Water hardness in New Jersey
Typical New Jersey tap water
80mg/L
4.7gpg
Moderately hard
Population-weighted middle value across 267 New Jersey cities in the dataset
- People with hard or very hard water
- 12%
- Hardest
- Park Ridge 313
- Softest
- Hawthorne 5
We have hardness numbers for 227 New Jersey cities; 13 of them are county estimates rather than utility figures. Each city page adds the water system's EPA violation record and a softener size for a typical household.
Dot size follows population. Tap a dot for the city page.
40Soft
154Moderately hard
20Hard
13Very hard
Hardest water in New Jersey
- Park Ridge313
- Woodcliff Lake313
- White Meadow Lake269
- Waldwick256
- Franklin Park235
- East Franklin235
- Garfield212
- Lodi212
Softest water in New Jersey
All cities in New Jersey
| City | mg/L | gpg | Class | Data | EPA health violations |
|---|---|---|---|---|---|
| Newark | 37 | 2.2 | Soft | Utility report | 20 |
| Jersey City | 73 | 4.3 | Moderately hard | Utility report | 1 |
| Paterson | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Elizabeth | 54 | 3.2 | Soft | Utility report | 20 |
| Toms River | 13 | 0.8 | Soft | County estimate | – |
| Trenton | 80 | 4.7 | Moderately hard | Utility report | 20 |
| Clifton | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Bayonne | 39 | 2.3 | Soft | Utility report | 0 |
| East Orange | 171 | 10.0 | Hard | County estimate | 0 |
| Camden | 82 | 4.8 | Moderately hard | Utility report | 2 |
| Passaic | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Lakewood | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Union City | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Vineland | 26 | 1.5 | Soft | County estimate | – |
| Hoboken | 76 | 4.4 | Moderately hard | Utility report | 0 |
| Plainfield | 100 | 5.8 | Moderately hard | Utility report | 0 |
| New Brunswick | 66 | 3.9 | Moderately hard | County estimate | – |
| Perth Amboy | 84 | 4.9 | Moderately hard | Utility report | 7 |
| West New York | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Sayreville | 66 | 3.9 | Moderately hard | County estimate | – |
| Hackensack | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Linden | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Sicklerville | 43 | 2.5 | Soft | Utility report | 1 |
| Kearny | 106 | 6.2 | Moderately hard | Utility report | 1 |
| Fort Lee | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Atlantic City | 12 | 0.7 | Soft | County estimate | – |
| Fair Lawn | 137 | 8.0 | Hard | Utility report | 3 |
| Garfield | 212 | 12.4 | Very hard | County estimate | 1 |
| Long Branch | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Westfield | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Princeton | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Rahway | 196 | 11.5 | Very hard | County estimate | 0 |
| Englewood | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Bergenfield | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Bridgeton | 26 | 1.5 | Soft | County estimate | 3 |
| Millville | 26 | 1.5 | Soft | County estimate | 1 |
| Old Bridge | 69 | 4.0 | Moderately hard | Utility report | 0 |
| Paramus | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Cliffside Park | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Ridgewood | 105 | 6.1 | Moderately hard | Utility report | 1 |
| Lodi | 212 | 12.4 | Very hard | County estimate | – |
| Carteret | 108 | 6.3 | Moderately hard | Utility report | 1 |
| South Plainfield | 102 | 6.0 | Moderately hard | Utility report | 0 |
| Glassboro | 37 | 2.1 | Soft | County estimate | 1 |
| Somerset | 169 | 9.9 | Hard | Utility report | 2 |
| Summit | 133 | 7.8 | Hard | Utility report | 0 |
| Roselle | 100 | 5.8 | Moderately hard | Utility report | 0 |
| North Plainfield | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Secaucus | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Hillsborough | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Harrison | 37 | 2.2 | Soft | Utility report | 20 |
