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Nitrate Contamination

Nitrate in New Jersey Drinking Water

Ranked by nitrate violation count · Data from EPA SDWIS & UCMR

385
Cities Tested
385
Has Violations
100%
% Has Violations
5.5 violations
State Avg
▼ 0% vs national
vs National
323
Health Violations
Analysis

Nitrate in New Jersey: what the data shows

New Jersey has 385 cities with nitrate-related violations. The EPA MCL for nitrate is 10 mg/L (measured as nitrogen). The state has 385 cities with at least one nitrate violation. Nitrate is the most common groundwater contaminant in the United States. It enters water supplies primarily through agricultural fertilizer runoff, septic system leaching, and animal feedlot operations. Rural and agricultural communities face the highest risk. The primary acute health concern is methemoglobinemia ("blue baby syndrome") in infants under six months. Emerging research also links chronic nitrate exposure to thyroid disease, certain cancers, and adverse birth outcomes. Reverse osmosis, ion exchange, and distillation can remove nitrate from drinking water — standard carbon filters do not.

Comparison

Cities exceeding 10 mg/L EPA MCL

New Jersey
100%
385 of 385 cities
← = Exactly at national rate
National avg
100%
7727 of 7727 cities
City Map

Nitrate data across New Jersey

Each dot is a city with nitrate violation data. Cities with at least one nitrate-related violation are highlighted. Size reflects population served.

New Jersey city water quality map
Water quality: A B C D F
1 cities mapped · hover to preview · click to explore
Worst Offenders

Top 10 cities by nitrate level in New Jersey

Highest Nitrate levels (violations)

  1. 1 F Mount Olive Twp.-1427 74 violations Yes 217K
  2. 2 F Vineland City-0614 69 violations Yes 38K
  3. 3 F Vernon Twp.-1922 58 violations Yes 6K
  4. 4 F Sparta Twp.-1918 56 violations Yes 20K
  5. 5 F Parsippany Troy-Hills-1429 55 violations Yes 50K
  6. 6 D Pittsgrove Twp.-1710 39 violations Yes 2K
  7. 7 D+ Roxbury Twp.-1436 31 violations Yes 12K
  8. 8 D+ Hopatcong Boro-1912 31 violations Yes 7K
  9. 9 F Jefferson Twp.-1414 28 violations Yes 9K
  10. 10 D Byram Twp.-1904 27 violations Yes 1K
All Cities

