Nitrate Contamination
Nitrate in New Jersey Drinking Water
Ranked by nitrate violation count · Data from EPA SDWIS & UCMR
394
Cities Tested
394
Has Violations
100%
% Has Violations
5.8 violations
State Avg
▼ 0% vs national
vs National
331
Health Violations
Analysis
Nitrate in New Jersey: what the data shows
New Jersey has 394 cities with nitrate-related violations. The EPA MCL for nitrate is 10 mg/L (measured as nitrogen). The state has 394 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%
394 of 394 cities
← = Exactly at national rate
National avg
100%
8001 of 8001 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.
Worst Offenders
Top 10 cities by nitrate level in New Jersey
All Cities
All New Jersey cities ranked by nitrate level
| # | City | Level | Level | Violations? | Violations | Grade |
|---|---|---|---|---|---|---|
| 1 | Summit City-2018 | 74 violations | Yes | 42 | F | |
| 2 | Vineland City-0614 | 69 violations | Yes | 70 | F | |
| 3 | Kinnelon Boro-1415 | 58 violations | Yes | 41 | F | |
| 4 | Vernon Twp.-1922 | 58 violations | Yes | 16 | F | |
| 5 | Sparta Twp.-1918 | 56 violations | Yes | 11 | F | |
| 6 | Parsippany Troy-Hills-1429 | 55 violations | Yes | 5 | F | |
| 7 | Pittsgrove Twp.-1710 | 39 violations | Yes | 76 | D | |
| 8 | Thonotosassa | 33 violations | Yes | 8 | B | |
| 9 | Lebanon Twp.-1019 | 32 violations | Yes | 20 | D | |
| 10 | Roxbury Twp.-1436 | 31 violations | Yes | 8 | D+ | |
| 11 | Hopatcong Boro-1912 | 31 violations | Yes | 3 | D+ | |
| 12 | Jefferson Twp.-1414 | 28 violations | Yes | 36 | F | |
| 13 | Byram Twp.-1904 | 27 violations | Yes | 29 | D | |
| 14 | Jackson Twp.-1511 | 26 violations | Yes | 18 | F | |
| 15 | Clinton Town -1005 | 25 violations | Yes | 2 | D | |
| 16 | Guttenberg Town-0903 | 24 violations | Yes | 4 | D | |
| 17 | Guttenberg Town-0903 | 24 violations | Yes | 4 | D | |
| 18 | Guttenberg Town-0903 | 24 violations | Yes | 4 | D | |
| 19 | Rockaway Twp.-1435 | 24 violations | Yes | 8 | F | |
| 20 | Middle Twp.-0506 | 24 violations | Yes | 2 | D | |
| 21 | Hillsdale Boro-0227 | 23 violations | Yes | 2 | C+ | |
| 22 | Hillsdale Boro-0227 | 23 violations | Yes | 2 | C+ | |
| 23 | Ramsey Boro-0248 | 22 violations | Yes | 56 | F | |
| 24 | Mannington Twp.-1705 | 22 violations | Yes | 8 | C- | |
| 25 | Medford Twp.-0320 | 20 violations | Yes | 2 | C+ | |
| 26 | Stillwater Twp.-1920 | 20 violations | Yes | 13 | D+ | |
| 27 | Hardyston Twp.-1911 | 19 violations | Yes | 10 | F | |
| 28 | Franklin Twp.-0805 | 19 violations | Yes | 19 | F | |
| 29 | North Hanover Twp.-0326 | 18 violations | Yes | 31 | D | |
| 30 | Fairfield Twp.-0605 | 17 violations | Yes | 7 | F | |
| 31 | Glassboro Boro-0806 | 16 violations | Yes | 16 | C | |
| 32 | Woodstown Boro-1715 | 16 violations | Yes | 1 | B+ | |
| 33 | Woodstown Boro-1715 | 16 violations | Yes | 1 | B+ | |
| 34 | Mahwah Twp-0233 | 15 violations | Yes | 2 | C- | |
| 35 | Pemberton Twp.-0329 | 15 violations | Yes | 21 | D | |
| 36 | Ridgewood Twp-0251 | 14 violations | Yes | 12 | D+ | |
| 37 | Denville Twp.-1408 | 14 violations | Yes | 4 | F | |
| 38 | Freehold Twp.-1316 | 13 violations | Yes | 3 | B- | |
| 39 | Absecon City-0101 | 13 violations | Yes | 22 | F | |
| 40 | Manchester Twp.-1518 | 13 violations | Yes | 23 | F | |
| 41 | Mantua Twp.-0810 | 13 violations | Yes | 28 | F | |
| 42 | Washington Twp.-1438 | 13 violations | Yes | 22 | F | |
| 43 | Summit City-2018 | 12 violations | Yes | 10 | C | |
| 44 | Fair Lawn Boro-0217 | 12 violations | Yes | 8 | F | |
| 45 | Winslow Twp.-0436 | 12 violations | Yes | 37 | F | |
| 46 | Freehold Twp.-1316 | 11 violations | Yes | 3 | C- | |
| 47 | Washington Twp.-0818 | 11 violations | Yes | 0 | F | |
