Town |
9,532 | 4 | 0 | |
|
Chatham Water Dept Chatham Boro |
8,962 | 1 | 0 | |
|
Florham Park Water Dept Florham Park Boro |
8,846 | 3 | 1 | |
|
Jefferson Twp W U LK Hop Jefferson Twp |
8,500 | 6 | 0 | |
|
Mount Olive Twp W D Main Mount Olive Twp |
7,887 | 7 | 2 | |
|
Butler Water Dept Bloomingdale Boro, Butler Boro, Kinnelon Boro and 1 more |
7,630 | 3 | 0 | |
|
Rockaway Boro Water Dept Denville Twp, Rockaway Boro, Rockaway Twp |
7,066 | 2 | 1 | |
|
NJ American Water Itc Mount Olive Twp |
6,463 | 0 | 0 | |
|
Wharton Water Dept Mine Hill Twp, Wharton Boro |
6,342 | 1 | 0 | |
|
Awo&m Picatinny Arsenal Rockaway Twp |
6,011 | 0 | 0 | |
|
Roxbury Twp W Dept-Shore Roxbury Twp |
5,153 | 2 | 1 | |
|
MT Olive Villages Water Mount Olive Twp |
5,000 | 11 | 2 | |
|
Washington Twp Mua-Schoo Washington Twp |
4,986 | 1 | 0 | |
|
Jefferson Twp W U Milton Sys Jefferson Twp |
4,500 | 4 | 1 | |
|
Roxbury Twp W Dept-Sky V Roxbury Twp |
4,478 | 2 | 2 | |
|
Mine Hill Twp Water Dept Mine Hill Twp |
4,300 | 3 | 3 | |
|
Riverdale Boro Water Dep Riverdale Boro |
4,103 | 3 | 0 | |
|
Mountain Lakes Water Dep Boonton Twp, Denville Twp, Mountain Lakes Boro and 1 more |
4,012 | 4 | 1 | |
|
MT Olive Village Green Water System Mount Olive Twp |
3,600 | 6 | 3 | |
|
Washington Twp Mua-Hager Tewksbury Twp, Washington Twp |
3,458 | 3 | 1 | |
|
Netcong Water Dept Netcong Boro |
3,342 | 2 | 0 | |
|
Fayson Lakes Water Company INC Kinnelon Boro |
3,010 | 2 | 0 | |
|
Veolia Water New Jersey Arlington Hills Mount Arlington Boro |
1,989 | 0 | 0 | |
|
Mount Arlington Boro Dpw Main Mount Arlington Boro |
1,978 | 4 | 1 | |
|
Kinnelon Water Dept Kinnelon Boro |
1,938 | 4 | 1 | |
|
Pequannock Twp Wd-Cedar Crest Pequannock Twp |
1,463 | 1 | 0 | |
|
Sisters of Charity of ST Elizabeth Morris Twp |
1,100 | 1 | 0 | |
|
Morris Chase/morris Hunt Pcws Mount Olive Twp |
1,080 | 7 | 1 | |
|
Mount Arlington Dpw Kadel Sys Mount Arlington Boro |
1,053 | 3 | 1 | |
|
NJ American Water West Jersey Mount Olive Twp |
837 | 0 | 0 | |
|
Mount Olive Twp W D Sand Mount Olive Twp |
744 | 5 | 1 | |
|
MT Olive Twp WD Pinecrest Mount Olive Twp |
648 | 7 | 1 | |
|
MT Olive Twp Tinc Farm Mount Olive Twp |
597 | 8 | 1 | |
|
Boonton Twp Water Dept Boonton Town |
305 | 0 | 0 | |
|
Lincoln Park Jacksonville Syst Lincoln Park Boro |
300 | 4 | 2 | |
|
Awm Four Seasons at Chester Chester Twp |
280 | 0 | 0 | |
|
Lakeshore Company Harding Twp |
270 | 3 | 1 |
Non-community systems (243: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
MT Olive High School Mount Olive Twp |
1,795 | 3 | 1 | |
|
West Morris Central High Washington Twp |
1,415 | 2 | 0 | |
|
Jefferson Twp High School Jefferson Twp |
1,400 | 1 | 0 | |
|