All New Jersey cities ranked by nitrate level

# City Level Level Violations? Violations Grade
1 Mount Olive Twp.-1427 74 violations
Yes 42
F
2 Vineland City-0614 69 violations
Yes 70
F
3 Vernon Twp.-1922 58 violations
Yes 16
F
4 Sparta Twp.-1918 56 violations
Yes 11
F
5 Parsippany Troy-Hills-1429 55 violations
Yes 5
F
6 Pittsgrove Twp.-1710 39 violations
Yes 76
D
7 Roxbury Twp.-1436 31 violations
Yes 8
D+
8 Hopatcong Boro-1912 31 violations
Yes 3
D+
9 Jefferson Twp.-1414 28 violations
Yes 36
F
10 Byram Twp.-1904 27 violations
Yes 29
D
11 Jackson Twp.-1511 26 violations
Yes 18
F
12 Clinton Town -1005 25 violations
Yes 2
D
13 Hillsdale Boro-0227 24 violations
Yes 4
D
14 Montvale Boro-0236 24 violations
Yes 4
D
15 Woodcliff Lake Boro-0268 24 violations
Yes 4
D
16 Rockaway Twp.-1435 24 violations
Yes 8
F
17 Middle Twp.-0506 24 violations
Yes 2
D
18 Park Ridge Boro-0247 23 violations
Yes 2
C+
19 Saddle River Boro-0258 23 violations
Yes 2
C+
20 Ramsey Boro-0248 22 violations
Yes 56
F
21 Mannington Twp.-1705 22 violations
Yes 8
C-
22 Medford Twp.-0320 20 violations
Yes 2
C+
23 Stillwater Twp.-1920 20 violations
Yes 13
D+
24 Hardyston Twp.-1911 19 violations
Yes 10
F
25 Franklin Twp.-0805 19 violations
Yes 19
F
26 North Hanover Twp.-0326 18 violations
Yes 31
D
27 Fairfield Twp.-0605 17 violations
Yes 7
F
28 Glassboro Boro-0806 16 violations
Yes 16
C
29 Pilesgrove Twp.-1709 16 violations
Yes 1
B+
30 Woodstown Boro-1715 16 violations
Yes 1
B+
31 Mahwah Twp-0233 15 violations
Yes 2
C-
32 Pemberton Twp.-0329 15 violations
Yes 21
D
33 Ridgewood Twp-0251 14 violations
Yes 12
D+
34 Denville Twp.-1408 14 violations
Yes 4
F
35 Manchester Twp.-1518 13 violations
Yes 23
F
36 Lakewood Twp.-1514 13 violations
Yes 3
B-
37 Mantua Twp.-0810 13 violations
Yes 28
F
38 Washington Twp.-1438 13 violations
Yes 22
F
39 Winslow Twp.-0436 12 violations
Yes 37
F
40 Fair Lawn Boro-0217 12 violations
Yes 8
F
41 Livingston Twp.-0710 12 violations
Yes 10
C
42 Washington Twp.-0818 11 violations
Yes 0
F
43 Kinnelon Boro-1415 11 violations
Yes 20
D
44 Boonton Twp.-1402 11 violations
Yes 0
C+
45 Mountain Lakes Boro-1425 11 violations
Yes 0
C+
46 Hawthorne Boro-1604 10 violations
Yes 3
D+
47 Lower Twp.-0505 10 violations
Yes 1
C+
48 Pitman Boro-0815 10 violations
Yes 11
B
49 Southampton Twp.-0333 10 violations
Yes 9
D
50 Harding Twp.-1413 9 violations
Yes 2
F
51 Lawrence Twp.-1107 9 violations
Yes 40
F
52 Toms River-1507 9 violations
Yes 13
B
53 Morris Twp.-1422 9 violations
Yes 2
D+
54 Evesham Twp.-0313 9 violations
Yes 1
A-
55 Stafford Twp.-1530 9 violations
Yes 3
B
56 Monroe Twp.-0811 9 violations
Yes 9
C
57 Plumstead Twp.-1523 9 violations
Yes 5
C+
58 Upper Deerfield Twp.-0613 9 violations
Yes 27
B-
59 Gloucester Twp.-0415 8 violations
Yes 1
B-
60 Chatham Boro-1404 8 violations
Yes 5
D+
61 Avalon Boro-0501 8 violations
Yes 2
B
62 Wall Twp.-1352 8 violations
Yes 5
C+
63 Barnegat Twp.-1533 8 violations
Yes 5
C+
64 Maple Shade Twp.-0319 8 violations