| 48 | Kinnelon Boro-1415 | 11 violations | Yes | 20 | F | |
| 49 | Parsippany Troy-Hills-1429 | 11 violations | Yes | 0 | C+ | |
| 50 | Parsippany Troy-Hills-1429 | 11 violations | Yes | 0 | C+ | |
| 51 | Hawthorne Boro-1604 | 10 violations | Yes | 3 | D+ | |
| 52 | Lower Twp.-0505 | 10 violations | Yes | 1 | C+ | |
| 53 | Pitman Boro-0815 | 10 violations | Yes | 11 | B | |
| 54 | Southampton Twp.-0333 | 10 violations | Yes | 9 | D | |
| 55 | Freehold Twp.-1316 | 9 violations | Yes | 13 | B- | |
| 56 | Summit City-2018 | 9 violations | Yes | 2 | F | |
| 57 | Lawrence Twp.-1107 | 9 violations | Yes | 40 | F | |
| 58 | Mendham Twp.-1419 | 9 violations | Yes | 2 | D+ | |
| 59 | Evesham Twp.-0313 | 9 violations | Yes | 1 | A- | |
| 60 | Stafford Twp.-1530 | 9 violations | Yes | 3 | B | |
| 61 | Monroe Twp.-0811 | 9 violations | Yes | 9 | C | |
| 62 | Plumstead Twp.-1523 | 9 violations | Yes | 5 | C+ | |
| 63 | Upper Deerfield Twp.-0613 | 9 violations | Yes | 27 | B- | |
| 64 | Burlington Twp.-0306 | 8 violations | Yes | 1 | B- | |
| 65 | Summit City-2018 | 8 violations | Yes | 5 | D+ | |
| 66 | Burlington Twp.-0306 | 8 violations | Yes | 2 | C+ | |
| 67 | Avalon Boro-0501 | 8 violations | Yes | 2 | B | |
| 68 | Wall Twp.-1352 | 8 violations | Yes | 5 | C+ | |
| 69 | Barnegat Twp.-1533 | 8 violations | Yes | 5 | C+ | |
| 70 | Verona Boro-0720 | 8 violations | Yes | 5 | F | |
| 71 | New Hanover Twp.-0325 | 8 violations | Yes | 4 | B+ | |
| 72 | Wharton Boro-1439 | 8 violations | Yes | 5 | C | |
| 73 | Ogdensburg Boro-1916 | 8 violations | Yes | 2 | B | |
| 74 | Alpha Boro-2102 | 8 violations | Yes | 5 | C- | |
| 75 | Sussex Boro-1921 | 8 violations | Yes | 34 | D+ | |
| 76 | Burlington Twp.-0306 | 7 violations | Yes | 25 | F | |
| 77 | Summit City-2018 | 7 violations | Yes | 2 | D+ | |
| 78 | Burlington Twp.-0306 | 7 violations | Yes | 0 | C+ | |
| 79 | Burlington Twp.-0306 | 7 violations | Yes | 0 | C+ | |
| 80 | Lawrence Twp.-1107 | 7 violations | Yes | 39 | F | |
| 81 | Deptford Twp.-0802 | 7 violations | Yes | 3 | B- | |
| 82 | West Deptford Twp.-0820 | 7 violations | Yes | 2 | B | |
| 83 | Boonton Town-1401 | 7 violations | Yes | 9 | F | |
| 84 | Wharton Boro-1439 | 7 violations | Yes | 1 | B | |
| 85 | Hohokus Boro-0228 | 7 violations | Yes | 1 | B+ | |
| 86 | Montague Twp.-1914 | 7 violations | Yes | 0 | A- | |
| 87 | Franklin Twp.-0805 | 7 violations | Yes | 5 | B+ | |
| 88 | White Twp.-2123 | 7 violations | Yes | 4 | C | |
| 89 | Freehold Twp.-1316 | 6 violations | Yes | 4 | C | |
| 90 | Freehold Twp.-1316 | 6 violations | Yes | 4 | C | |
| 91 | Freehold Twp.-1316 | 6 violations | Yes | 4 | C | |
| 92 | Burlington Twp.-0306 | 6 violations | Yes | 1 | B- | |
| 93 | Mendham Twp.-1419 | 6 violations | Yes | 2 | C- | |
| 94 | Mendham Twp.-1419 | 6 violations | Yes | 2 | C- | |
| 95 | Mendham Twp.-1419 | 6 violations | Yes | 2 | C- | |
| 96 | Dover Town-1409 | 6 violations | Yes | 10 | C- | |
| 97 | Woodbury City-0822 | 6 violations | Yes | 0 | B | |
| 98 | Surf City Boro-1531 | 6 violations | Yes | 0 | D | |
| 99 | Mannington Twp.-1705 | 6 violations | Yes | 7 | B- | |
| 100 | Mannington Twp.-1705 | 6 violations | Yes | 7 | B- | |
| 101 | Franklin Boro-1906 | 6 violations | Yes | 6 | B- | |
| 102 | Mount Arlington Boro-1426 | 6 violations | Yes | 6 | C+ | |
| 103 | Stanhope Boro-1919 | 6 violations | Yes | 0 | C- | |
| 104 | Maurice River Twp.-0609 | 6 violations | Yes | 3 | B+ | |
| 105 | West Monroe (T) | 6 violations | Yes | 6 | A- | |
| 106 | Shamong Twp.-0332 | 6 violations | Yes | 1 | B- | |
| 107 | Freehold Twp.-1316 | 5 violations | Yes | 22 | F | |
| 108 | Hillside Twp.-2007 | 5 violations | Yes | 67 | F | |