Hopatcong State Park Roxbury Twp |
1,200 | 1 | 0 | |
|
Windlass Restaurant & Marina Jefferson Twp |
1,020 | 1 | 0 | |
|
Quick-Chek Chester Twp |
1,006 | 1 | 0 | |
|
Jefferson Twp Middle School Jefferson Twp |
900 | 0 | 0 | |
|
School House Plaza Randolph Twp |
811 | 1 | 1 | |
|
ST Lukes Parish Washington Twp |
786 | 1 | 0 | |
|
Seven-Eleven Store Mount Olive Twp |
708 | 0 | 0 | |
|
Berkshire Plaza Jefferson Twp |
675 | 1 | 0 | |
|
Wightmans Farms Harding Twp |
610 | 0 | 0 | |
|
Harbor Hills Day Camp Bathrooms Randolph Twp |
605 | 1 | 0 | |
|
Harbor Hills Day Camp Pavillion Randolph Twp |
605 | 1 | 0 | |
|
B & J Market Jefferson Twp |
602 | 0 | 0 | |
|
West Main Associates Chester Boro |
574 | 0 | 0 | |
|
Sandshore School Mount Olive Twp |
557 | 2 | 1 | |
|
Cozy Lake Elementary Jefferson Twp |
530 | 1 | 0 | |
|
Indoor Sports Pavilion Randolph Twp |
523 | 0 | 0 | |
|
Rockaway Valley School Boonton Town |
520 | 1 | 0 | |
|
Sussex Turnpike Industrial Campus Condo Randolph Twp |
517 | 1 | 0 | |
|
Christ the King Church Harding Twp |
507 | 0 | 0 | |
|
Our Lady of the Magnificat Kinnelon Boro |
506 | 4 | 0 | |
|
ST Thomas the Apostle C Jefferson Twp |
504 | 1 | 0 | |
|
Jcc Day Camp at Flanders Mount Olive Twp |
500 | 0 | 0 | |
|
Flanders Valley Wedding and Banquets Mount Olive Twp |
483 | 0 | 0 | |
|
Budd Lake Plaza Mount Olive Twp |
441 | 0 | 0 | |
|
Alstede Farms Farm Store Chester Twp |
424 | 0 | 0 | |
|
The Mall at Wild Geese Mount Olive Twp |
424 | 0 | 0 | |
|
Alstede Farms House & Farm Chester Twp |
420 | 1 | 0 | |
|
Plaza 10 Roxbury Twp |
391 | 1 | 1 | |
|
Katherine D Mallone Sch Rockaway Twp |
390 | 3 | 1 | |
|
Black River Middle School Chester Twp |
380 | 2 | 1 | |
|
The Grill Room Jefferson Twp |
365 | 1 | 0 | |
|
Shotmeyer Brothers Riverdale Boro |
357 | 2 | 1 | |
|
Harding Twp JR School (ft BL Harding Twp |
345 | 1 | 1 | |
|
Dunkin Donuts (ledgewood) Roxbury Twp |
329 | 0 | 0 | |
|
Deer Lake Club Boonton Twp |
316 | 0 | 0 | |
|
Club House Golf Center Randolph Twp |
314 | 1 | 0 | |
|
Kingtown Diesel Roxbury Twp |
312 | 1 | 0 | |
|
Morris County Golf Club Morris Twp |
307 | 0 | 0 | |
|
Flanders LLC Mount Olive Twp |
305 | 2 | 1 | |
|
Kew Garden Realty LLC Pequannock Twp |
305 | 0 | 0 | |
|
Sun Air Camp Jefferson Twp |
303 | 1 | 0 | |
|
Chester Community Pool Chester Boro |
302 | 0 | 0 | |
|
Camp Jockey Hollow Mendham Twp |
301 | 1 | 0 | |
|
Camp Winnebago Dining Hall Rockaway Twp |
300 | 0 | 0 | |
|
Budd Lake Diner Mount Olive Twp |
299 | 0 | 0 | |
|
Country Mile Village Harding Twp |
276 | 0 | 0 | |
|
Crescent JV Roxbury Twp |
274 | 1 | 0 | |
|
Washington Twp SR Citize Washington Twp |
274 | 1 | 0 | |
|
Minisink Club, Inc. Chatham Boro |