Yes 2
C+
65 Verona Boro-0720 8 violations
Yes 5
F
66 New Hanover Twp.-0325 8 violations
Yes 4
B+
67 Mine Hill Twp.-1420 8 violations
Yes 5
C
68 Ogdensburg Boro-1916 8 violations
Yes 2
B
69 Alpha Boro-2102 8 violations
Yes 5
C-
70 Sussex Boro-1921 8 violations
Yes 34
D+
71 Clementon Boro-0411 7 violations
Yes 0
C+
72 Haddon Twp.-0416 7 violations
Yes 0
C+
73 Mendham Twp.-1419 7 violations
Yes 2
D+
74 Hopewell Twp.1106- 7 violations
Yes 39
F
75 Camden City-0408 7 violations
Yes 25
F
76 Deptford Twp.-0802 7 violations
Yes 3
B-
77 West Deptford Twp.-0820 7 violations
Yes 2
B
78 Boonton Town-1401 7 violations
Yes 9
F
79 Wharton Boro-1439 7 violations
Yes 1
B
80 Hohokus Boro-0228 7 violations
Yes 1
B+
81 Montague Twp.-1914 7 violations
Yes 0
A-
82 Newfield Boro-0813 7 violations
Yes 5
B+
83 Fair Haven Boro-1313 6 violations
Yes 4
C
84 Little Silver Boro-1323 6 violations
Yes 4
C
85 Red Bank Boro-1340 6 violations
Yes 4
C
86 Hanover Twp.-1412 6 violations
Yes 2
C-
87 Morris Plains Boro-1423 6 violations
Yes 2
C-
88 Morristown Town-1424 6 violations
Yes 2
C-
89 Dover Town-1409 6 violations
Yes 10
C-
90 Woodbury City-0822 6 violations
Yes 0
B
91 Surf City Boro-1531 6 violations
Yes 0
D
92 Bellmawr Boro-0404 6 violations
Yes 1
B-
93 Quinton Twp.-1711 6 violations
Yes 7
B-
94 Salem City-1712 6 violations
Yes 7
B-
95 Franklin Boro-1906 6 violations
Yes 6
B-
96 Stanhope Boro-1919 6 violations
Yes 0
C-
97 Mount Arlington Boro-1426 6 violations
Yes 6
C+
98 Maurice River Twp.-0609 6 violations
Yes 3
B+
99 Aberdeen Twp-1330 5 violations
Yes 22
F
100 Cherry Hill Twp.-0409 5 violations
Yes 8
C-
101 Bernardsville Boro-1803 5 violations
Yes 0
B+
102 Hoboken City-0905 5 violations
Yes 0
A-
103 Pennsauken Twp.-0427 5 violations
Yes 8
C-
104 Belleville Town-0701 5 violations
Yes 67
F
105 Marlboro Twp.-1328 5 violations
Yes 13
C+
106 Long Beach Twp.-1517 5 violations
Yes 0
F
107 Bridgeton City-0601 5 violations
Yes 55
D
108 Moorestown Twp.-0322 5 violations
Yes 5
F
109 Point Pleasant Boro-1524 5 violations
Yes 2
C-
110 Sea Isle City-0509 5 violations
Yes 0
A-
111 Ringwood Boro-1611 5 violations
Yes 19
F
112 Hamburg Boro-1909 5 violations
Yes 0
C+
113 Woodbury Heights Boro-0823 5 violations
Yes 0
A
114 Hampton Boro-1013 5 violations
Yes 1
B+
115 Elizabeth City- 2004 4 violations
Yes 8
C-
116 Middletown Twp.-1331 4 violations
Yes 9
C+
117 Audubon Boro-0401 4 violations
Yes 0
B
118 Audubon Park Boro-0402 4 violations
Yes 0
B
119 Barrington Boro-0403 4 violations
Yes 0
B
120 Beverly City-0302 4 violations
Yes 0
B
121 Cinnaminson Twp.-0308 4 violations
Yes 0
B
122 Delanco Twp.-0309 4 violations
Yes 0
B
123 Delran Twp.-0310 4 violations
Yes 0
B
124 Edgewater Park Twp.-0312 4 violations
Yes 0
B
125 Gibbsboro Boro-0413 4 violations
Yes 0
B
126 Haddon Heights Boro-0418 4 violations
Yes 0
B
127 Haddonfield Boro-0417 4 violations
Yes 0
B
128 Hi-Nella Boro-0419 4 violations
Yes 0
B
129 Laurel Springs Boro-0420 4 violations
Yes 0
B
