Water quality in Mendham, New Jersey
Mendham is in Morris County. 307 active public water systems serve the county; 190 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Morris County
63 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Lakeshore Company Harding Twp |
270 | 3 | 1.9 mi | |
| Sisters of Charity of ST Elizabeth Morris Twp |
1,100 | 1 | 5.3 mi | |
| Randolph Twp Public Works Dept Randolph Twp |
14,820 | 0 | 5.6 mi | |
| Morris County Mua Randolph Twp |
0 | 1 | 6.2 mi | |
| NJ American Water Short Hills Bedminster Twp, Belvidere Town, Berkeley Heights Twp and 26 more |
217,230 | 1 | 6.3 mi | |
| Madison Water Dept Madison Boro |
15,820 | 3 | 6.5 mi | |
| Dover Water Commission Dover Town |
27,806 | 6 | 8.0 mi | |
| Florham Park Water Dept Florham Park Boro |
8,846 | 3 | 8.1 mi | |
| Awm Four Seasons at Chester Chester Twp |
280 | 0 | 8.1 mi | |
| Mine Hill Twp Water Dept Mine Hill Twp |
4,300 | 3 | 8.3 mi | |
| Chatham Water Dept Chatham Boro |
8,962 | 1 | 8.4 mi | |
| Windy Acres Mobile Home Chester Boro |
100 | 1 | 8.6 mi | |
| Denville Twp Water Dept Denville Twp |
15,881 | 3 | 8.8 mi | |
| Parsippany-Troy Hills Water Department Parsippany Troy-hills |
50,400 | 0 | 8.9 mi | |
| Rockaway Boro Water Dept Denville Twp, Rockaway Boro, Rockaway Twp |
7,066 | 2 | 9.0 mi | |
| Wharton Water Dept Mine Hill Twp, Wharton Boro |
6,342 | 1 | 9.4 mi | |
| Hoffman Homes Rockaway Twp |
120 | 2 | 9.4 mi | |
| NJ American Water Roxbury Roxbury Twp |
11,793 | 0 | 9.5 mi | |
| Mount Olive Twp W D Main Mount Olive Twp |
7,887 | 7 | 9.6 mi | |
| East Hanover Twp Water Dept East Hanover Twp |
11,393 | 2 | 10.0 mi | |
| Mountain Lakes Water Dep Boonton Twp, Denville Twp, Mountain Lakes Boro and 1 more |
4,012 | 4 | 10.0 mi | |
| Roxbury Twp W Dept-Sky V Roxbury Twp |
4,478 | 2 | 10.3 mi | |
| Rockaway Twp Water Dept Rockaway Twp |
14,000 | 5 | 10.3 mi | |
| Veolia Water New Jersey Arlington Hills Mount Arlington Boro |
1,989 | 0 | 10.5 mi | |
| MT Olive Carlton Hills Water System Mount Olive Twp |
267 | 5 | 10.7 mi |
Non-community systems in Morris County (243: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Morristown Natl Historic Park Harding Twp |
100 | 2 | 0 | |
|
Cafe Sapori Harding Twp |
52 | 1 | 0 | |
|
Mendham Golf & Tennis Club-Clubhouse Mendham Twp |
162 | 0 | 0 | |
|
Mendham Golf & Tennis Club-Tennis Mendham Twp |
78 | 0 | 0 | |
|
Country Mile Village Harding Twp |
276 | 0 | 0 | |
|
Wightmans Farms Harding Twp |
610 | 0 | 0 | |
|
Camp Jockey Hollow Mendham Twp |
301 | 1 | 0 | |
|
Harding Twp JR School (ft BL Harding Twp |
345 | 1 | 1 | |
|
Harding Twp Elementary School Harding Twp |
225 | 1 | 0 | |
|
Harding Township Library Harding Twp |
45 | 1 | 0 | |
|
First Presbyterian Church Harding Twp |
132 | 0 | 0 | |
|
Harding Township Municipal Building Harding Twp |
122 | 2 | 0 | |
|
12 Village LLC Harding Twp |
107 | 0 | 0 | |
|
906 Harding Group LLC Harding Twp |
67 | 0 | 0 | |
|
Christ the King Church Harding Twp |
507 | 0 | 0 | |
|
Roxiticus Golf Club Mendham Twp |
140 | 0 | 0 | |
|
Indoor Sports Pavilion Randolph Twp |
523 | 0 | 0 | |
|
Center Court at Morristown Morris Twp |
42 | 0 | 0 | |
|
Harbor Hills Day Camp Bathrooms Randolph Twp |
605 | 1 | 0 | |
|
Harbor Hills Day Camp Pavillion Randolph Twp |
605 | 1 | 0 | |
|
Westmont Montesorri School Chester Twp |
145 | 0 | 0 | |
|
Morris County Golf Club Morris Twp |
307 | 0 | 0 | |
|
Toma World LLC Randolph Twp |
80 | 0 | 0 | |
|
Dogwood School Chester Twp |
63 | 1 | 0 | |
|
The Malon Resort Florham Park Boro |
124 | 2 | 0 | |
|
Ironia Shopping Center Randolph Twp |
101 | 3 | 0 | |
|
Pizza Pub Randolph Twp |
210 | 0 | 0 | |
|
Bills Lunch & General ST Chester Twp |
103 | 1 | 1 | |
|
Indoor Soccer LLC Harding Twp |
72 | 0 | 0 | |
|
Casa de Pasta Randolph Twp |
130 | 1 | 1 | |
|
Long Hill Christian Preschool Chatham Twp |
45 | 0 | 0 | |
|
415 RT 24 Condo Association Chester Twp |
59 | 0 | 0 | |
|
Montessori Kids Universe Chester Chester Twp |
117 | 1 | 1 | |
|
Chester Woods Professional Park Chester Twp |
35 | 2 | 0 | |
|
Plaza 415 Condo Association Randolph Twp |
54 | 1 | 1 | |
|
MR Crabbys Randolph Twp |
33 | 0 | 0 | |
|
School House Plaza Randolph Twp |
811 | 1 | 1 | |
|
Highlands Building Chester Twp |
240 | 1 | 0 | |
|
Parsippany Inn Parsippany Troy-hills |
54 | 1 | 0 | |
|
Black River Middle School Chester Twp |
380 | 2 | 1 | |
|
Chester Community Pool Chester Boro |
302 | 0 | 0 | |
|
LA Strada Restaurant Randolph Twp |
53 | 0 | 0 | |
|
Thirty Five Righter RD Assoc Randolph Twp |
41 | 0 | 0 | |
|
Sussex Turnpike Industrial Campus Condo Randolph Twp |
517 | 1 | 0 | |
|
Goddard School Randolph Twp |
251 | 0 | 0 | |
|
Heritage Woodland LLC Randolph Twp |
119 | 0 | 0 | |
|
Wdiftk INC Randolph Twp |
143 | 0 | 0 | |
|
Marigold Academy Randolph Twp |
111 | 2 | 1 | |
|
Club House Golf Center Randolph Twp |
314 | 1 | 0 | |
|
Delta 7th Heaven Market Chester Twp |
47 | 1 | 1 |
About this data
Water systems are matched to Morris County, nearest to Mendham first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files or the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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.