| Lindenwold | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Parsippany | 208 | 12.2 | Very hard | Utility report | 2 |
| Elmwood Park | 212 | 12.4 | Very hard | County estimate | 3 |
| Pleasantville | 21 | 1.2 | Soft | Utility report | 0 |
| Morristown | 148 | 8.7 | Hard | Utility report | 2 |
| Palisades Park | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Hawthorne | 5 | 0.3 | Soft | Utility report | 1 |
| Woodbridge | 108 | 6.3 | Moderately hard | Utility report | 1 |
| Point Pleasant | 65 | 3.8 | Moderately hard | Utility report | 0 |
| Tinton Falls | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Iselin | 108 | 6.3 | Moderately hard | Utility report | 1 |
| Rutherford | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Preakness | 44 | 2.5 | Soft | Utility report | 0 |
| Dumont | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Colonia | 108 | 6.3 | Moderately hard | Utility report | 1 |
| Avenel | 108 | 6.3 | Moderately hard | Utility report | 1 |
| New Milford | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Madison | 138 | 8.1 | Hard | Utility report | 0 |
| Springdale | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Asbury Park | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Roselle Park | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Fairview | 86 | 5.0 | Moderately hard | Utility report | 1 |
| Edgewater | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Princeton Meadows | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Metuchen | 108 | 6.3 | Moderately hard | Utility report | 1 |
| Highland Park | 63 | 3.7 | Moderately hard | Utility report | 1 |
| Tenafly | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Ramsey | 131 | 7.7 | Hard | Utility report | 0 |
| Williamstown | 22 | 1.3 | Soft | Utility report | 0 |
| Cherry Hill Mall | 78 | 4.6 | Moderately hard | Utility report | 0 |
| Middlesex | 100 | 5.8 | Moderately hard | Utility report | 1 |
| Somerville | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Moorestown-Lenola | 49 | 2.9 | Soft | Utility report | 1 |
| Florham Park | 137 | 8.0 | Hard | Utility report | 0 |
| Short Hills | 133 | 7.8 | Hard | Utility report | 0 |
| Collingswood | 97 | 5.7 | Moderately hard | Utility report | 0 |
| Bradley Gardens | 100 | 5.8 | Moderately hard | Utility report | 0 |
| West Freehold | 64 | 3.7 | Moderately hard | Utility report | 0 |
| New Providence | 133 | 7.8 | Hard | Utility report | 0 |
| Westmont | 101 | 5.9 | Moderately hard | Utility report | 0 |
| Mercerville | 75 | 4.4 | Moderately hard | Utility report | 20 |
| Eatontown | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Echelon | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Ridgefield Park | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Franklin Park | 235 | 13.7 | Very hard | Utility report | 2 |
| Fords | 108 | 6.3 | Moderately hard | Utility report | 1 |
| Bound Brook | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Haddonfield | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Freehold | 64 | 3.7 | Moderately hard | Utility report | 0 |
| Glen Rock | 105 | 6.1 | Moderately hard | Utility report | 1 |
| Upper Montclair | 46 | 2.7 | Soft | Utility report | 1 |
| Hasbrouck Heights | 96 | 5.6 | Moderately hard | Utility report | 1 |
| River Edge | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Martinsville | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Guttenberg | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Bellmawr | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Robertsville | 29 | 1.7 | Soft | Utility report | 2 |
| Ringwood | 42 | 2.5 | Soft | Utility report | 4 |
| Hamilton Square | 50 | 2.9 | Soft | Utility report | 0 |
| Ridgefield | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Westwood | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Pompton Lakes | 44 | 2.5 | Soft | Utility report | 0 |
| Franklin Lakes | 98 | 5.7 | Moderately hard | Utility report | 0 |
| Little Ferry | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Greentree | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Manville | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Kendall Park | 82 | 4.8 | Moderately hard | Utility report | 1 |