130 Lawnside Boro-0421 4 violations
Yes 0
B
131 Lindenwold Boro-0422 4 violations
Yes 0
B
132 Magnolia Boro-0423 4 violations
Yes 0
B
133 Mount Ephraim Boro-0425 4 violations
Yes 0
B
134 Mount Laurel Twp.-0324 4 violations
Yes 1
B-
135 Oaklyn Boro-0426 4 violations
Yes 0
B
136 Palmyra Boro-0327 4 violations
Yes 0
B
137 Riverside Twp.-0330 4 violations
Yes 0
B
138 Riverton Boro-0331 4 violations
Yes 0
B
139 Runnemede Boro-0430 4 violations
Yes 0
B
140 Somerdale Boro-0431 4 violations
Yes 0
B
141 Stratford Boro-0432 4 violations
Yes 0
B
142 Voorhees Twp.-0434 4 violations
Yes 0
B
143 Bloomfield Town-0702 4 violations
Yes 75
F
144 North Brunswick Twp.-1215 4 violations
Yes 17
F
145 Garfield City-0221 4 violations
Yes 13
B
146 Orange City-0717 4 violations
Yes 5
C+
147 Burlington Twp.-0306 4 violations
Yes 0
B-
148 Ocean Twp.-1520 4 violations
Yes 2
B+
149 Seaside Park Boro-1527 4 violations
Yes 1
A-
150 Pennsville Twp.-1708 4 violations
Yes 5
C-
151 Oakland Boro-0242 4 violations
Yes 2
B-
152 East Hanover Twp.-1410 4 violations
Yes 8
C+
153 Lincoln Park Boro-1416 4 violations
Yes 24
F
154 Waldwick Boro-0264 4 violations
Yes 2
F
155 Keansburg Boro-1321 4 violations
Yes 6
F
156 Newton Town-1915 4 violations
Yes 51
B-
157 Bloomingdale Boro-1601 4 violations
Yes 14
D+
158 Barnegat Light Boro-1501 4 violations
Yes 0
A-
159 Tewksbury Twp.-1024 4 violations
Yes 1
B
160 Netcong Boro-1428 4 violations
Yes 1
B+
161 Essex Fells Boro-0706 4 violations
Yes 1
B+
162 Wrightstown Boro-0340 4 violations
Yes 0
A-
163 Delaware Twp.-1007 4 violations
Yes 16
B
164 Lodi Boro-0231 3 violations
Yes 4
C+
165 Lavalette Boro-1515 3 violations
Yes 1
B
166 Hillside Twp.-2007 3 violations
Yes 32
C
167 Irvington Town-0709 3 violations
Yes 32
C
168 Woodbridge Twp.-1225 3 violations
Yes 1
B
169 Oxford Twp.-2117 3 violations
Yes 12
F
170 Pleasantville City-0119 3 violations
Yes 4
B-
171 East Orange City-0705 3 violations
Yes 35
F
172 New Brunswick City-1214 3 violations
Yes 46
D+
173 Freehold Twp.-1316 3 violations
Yes 8
D+
174 Montclair Town-0713 3 violations
Yes 1
B
175 Cape May City-0502 3 violations
Yes 9
B
176 Stone Harbor Boro-0510 3 violations
Yes 2
B+
177 Nutley Town-0716 3 violations
Yes 13
C
178 Little Egg Harbor-1516 3 violations
Yes 1
A
179 Hackettstown Town-2108 3 violations
Yes 2
B-
180 Lyndhurst Twp-0232 3 violations
Yes 2
B+
181 Randolph Twp.-1432 3 violations
Yes 3
B+
182 Carney'S Point Twp.-1713 3 violations
Yes 3
B-
183 Pequannock Twp.-1431 3 violations
Yes 10
C
184 Berkeley Twp.-1505 3 violations
Yes 2
C+
185 Haledon Boro-1603 3 violations
Yes 22
C+
186 Burlington City-0305 3 violations
Yes 37
B
187 Florham Park Boro-1411 3 violations
Yes 0
C-
188 Spotswood Boro-1224 3 violations
Yes 1
B
189 Butler Boro-1403 3 violations
Yes 12
C
190 Rockaway Boro-1434 3 violations
Yes 3
B
191 Greenwich Twp.-0807 3 violations
Yes 1
B-
192 Flemington Boro-1009 3 violations
Yes 66
F
193 High Bridge Boro-1014 3 violations
Yes 3
C-