| 109 | Burlington Twp.-0306 | 5 violations | Yes | 8 | C- | |
| 110 | Burlington Twp.-0306 | 5 violations | Yes | 8 | C- | |
| 111 | Burlington Twp.-0306 | 5 violations | Yes | 5 | F | |
| 112 | Summit City-2018 | 5 violations | Yes | 0 | B+ | |
| 113 | Hoboken City-0905 | 5 violations | Yes | 0 | A- | |
| 114 | Marlboro Twp.-1328 | 5 violations | Yes | 13 | C+ | |
| 115 | Long Beach Twp.-1517 | 5 violations | Yes | 0 | F | |
| 116 | Bridgeton City-0601 | 5 violations | Yes | 55 | D | |
| 117 | Point Pleasant Boro-1524 | 5 violations | Yes | 2 | C- | |
| 118 | Ringwood Boro-1611 | 5 violations | Yes | 19 | F | |
| 119 | Sea Isle City-0509 | 5 violations | Yes | 0 | A- | |
| 120 | Hamburg Boro-1909 | 5 violations | Yes | 0 | C+ | |
| 121 | Woodbury Heights Boro-0823 | 5 violations | Yes | 0 | A | |
| 122 | Hampton Boro-1013 | 5 violations | Yes | 1 | B+ | |
| 123 | Elizabeth City- 2004 | 4 violations | Yes | 8 | C- | |
| 124 | Freehold Twp.-1316 | 4 violations | Yes | 6 | F | |
| 125 | Freehold Twp.-1316 | 4 violations | Yes | 9 | C+ | |
| 126 | Hillside Twp.-2007 | 4 violations | Yes | 75 | F | |
| 127 | Burlington Twp.-0306 | 4 violations | Yes | 1 | B- | |
| 128 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B- | |
| 129 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 130 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 131 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 132 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 133 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 134 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 135 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 136 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 137 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 138 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 139 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 140 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 141 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 142 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 143 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 144 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 145 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 146 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 147 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 148 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 149 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 150 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 151 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 152 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 153 | Burlington Twp.-0306 | 4 violations | Yes | 0 | B | |
| 154 | North Brunswick Twp.-1215 | 4 violations | Yes | 17 | F | |
| 155 | Garfield City-0221 | 4 violations | Yes | 13 | B | |
| 156 | Orange City-0717 | 4 violations | Yes | 5 | C+ | |
| 157 | Pequannock Twp.-1431 | 4 violations | Yes | 24 | F | |
| 158 | Barnegat Twp.-1533 | 4 violations | Yes | 2 | B+ | |
| 159 | Bloomingdale Boro-1601 | 4 violations | Yes | 14 | D+ | |
| 160 | Seaside Park Boro-1527 | 4 violations | Yes | 1 | A- | |
| 161 | Pennsville Twp.-1708 | 4 violations | Yes | 5 | C- | |
| 162 | Oakland Boro-0242 | 4 violations | Yes | 2 | B- | |
| 163 | East Hanover Twp.-1410 | 4 violations | Yes | 8 | C+ | |
| 164 | Waldwick Boro-0264 | 4 violations | Yes | 2 | F | |
| 165 | Newton Town-1915 | 4 violations | Yes | 51 | B- | |
| 166 | Barnegat Light Boro-1501 | 4 violations | Yes | 0 | A- | |
| 167 | Washington Twp.-1438 | 4 violations | Yes | 1 | B | |
| 168 | Netcong Boro-1428 | 4 violations | Yes | 1 | B+ | |