271 | 0 | 0 | |
|
Alices Jefferson Twp |
262 | 2 | 1 | |
|
Wendys Old Fashioned Hamburger Jefferson Twp |
258 | 2 | 2 | |
|
Mount Olive Shopping Parkade Mount Olive Twp |
255 | 2 | 1 | |
|
Speedway #3456 Roxbury Twp |
255 | 1 | 1 | |
|
Exxon USA 3-5390 Mount Arlington Boro |
253 | 3 | 0 | |
|
Paramount Plaza Mount Olive Twp |
253 | 0 | 0 | |
|
Country Farms Mount Olive Twp |
252 | 0 | 0 | |
|
Goddard School Randolph Twp |
251 | 0 | 0 | |
|
Hacklebarney State Park Washington Twp |
251 | 0 | 0 | |
|
Kinnelon Prof Bldg Kinnelon Boro |
250 | 1 | 1 | |
|
Equity Plaza Mount Olive Twp |
240 | 0 | 0 | |
|
Highlands Building Chester Twp |
240 | 1 | 0 | |
|
Building 1451 LLC Roxbury Twp |
226 | 0 | 0 | |
|
Harding Twp Elementary School Harding Twp |
225 | 1 | 0 | |
|
ST David Episcopal Church Kinnelon Boro |
224 | 2 | 0 | |
|
Black River Barn Randolph Twp |
223 | 2 | 0 | |
|
Tap House 15 Jefferson Twp |
220 | 1 | 0 | |
|
Jefferson House Jefferson Twp |
215 | 1 | 0 | |
|
Apple Montessori Schools Kinnelon Boro |
210 | 0 | 0 | |
|
Berkshire Valley Golf Course Jefferson Twp |
210 | 0 | 0 | |
|
Centenary College Uset Classroom Washington Twp |
210 | 0 | 0 | |
|
Centenary University Barns Washington Twp |
210 | 1 | 0 | |
|
Pizza Pub Randolph Twp |
210 | 0 | 0 | |
|
Our Lady of the Mountain Washington Twp |
204 | 2 | 1 | |
|
Speedy Mart Jefferson Twp |
202 | 0 | 0 | |
|
Kessler Institute for Rehab Chester Twp |
200 | 3 | 0 | |
|
Randolph Park Beach Randolph Twp |
200 | 1 | 0 | |
|
#45 South Plaza Phase #1 Jefferson Twp |
199 | 5 | 0 | |
|
Big a Route 10 LLC Roxbury Twp |
180 | 1 | 0 | |
|
1881 NJ LLC Roxbury Twp |
170 | 3 | 0 | |
|
Jefferson Dairy Jefferson Twp |
170 | 1 | 0 | |
|
MT Olive Professional PA Mount Olive Twp |
170 | 0 | 0 | |
|
Njdot @ Roxbury Corp Center Roxbury Twp |
170 | 3 | 0 | |
|
Ihop Kenvil Roxbury Twp |
168 | 0 | 0 | |
|
Vincenzos Pizza Mount Olive Twp |
166 | 0 | 0 | |
|
Fla-Net Campground Mount Olive Twp |
164 | 1 | 1 | |
|
Casa Bianca Jefferson Twp |
162 | 3 | 1 | |
|
Mendham Golf & Tennis Club-Clubhouse Mendham Twp |
162 | 0 | 0 | |
|
Marios Pizza Jefferson Twp |
154 | 1 | 0 | |
|
ST Simmons Church Rockaway Twp |
151 | 0 | 0 | |
|
Park Meadows Industrial East Hanover Twp |
150 | 1 | 0 | |
|
Jefferson Strip Mall Jefferson Twp |
145 | 2 | 0 | |
|
Prudent Publishing CO Roxbury Twp |
145 | 1 | 0 | |
|
Westmont Montesorri School Chester Twp |
145 | 0 | 0 | |
|
Mountainside Deli Rockaway Twp |
144 | 1 | 0 | |
|
Wdiftk INC Randolph Twp |
143 | 0 | 0 | |
|
Community Church of Smoke Rise Kinnelon Boro |
140 | 0 | 0 | |
|
Roxiticus Golf Club Mendham Twp |
140 | 0 | 0 |
Inactive systems (152, 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.