| The Hills | 133 | 7.8 | Hard | Utility report | 0 |
| Somers Point | 21 | 1.2 | Soft | Utility report | 0 |
| East Rutherford | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Marlton | 42 | 2.4 | Soft | Utility report | 0 |
| Lake Hiawatha | 208 | 12.2 | Very hard | Utility report | 2 |
| South Amboy | 104 | 6.1 | Moderately hard | Utility report | 1 |
| Wood-Ridge | 96 | 5.6 | Moderately hard | Utility report | 1 |
| East Franklin | 235 | 13.7 | Very hard | Utility report | 2 |
| Waldwick | 256 | 15.0 | Very hard | Utility report | 0 |
| Blackwells Mills | 111 | 6.5 | Moderately hard | Utility report | 0 |
| Hillsdale | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Maywood | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Kinnelon | 37 | 2.1 | Soft | Utility report | 3 |
| Brookdale | 43 | 2.5 | Soft | Utility report | 21 |
| White Horse | 80 | 4.7 | Moderately hard | Utility report | 20 |
| Chatham | 105 | 6.1 | Moderately hard | Utility report | 0 |
| Villas | 64 | 3.8 | Moderately hard | Utility report | 0 |
| Bogota | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Matawan | 59 | 3.5 | Soft | Utility report | 1 |
| Park Ridge | 313 | 18.3 | Very hard | Utility report | 0 |
| Monmouth Junction | 99 | 5.8 | Moderately hard | Utility report | 0 |
| Leonia | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Ashland | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Smithville | 21 | 1.2 | Soft | Utility report | 0 |
| Cresskill | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Absecon | 21 | 1.2 | Soft | Utility report | 0 |
| Lake Mohawk | 158 | 9.2 | Hard | Utility report | 4 |
| Boonton | 92 | 5.4 | Moderately hard | Utility report | 1 |
| Whippany | 148 | 8.7 | Hard | Utility report | 2 |
| Audubon | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Madison Park | 69 | 4.0 | Moderately hard | Utility report | 0 |
| White Meadow Lake | 269 | 15.7 | Very hard | Utility report | 0 |
| Closter | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Upper Saddle River | 96 | 5.6 | Moderately hard | Utility report | 1 |
| West Long Branch | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Kenilworth | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Raritan | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Northfield | 21 | 1.2 | Soft | Utility report | 0 |
| Runnemede | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Dunellen | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Oradell | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Glen Ridge | 90 | 5.2 | Moderately hard | Utility report | 0 |
| Dayton | 82 | 4.8 | Moderately hard | Utility report | 1 |
| Butler | 37 | 2.1 | Soft | Utility report | 3 |
| Pomona | 21 | 1.2 | Soft | Utility report | 0 |
| Fanwood | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Bernardsville | 133 | 7.8 | Hard | Utility report | 0 |
| Watsessing | 43 | 2.5 | Soft | Utility report | 21 |
| Basking Ridge | 133 | 7.8 | Hard | Utility report | 0 |
| Palmyra | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Brigantine | 20 | 1.2 | Soft | Utility report | 1 |
| Berlin | 58 | 3.4 | Soft | Utility report | 1 |
| Wharton | 43 | 2.5 | Soft | Utility report | 0 |
| Haddon Heights | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Emerson | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Mountainside | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Yorketown | 91 | 5.3 | Moderately hard | Utility report | 0 |
| Stratford | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Rumson | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Barrington | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Milltown | 66 | 3.9 | Moderately hard | Utility report | 14 |
| Linwood | 21 | 1.2 | Soft | Utility report | 0 |
| Midland Park | 105 | 6.1 | Moderately hard | Utility report | 1 |