| 169 | Essex Fells Boro-0706 | 4 violations | Yes | 1 | B+ | |
| 170 | Wrightstown Boro-0340 | 4 violations | Yes | 0 | A- | |
| 171 | Delaware Twp.-1007 | 4 violations | Yes | 16 | B | |
| 172 | Guttenberg Town-0903 | 3 violations | Yes | 4 | C+ | |
| 173 | Hillside Twp.-2007 | 3 violations | Yes | 32 | C | |
| 174 | Hillside Twp.-2007 | 3 violations | Yes | 32 | C | |
| 175 | Freehold Twp.-1316 | 3 violations | Yes | 8 | D+ | |
| 176 | Freehold Twp.-1316 | 3 violations | Yes | 1 | B | |
| 177 | Hillside Twp.-2007 | 3 violations | Yes | 35 | F | |
| 178 | Woodbridge Twp.-1225 | 3 violations | Yes | 1 | B | |
| 179 | Summit City-2018 | 3 violations | Yes | 0 | C- | |
| 180 | Summit City-2018 | 3 violations | Yes | 12 | F | |
| 181 | Absecon City-0101 | 3 violations | Yes | 4 | B- | |
| 182 | New Brunswick City-1214 | 3 violations | Yes | 46 | D+ | |
| 183 | Montclair Town-0713 | 3 violations | Yes | 1 | B | |
| 184 | Cape May City-0502 | 3 violations | Yes | 9 | B | |
| 185 | Stone Harbor Boro-0510 | 3 violations | Yes | 2 | B+ | |
| 186 | Berkeley Twp.-1505 | 3 violations | Yes | 2 | C+ | |
| 187 | Nutley Town-0716 | 3 violations | Yes | 13 | C | |
| 188 | Little Egg Harbor-1516 | 3 violations | Yes | 1 | A | |
| 189 | Hackettstown Town-2108 | 3 violations | Yes | 2 | B- | |
| 190 | Lyndhurst Twp-0232 | 3 violations | Yes | 2 | B+ | |
| 191 | Pequannock Twp.-1431 | 3 violations | Yes | 10 | C | |
| 192 | Randolph Twp.-1432 | 3 violations | Yes | 3 | B+ | |
| 193 | Oldmans Twp.-1706 | 3 violations | Yes | 3 | B- | |
| 194 | Haledon Boro-1603 | 3 violations | Yes | 22 | C+ | |
| 195 | Burlington City-0305 | 3 violations | Yes | 37 | B | |
| 196 | Spotswood Boro-1224 | 3 violations | Yes | 1 | B | |
| 197 | Kinnelon Boro-1415 | 3 violations | Yes | 12 | C | |
| 198 | Rockaway Boro-1434 | 3 violations | Yes | 3 | B | |
| 199 | Greenwich Twp.-0807 | 3 violations | Yes | 1 | B- | |
| 200 | Flemington Boro-1009 | 3 violations | Yes | 66 | F | |
| 201 | High Bridge Boro-1014 | 3 violations | Yes | 3 | C- | |
| 202 | Hopewell Boro-1105 | 3 violations | Yes | 3 | C | |
| 203 | Pemberton Boro-0328 | 3 violations | Yes | 1 | A- | |
| 204 | Union Twp.-1025 | 3 violations | Yes | 1 | B+ | |
| 205 | Elizabeth City- 2004 | 2 violations | Yes | 6 | F | |
| 206 | Freehold Twp.-1316 | 2 violations | Yes | 2 | B | |
| 207 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 208 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 209 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 210 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 211 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 212 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 213 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 214 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 215 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 216 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 217 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 218 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 219 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 220 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 221 | Freehold Twp.-1316 | 2 violations | Yes | 1 | B+ | |
| 222 | Hillside Twp.-2007 | 2 violations | Yes | 32 | B- | |
| 223 | Jersey City-0906 | 2 violations | Yes | 5 | B | |
| 224 | Lawrence Twp.-1107 | 2 violations | Yes | 37 | F | |
| 225 | Summit City-2018 | 2 violations | Yes | 1 | B | |
| 226 | Summit City-2018 | 2 violations | Yes | 0 | B+ | |
| 227 | Wildwood City-0514 | 2 violations | Yes | 6 | B- | |
| 228 | Absecon City-0101 | 2 violations | Yes | 9 | C- | |
| 229 | Old Bridge Twp.-1209 | 2 violations | Yes | 14 | C+ | |