194 Hopewell Boro-1105 3 violations
Yes 3
C
195 Pemberton Boro-0328 3 violations
Yes 1
A-
196 Union Twp.-1025 3 violations
Yes 1
B+
197 Monroe Twp.-1213 2 violations
Yes 6
F
198 Asbury Park City-1303 2 violations
Yes 1
B+
199 Bay Head Boro-1502 2 violations
Yes 1
B+
200 Bradley Beach Boro-1307 2 violations
Yes 1
B+
201 Brick Twp.-1506 2 violations
Yes 2
B
202 Eatontown Boro-1311 2 violations
Yes 1
B+
203 Holmdel Twp.-1318 2 violations
Yes 1
B+
204 Long Branch City-1325 2 violations
Yes 1
B+
205 Neptune City Boro-1335 2 violations
Yes 1
B+
206 Neptune Twp.-1334 2 violations
Yes 1
B+
207 Ocean Twp.-1337 2 violations
Yes 1
B+
208 Oceanport Boro-1338 2 violations
Yes 1
B+
209 Rumson Boro-1342 2 violations
Yes 1
B+
210 Shrewsbury Boro-1345 2 violations
Yes 1
B+
211 Tinton Falls-1336 2 violations
Yes 1
B+
212 Union Beach Boro-1350 2 violations
Yes 1
B+
213 West Long Branch Boro-1353 2 violations
Yes 1
B+
214 Newark-0714 2 violations
Yes 32
B-
215 Jersey City-0906 2 violations
Yes 5
B
216 Wildwood City-0514 2 violations
Yes 6
B-
217 Belvidere Town-2103 2 violations
Yes 0
B+
218 Galloway Twp-0111 2 violations
Yes 9
C-
219 Old Bridge Twp.-1209 2 violations
Yes 14
C+
220 Bayonne City-0901 2 violations
Yes 1
B+
221 East Brunswick Twp.-1204 2 violations
Yes 17
F
222 Sayreville Boro-1219 2 violations
Yes 2
B
223 Kearny Town-0907 2 violations
Yes 2
B+
224 Hamilton Twp.-1103 2 violations
Yes 37
F
225 Millville City-0610 2 violations
Yes 3
F
226 Rahway City-2013 2 violations
Yes 12
B
227 East Windsor Twp.-1101 2 violations
Yes 1
A-
228 Ventnor City-0122 2 violations
Yes 7
B+
229 Montville Twp.-1421 2 violations
Yes 7
C
230 Elmwood Park Boro-0211 2 violations
Yes 12
B-
231 South Orange Village-0719 2 violations
Yes 1
B
232 Saddle Brook Twp-0257 2 violations
Yes 13
B-
233 Cedar Grove Twp.-0704 2 violations
Yes 3
B
234 Hammonton Town-0113 2 violations
Yes 38
C+
235 Florence Twp.-0315 2 violations
Yes 1
B
236 Totowa Boro-1612 2 violations
Yes 1
B-
237 Washington Boro-2121 2 violations
Yes 0
B+
238 Wanaque Boro-1613 2 violations
Yes 10
D
239 Manalapan Twp.-1326 2 violations
Yes 1
B+
240 Matawan Boro-1329 2 violations
Yes 8
B
241 Glen Ridge Boro-0708 2 violations
Yes 1
B
242 Milltown Boro-1212 2 violations
Yes 15
F
243 Woolwich Twp.-0824 2 violations
Yes 1
B+
244 Harvey Cedars Boro-1509 2 violations
Yes 0
B+
245 Paulsboro Boro-0814 2 violations
Yes 6
B+
246 Avon-By-The-Sea Boro-1305 2 violations
Yes 3
B
247 Spring L Heights Boro-1349 2 violations
Yes 1
B+
248 West Cape May Boro-0512 2 violations
Yes 0
A-
249 Woodbine Boro-0516 2 violations
Yes 5
C
250 National Park Boro-0812 2 violations
Yes 0
A-
251 Lakehurst Boro-1513 2 violations
Yes 3
B+
252 Chesterfield Twp.-0307 2 violations
Yes 0
D
253 Mansfield Twp.-0318 2 violations
Yes 0
A-
254 East Newark Boro-0902 2 violations
Yes 2
B+
255 Branchville Boro-1903 2 violations
Yes 3
C+
256 Colts Neck Twp.-1309 2 violations
Yes 17
D+
257 Upper Twp.-0511 2 violations
Yes 0
A-