| Lincroft | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Belle Mead | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Heathcote | 82 | 4.8 | Moderately hard | Utility report | 1 |
| Old Tappan | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Green Knoll | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Rockaway | 123 | 7.2 | Hard | Utility report | 0 |
| Strathmore | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Morris Plains | 148 | 8.7 | Hard | Utility report | 2 |
| Watchung | 109 | 6.3 | Moderately hard | Utility report | 0 |
| Ramblewood | 78 | 4.5 | Moderately hard | Utility report | 0 |
| Oceanport | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Prospect Park | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Carlstadt | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Ramtown | 84 | 4.9 | Moderately hard | Utility report | 0 |
| Yardville | 75 | 4.4 | Moderately hard | Utility report | 20 |
| Kingston Estates | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Bridgewater Center | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Woodcliff Lake | 313 | 18.3 | Very hard | Utility report | 0 |
| Laurence Harbor | 69 | 4.0 | Moderately hard | Utility report | 0 |
| Packanack Lake | 44 | 2.5 | Soft | Utility report | 0 |
| Little Silver | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Fair Haven | 64 | 3.7 | Moderately hard | Utility report | 1 |
| Pine Brook | 180 | 10.5 | Hard | Utility report | 3 |
| Finderne | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Manasquan | 77 | 4.5 | Moderately hard | Utility report | 1 |
| Vauxhall | 109 | 6.3 | Moderately hard | Utility report | 0 |
| Belmar | 61 | 3.6 | Moderately hard | Utility report | 1 |
| Somerdale | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Jamesburg | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Norwood | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Franklin Center | 111 | 6.5 | Moderately hard | Utility report | 0 |
| Rutgers University-Busch Campus | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Clementon | 66 | 3.9 | Moderately hard | Utility report | 0 |
| Towaco | 180 | 10.5 | Hard | Utility report | 3 |
| Morganville | 29 | 1.7 | Soft | Utility report | 2 |
| Lyons | 133 | 7.8 | Hard | Utility report | 0 |
| Neshanic Station | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Garwood | 100 | 5.8 | Moderately hard | Utility report | 0 |
| Englewood Cliffs | 96 | 5.6 | Moderately hard | Utility report | 1 |
| East Freehold | 64 | 3.7 | Moderately hard | Utility report | 0 |
| Glendora | 82 | 4.8 | Moderately hard | Utility report | 0 |
| Bargaintown | 21 | 1.2 | Soft | Utility report | 0 |
| Margate City | 33 | 1.9 | Soft | Utility report | 0 |
| Troy Hills | 208 | 12.2 | Very hard | Utility report | 2 |
| Harrington Park | 96 | 5.6 | Moderately hard | Utility report | 1 |
| Ellisburg | 82 | 4.8 | Moderately hard | Utility report | 0 |
Questions
Is New Jersey water hard?
The typical New Jersey resident gets about 80 mg/L (4.7 gpg), which is moderately hard. About 12% of people in the cities we track have hard or very hard water.
Which city in New Jersey has the hardest water?
Among 227 cities with pages here, Park Ridge is highest at 313 mg/L.
Which city in New Jersey has the softest water?
Hawthorne, at 5 mg/L.
Other states
- Alabama73
- Alaska110
- Arizona180
- Arkansas39
- California121
- Colorado97
- Connecticut53
- Delaware87
- District of Columbia117
- Florida120
- Georgia28
- Hawaii55
- Idaho118
- Illinois139
- Indiana178
- Iowa183
- Kansas138
- Kentucky134
- Louisiana102
- Maine16
- Maryland105
- Massachusetts38
- Michigan112
- Minnesota160
- Mississippi38
- Missouri121
- Montana116
- Nebraska149
- Nevada232
- New Hampshire20
- New Mexico137
- New York31
- North Carolina31
- North Dakota133
- Ohio113
- Oklahoma152
- Oregon24
- Pennsylvania127
- Rhode Island42
- South Carolina32
- South Dakota124
- Tennessee89
- Texas112
- Utah231
- Vermont62
- Virginia65
- Washington36
- West Virginia106
- Wisconsin170
- Wyoming191
Hardness data: TapWaterData US Water Hardness, CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.