| 230 | Bayonne City-0901 | 2 violations | Yes | 1 | B+ | |
| 231 | Manalapan Twp.-1326 | 2 violations | Yes | 1 | B+ | |
| 232 | East Brunswick Twp.-1204 | 2 violations | Yes | 17 | F | |
| 233 | Sayreville Boro-1219 | 2 violations | Yes | 2 | B | |
| 234 | Kearny Town-0907 | 2 violations | Yes | 2 | B+ | |
| 235 | Freehold Twp.-1316 | 2 violations | Yes | 17 | D+ | |
| 236 | Millville City-0610 | 2 violations | Yes | 3 | F | |
| 237 | Rahway City-2013 | 2 violations | Yes | 12 | B | |
| 238 | East Windsor Twp.-1101 | 2 violations | Yes | 1 | A- | |
| 239 | Ventnor City-0122 | 2 violations | Yes | 7 | B+ | |
| 240 | Montville Twp.-1421 | 2 violations | Yes | 7 | C | |
| 241 | Elmwood Park Boro-0211 | 2 violations | Yes | 12 | B- | |
| 242 | Saddle Brook Twp-0257 | 2 violations | Yes | 13 | B- | |
| 243 | Woolwich Twp.-0824 | 2 violations | Yes | 1 | B+ | |
| 244 | Cedar Grove Twp.-0704 | 2 violations | Yes | 3 | B | |
| 245 | Hammonton Town-0113 | 2 violations | Yes | 38 | C+ | |
| 246 | Florence Twp.-0315 | 2 violations | Yes | 1 | B | |
| 247 | Totowa Boro-1612 | 2 violations | Yes | 1 | B- | |
| 248 | Washington Boro-2121 | 2 violations | Yes | 0 | B+ | |
| 249 | Ringwood Boro-1611 | 2 violations | Yes | 10 | D | |
| 250 | Old Bridge Twp.-1209 | 2 violations | Yes | 8 | B | |
| 251 | Glen Ridge Boro-0708 | 2 violations | Yes | 1 | B | |
| 252 | Milltown Boro-1212 | 2 violations | Yes | 15 | F | |
| 253 | Harvey Cedars Boro-1509 | 2 violations | Yes | 0 | B+ | |
| 254 | Paulsboro Boro-0814 | 2 violations | Yes | 6 | B+ | |
| 255 | Lakehurst Boro-1513 | 2 violations | Yes | 3 | B+ | |
| 256 | Avon-By-The-Sea Boro-1305 | 2 violations | Yes | 3 | B | |
| 257 | Spring L Heights Boro-1349 | 2 violations | Yes | 1 | B+ | |
| 258 | West Cape May Boro-0512 | 2 violations | Yes | 0 | A- | |
| 259 | Woodbine Boro-0516 | 2 violations | Yes | 5 | C | |
| 260 | National Park Boro-0812 | 2 violations | Yes | 0 | A- | |
| 261 | Chesterfield Twp.-0307 | 2 violations | Yes | 0 | D | |
| 262 | Mansfield Twp.-0318 | 2 violations | Yes | 0 | A- | |
| 263 | East Newark Boro-0902 | 2 violations | Yes | 2 | B+ | |
| 264 | Branchville Boro-1903 | 2 violations | Yes | 3 | C+ | |
| 265 | Upper Twp.-0511 | 2 violations | Yes | 0 | A- | |
| 266 | Hampton Twp.-1910 | 2 violations | Yes | 1 | C+ | |
| 267 | Califon Boro-1004 | 2 violations | Yes | 0 | B | |
| 268 | Green Twp.-1908 | 2 violations | Yes | 5 | D | |
| 269 | Downe Twp.-0604 | 2 violations | Yes | 0 | A- | |
| 270 | Rocky Hill Boro-1817 | 2 violations | Yes | 0 | A- | |
| 271 | Stockton Boro-1023 | 2 violations | Yes | 3 | D+ | |
| 272 | Mansfield Twp.-2116 | 2 violations | Yes | 0 | C+ | |
| 273 | Guttenberg Town-0903 | 1 violations | Yes | 4 | D+ | |
| 274 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 275 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 276 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 277 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 278 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 279 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 280 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 281 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 282 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 283 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 284 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 285 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 286 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 287 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 288 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 289 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 290 