258 Califon Boro-1004 2 violations
Yes 0
B
259 Hampton Twp.-1910 2 violations
Yes 1
C+
260 Downe Twp.-0604 2 violations
Yes 0
A-
261 Rocky Hill Boro-1817 2 violations
Yes 0
A-
262 Stockton Boro-1023 2 violations
Yes 3
D+
263 Green Twp.-1908 2 violations
Yes 5
D
264 Alpine Boro-0202 1 violations
Yes 2
B-
265 Bergenfield Boro-0203 1 violations
Yes 2
B-
266 Bogota Boro-0204 1 violations
Yes 2
B-
267 Carlstadt Boro-0205 1 violations
Yes 2
B-
268 Cliffside Park Boro-0206 1 violations
Yes 2
B-
269 Closter Boro-0207 1 violations
Yes 2
B-
270 Cresskill Boro-0208 1 violations
Yes 2
B-
271 Demarest Boro-0209 1 violations
Yes 2
B-
272 Dumont Boro-0210 1 violations
Yes 2
B-
273 East Rutherford Boro-0212 1 violations
Yes 2
B-
274 Edgewater Boro-0213 1 violations
Yes 2
B-
275 Emerson Boro-0214 1 violations
Yes 2
B-
276 Englewood City-0215 1 violations
Yes 2
B-
277 Englewood Cliffs Boro-0216 1 violations
Yes 2
B-
278 Fairview Boro-0218 1 violations
Yes 2
B-
279 Fort Lee Boro-0219 1 violations
Yes 2
B-
280 Guttenberg Town-0903 1 violations
Yes 2
B-
281 Hackensack City-0223 1 violations
Yes 2
B-
282 Harrington Park Boro-0224 1 violations
Yes 2
B-
283 Hasbrouck Heights-0225 1 violations
Yes 2
B-
284 Haworth Boro-0226 1 violations
Yes 2
B-
285 Leonia Boro-0229 1 violations
Yes 2
B-
286 Little Ferry Boro-0230 1 violations
Yes 2
B-
287 Maywood Boro-0234 1 violations
Yes 2
B-
288 Moonachie Boro-0237 1 violations
Yes 2
B-
289 New Milford Boro-0238 1 violations
Yes 2
B-
290 North Bergen Twp.-0908 1 violations
Yes 2
B-
291 Northvale Boro-0240 1 violations
Yes 2
B-
292 Norwood Boro-0241 1 violations
Yes 2
B-
293 Old Tappan Boro-0243 1 violations
Yes 2
B-
294 Oradell Boro-0244 1 violations
Yes 2
B-
295 Palisades Park Boro-0245 1 violations
Yes 2
B-
296 Paramus Boro-0246 1 violations
Yes 2
B-
297 Ridgefield Boro-0249 1 violations
Yes 2
B-
298 Ridgefield Park Twp-0250 1 violations
Yes 2
B-
299 River Edge Boro-0252 1 violations
Yes 2
B-
300 River Vale Twp-0253 1 violations
Yes 2
B-
301 Rochelle Park Twp-0254 1 violations
Yes 2
B-
302 Rockleigh Boro-0255 1 violations
Yes 2
B-
303 Rutherford Boro-0256 1 violations
Yes 2
B-
304 Secaucus Town-0909 1 violations
Yes 2
B-
305 South Hackensack Twp-.0259 1 violations
Yes 2
B-
306 Teaneck Twp-.0260 1 violations
Yes 2
B-
307 Tenafly Boro-0261 1 violations
Yes 2
B-
308 Teterboro Boro-0262 1 violations
Yes 2
B-
309 Upper Saddle River-0263 1 violations
Yes 2
B-
310 Washington Twp.-0266 1 violations
Yes 2
B-
311 Weehawken Twp.-0911 1 violations
Yes 2
B-
312 West New York Town-0912 1 violations
Yes 2
B-
313 Westwood Boro-0267 1 violations
Yes 2
B-
314 Wood-Ridge Boro-0269 1 violations
Yes 2
B-
315 Little Falls Twp.-1605 1 violations
Yes 12
B
316 Bedminster Twp.-1801 1 violations
Yes 0
B+
317 Berkeley Heights Twp.-2001 1 violations
Yes 0
B+
318 Bernards Twp.-1802 1 violations
Yes 0
B+
319 Chester Twp.-1407 1 violations
Yes 0
B+
320 Far Hills Boro-1807 1 violations
Yes 0
B+
321 Franklin Twp.-2105 1 violations
Yes 0
B+
322 Frenchtown Boro-1011 1 violations
Yes 0
B+
323 Maplewood Twp.-0711 1 violations
Yes 0
B+
324 Mendham Boro-1418 1 violations
Yes 0
B+
325 Millburn Twp.-0712 1 violations
Yes 0
B+
326 New Providence Boro-2011 1 violations
Yes 0
B+
327 Springfield Twp.-2017 1 violations
Yes 0
B+
328 Summit City-2018 1 violations
Yes 0
B+
329 Union Twp-.2019 1 violations
Yes 0
B+
330 Warren Twp.-1820 1 violations
Yes 0
B+
331 Ewing Twp.-1102 1 violations
Yes 35
D
332 Trenton City-1111 1 violations
Yes 35
D
333 Atlantic City-0102 1 violations
Yes 4
B
334 Franklin Twp.-1808 1 violations
Yes 16
D+
335 Perth Amboy City--1216 1 violations
Yes 8
C+
336 Merchantville Boro-0424 1 violations
Yes 8
C+
337 Lacey Twp.-1512 1 violations
Yes 2
B+
338 Hamilton Twp-0112 1 violations
Yes 4
C+
339 Weymouth Twp-.0123 1 violations
Yes 4
C
340 Beach Haven Boro-1503 1 violations
Yes 1
A-
341 Belmar Boro-1306 1 violations
Yes 3
B-
342 Seaside Heights Boro-1526 1 violations
Yes 0
A-
343 South River Boro-1223 1 violations
Yes 7
F
344 Madison Boro-1417 1 violations
Yes 7
B-
345 North Arlington Boro-0239 1 violations
Yes 7
B+
346 Ship Bottom Boro-1528 1 violations
Yes 2
A-
347 Harrison Town-0904 1 violations
Yes 3
B+
348 Oldmans Twp.-1706 1 violations
Yes 3
B-
349 Penns Grove Boro- 1707 1 violations
Yes 1
B+
350 Berlin Boro-0405 1 violations
Yes 1
B+
351 Point P. Beach Boro-1525 1 violations
Yes 1
B
352 Wallington Boro-0265 1 violations
Yes 4
D+
353 Longport Boro-0115 1 violations
Yes 3
A
354 West Caldwell Boro-0721 1 violations
Yes 3
C
355 Harrison Twp.-0808 1 violations
Yes 0
A-
356 Caldwell Boro-0703 1 violations
Yes 3
B-
357 Clayton Boro-0801 1 violations
Yes 0
A-
358 Logan Twp.-0809 1 violations
Yes 1
B+
359 Tuckerton Boro-1532 1 violations
Yes 2
B-
360 North Caldwell Boro-0715 1 violations
Yes 3
B-
361 Westville Boro-0821 1 violations
Yes 4
B-
362 Woodland Park Boro-1616 1 violations
Yes 4
B
363 Franklin Lakes Boro-0220 1 violations
Yes 0
A-
364 Egg Harbor City-0107 1 violations
Yes 1
A-
365 Cape May Point Boro-0503 1 violations
Yes 0
B+
366 Lambertville City-1017 1 violations
Yes 3
A-
367 Ocean Gate Boro-1521 1 violations
Yes 0
A
368 South Belmar Boro-1347 1 violations
Yes 4
A-
369 Riverdale Boro-1433 1 violations
Yes 0
A-
370 Swedesboro Boro-0817 1 violations
Yes 0
B
371 Sea Girt Boro-1344 1 violations
Yes 0
B+
372 Englishtown Boro-1312 1 violations
Yes 1
B+
373 Wenonah Boro-0819 1 violations
Yes 0
A
374 Pine Beach Boro-1522 1 violations
Yes 0
A
375 Allentown Boro-1302 1 violations
Yes 0
A-
376 Helmetta Boro-1206 1 violations
Yes 1
B+
377 Island Heights Boro-1510 1 violations
Yes 2
B
378 Glen Gardner Boro-1012 1 violations
Yes 4
D+
379 Winfield Twp.-2021 1 violations
Yes 1
A-
380 Milford Boro-1020 1 violations
Yes 5
A-
381 Elmer Boro-1702 1 violations
Yes 1
A
382 Waterford Twp.-0435 1 violations
Yes 1
B+
383 Blairstown Twp.-2104 1 violations
Yes 0
A-
384 Englewood 1 violations
Yes 10
C
385 Andover Boro-1901 1 violations
Yes 0
A-
FAQ