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 291 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 292 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 293 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 294 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 295 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 296 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 297 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 298 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 299 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 300 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 301 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 302 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 303 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 304 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 305 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 306 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 307 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 308 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 309 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 310 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 311 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 312 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 313 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 314 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 315 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 316 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 317 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 318 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 319 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 320 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 321 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 322 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 323 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 324 | Guttenberg Town-0903 | 1 violations | Yes | 2 | B- | |
| 325 | Little Falls Twp.-1605 | 1 violations | Yes | 12 | B | |
| 326 | Summit City-2018 | 1 violations | Yes | 3 | B- | |
| 327 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 328 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 329 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 330 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 331 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 332 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 333 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 334 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 335 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 336 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 337 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 338 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 339 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 340 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 341 | Summit City-2018 | 1 violations | Yes | 0 | B+ | |
| 342 | Lawrence Twp.-1107 | 1 violations | Yes | 35 | D | |
| 343 | Lawrence Twp.-1107 | 1 violations | Yes | 35 | D | |
| 344 | Atlantic City-0102 | 1 violations | Yes | 4 | B | |
| 345 | Franklin Twp.-1808 | 1 violations | Yes | 16 | D+ | |
| 346 | Perth Amboy City--1216 | 1 violations | Yes | 8 | C+ | |
| 347 | Camden City-0408 | 1 violations | Yes | 8 | C+ | |
| 348 | Lacey Twp.-1512 | 1 violations | Yes | 2 | B+ | |
| 349 | Hamilton Twp-0112 | 1 violations | Yes | 4 | C | |
| 350 | Hamilton Twp-0112 | 1 violations | Yes | 4 | C+ | |
| 351 | Beach Haven Boro-1503 | 1 violations | Yes | 1 | A- | |
| 352 | Belmar Boro-1306 | 1 violations | Yes | 3 | B- | |