Frequently asked questions about nitrate in New Jersey

Is nitrate in New Jersey tap water dangerous?

Yes — 385 cities in New Jersey have nitrate-related violations. The EPA MCL is 10 mg/L. Nitrate is especially dangerous for infants under six months, where it can cause methemoglobinemia ("blue baby syndrome"). Adults face lower acute risk, but chronic exposure is linked to thyroid disease and certain cancers.

How can I remove nitrate from my drinking water?

Reverse osmosis, ion exchange, and distillation are effective at removing nitrate. Standard carbon filters (including most pitcher and faucet-mount filters) do NOT remove nitrate. If you rely on a private well in an agricultural area, have your water tested annually for nitrate.

What causes high nitrate levels in New Jersey water?

Nitrate contamination comes primarily from agricultural fertilizer runoff, septic system leaching, and animal feedlot operations. Rural communities near intensive farming are most at risk. Shallow wells are particularly vulnerable. Heavy rainfall can spike nitrate levels as it washes fertilizer into groundwater and surface water supplies.

More contaminants

Other contaminants in New Jersey

Lead in New Jersey
Ranked by 90th percentile level (ppb)
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PFAS in New Jersey
Ranked by compounds detected
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Copper in New Jersey
Ranked by 90th percentile level (mg/L)
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HAA5 in New Jersey
Ranked by average concentration (µg/L)
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Chromium-6 in New Jersey
Ranked by max detected (µg/L)
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Arsenic in New Jersey
Ranked by violation count
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Strontium in New Jersey
Ranked by max detected (µg/L)
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1,4-Dioxane in New Jersey
Ranked by max detected (µg/L)
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Manganese in New Jersey
Ranked by max detected (µg/L)
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Vanadium in New Jersey
Ranked by max detected (µg/L)
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Chlorate in New Jersey
Ranked by max detected (µg/L)
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Molybdenum in New Jersey
Ranked by max detected (µg/L)
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Cobalt in New Jersey
Ranked by max detected (µg/L)
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Lithium in New Jersey
Ranked by max detected (µg/L)
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NDMA in New Jersey
Ranked by max detected (ng/L)
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Perchlorate in New Jersey
Ranked by max detected (µg/L)
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All states

Nitrate in drinking water by state

AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming
← Nitrate contamination overview Explore New Jersey water quality → National Nitrate map →