| 353 | Seaside Heights Boro-1526 | 1 violations | Yes | 0 | A- | |
| 354 | South River Boro-1223 | 1 violations | Yes | 7 | F | |
| 355 | Madison Boro-1417 | 1 violations | Yes | 7 | B- | |
| 356 | North Arlington Boro-0239 | 1 violations | Yes | 7 | B+ | |
| 357 | Ship Bottom Boro-1528 | 1 violations | Yes | 2 | A- | |
| 358 | Oldmans Twp.-1706 | 1 violations | Yes | 3 | B- | |
| 359 | Harrison Town-0904 | 1 violations | Yes | 3 | B+ | |
| 360 | Oldmans Twp.-1706 | 1 violations | Yes | 1 | B+ | |
| 361 | Berlin Boro-0405 | 1 violations | Yes | 1 | B+ | |
| 362 | Point P. Beach Boro-1525 | 1 violations | Yes | 1 | B | |
| 363 | Longport Boro-0115 | 1 violations | Yes | 3 | A | |
| 364 | West Caldwell Boro-0721 | 1 violations | Yes | 3 | C | |
| 365 | Harrison Twp.-0808 | 1 violations | Yes | 0 | A- | |
| 366 | Caldwell Boro-0703 | 1 violations | Yes | 3 | B- | |
| 367 | Clayton Boro-0801 | 1 violations | Yes | 0 | A- | |
| 368 | Woolwich Twp.-0824 | 1 violations | Yes | 1 | B+ | |
| 369 | Tuckerton Boro-1532 | 1 violations | Yes | 2 | B- | |
| 370 | Westville Boro-0821 | 1 violations | Yes | 4 | B- | |
| 371 | Woodland Park Boro-1616 | 1 violations | Yes | 4 | B | |
| 372 | Franklin Lakes Boro-0220 | 1 violations | Yes | 0 | A- | |
| 373 | Galloway Twp-0111 | 1 violations | Yes | 1 | A- | |
| 374 | Cape May Point Boro-0503 | 1 violations | Yes | 0 | B+ | |
| 375 | Lambertville City-1017 | 1 violations | Yes | 3 | A- | |
| 376 | Ocean Gate Boro-1521 | 1 violations | Yes | 0 | A | |
| 377 | South Belmar Boro-1347 | 1 violations | Yes | 4 | A- | |
| 378 | Riverdale Boro-1433 | 1 violations | Yes | 0 | A- | |
| 379 | Swedesboro Boro-0817 | 1 violations | Yes | 0 | B | |
| 380 | Sea Girt Boro-1344 | 1 violations | Yes | 0 | B+ | |
| 381 | Englishtown Boro-1312 | 1 violations | Yes | 1 | B+ | |
| 382 | Wenonah Boro-0819 | 1 violations | Yes | 0 | A | |
| 383 | Pine Beach Boro-1522 | 1 violations | Yes | 0 | A | |
| 384 | Allentown Boro-1302 | 1 violations | Yes | 0 | A- | |
| 385 | Helmetta Boro-1206 | 1 violations | Yes | 1 | B+ | |
| 386 | Island Heights Boro-1510 | 1 violations | Yes | 2 | B | |
| 387 | Glen Gardner Boro-1012 | 1 violations | Yes | 4 | D+ | |
| 388 | Winfield Twp.-2021 | 1 violations | Yes | 1 | A- | |
| 389 | Milford Boro-1020 | 1 violations | Yes | 5 | A- | |
| 390 | Waterford Twp.-0435 | 1 violations | Yes | 1 | B+ | |
| 391 | Elmer Boro-1702 | 1 violations | Yes | 1 | A | |
| 392 | Blairstown Twp.-2104 | 1 violations | Yes | 0 | A- | |
| 393 | Englewood | 1 violations | Yes | 10 | C | |
| 394 | 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 — 394 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)
→
PFAS in New Jersey
Ranked by compounds detected
→
Copper in New Jersey
Ranked by 90th percentile level (mg/L)
→
HAA5 in New Jersey
Ranked by average concentration (µg/L)
→
Chromium-6 in New Jersey
Ranked by max detected (µg/L)
→
Arsenic in New Jersey
Ranked by violation count
→
Strontium in New Jersey
Ranked by max detected (µg/L)
→
1,4-Dioxane in New Jersey
Ranked by max detected (µg/L)
→
Manganese in New Jersey
Ranked by max detected (µg/L)
→
Vanadium in New Jersey
Ranked by max detected (µg/L)
→
Chlorate in New Jersey
Ranked by max detected (µg/L)
→
Molybdenum in New Jersey
Ranked by max detected (µg/L)
→
Cobalt in New Jersey
Ranked by max detected (µg/L)
→
Lithium in New Jersey
Ranked by max detected (µg/L)
→
NDMA in New Jersey
Ranked by max detected (ng/L)
→
Perchlorate in New Jersey
Ranked by max detected (µg/L)
→
All states
Nitrate in drinking water by state
AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaQCRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming