| Public water system | Population served |
|---|---|
| PASSAIC VALLEY WATER COMMISSION | 310,483 |
| NEWARK WATER DEPARTMENT | 294,274 |
| JERSEY CITY MUA | 262,000 |
| WILDWOOD CITY WATER DEPARTMENT | 218,472 |
| TRENTON WATER WORKS | 217,000 |
| ATLANTIC CITY MUA | 152,415 |
| BRICK TOWNSHIP MUA | 81,829 |
| EAST ORANGE WATER COMMISSION | 75,000 |
| OLD BRIDGE MUA | 68,000 |
| CITY OF BAYONNE | 63,000 |
| SOUTHEAST MORRIS COUNTY MUA | 62,349 |
| RIDGEWOOD WATER | 61,700 |
| FRANKLIN TOWNSHIP DEPT OF PUBLIC WORKS | 57,150 |
| NEW BRUNSWICK W DEPT | 55,000 |
| TOWNSHIP OF WAYNE | 55,000 |
| BLOOMFIELD WATER DEPARTMENT | 53,315 |
| PERTH AMBOY WATER DEPARTMENT | 52,328 |
| HOBOKEN WATER UTILITY | 52,000 |
| PARSIPPANY-TROY HILLS WATER DEPARTMENT | 50,400 |
| EAST BRUNSWICK WATER UTILITY | 49,715 |
| WASHINGTON TOWNSHIP MUA | 48,000 |
| MERCHANTVILLE PENNSAUKEN | 47,144 |
| CITY OF CAMDEN | 46,585 |
| EVESHAM MUA | 45,538 |
| SOUTH BRUNSWICK TWP W DI | 45,450 |
| SAYREVILLE W DEPT | 45,345 |
| NORTH BRUNSWICK W DEPT | 43,905 |
| MT LAUREL TWP MUA | 41,743 |
| KEARNY WATER DEPARTMENT | 41,664 |
| MONTCLAIR WATER BUREAU | 40,150 |
| AVALON WATER AND SEWERAGE UTILITIES | 39,839 |
| WINSLOW TWP DMU | 39,174 |
| JACKSON TWP MUA | 37,224 |
| VINELAND WATER & SEWER UTILITY | 36,250 |
| MONROE TWP UTILITY DEPARTMENT | 36,000 |
| FAIR LAWN WATER DEPT | 35,564 |
| BELLEVILLE WATER DEPT | 35,129 |
| CAPE MAY WATER & SEWER U | 35,000 |
| EDISON WATER CO | 35,000 |
| WILLINGBORO MUA | 35,000 |
| STONE HARBOR WATER DEPT | 30,850 |
| STAFFORD TWP WATER - BEACH HAVEN WEST | 30,603 |
| DEPTFORD TWP MUA | 30,561 |
| GARFIELD WATER DEPARTMENT | 30,487 |
| ORANGE WATER DEPT | 30,134 |
| FREEHOLD TWP WATER DEPT | 29,831 |
| NUTLEY WATER DEPT | 29,500 |
| MARLBORO TOWNSHIP WATER UTILITY DIVISION | 29,480 |
| LACEY TWP MUA | 29,000 |
| DOVER WATER COMMISSION | 27,806 |
| LAKEWOOD TWP MUA | 27,614 |
| MILLVILLE WATER DEPARTMENT | 27,500 |
| LIVINGSTON TWP DIV OF WATER | 27,391 |
| RAHWAY WATER DEPARTMENT | 27,300 |
| BURLINGTON TWP W DEPT | 27,000 |
| MAHWAH WATER DEPARTMENT | 26,777 |
| MONROE MUNICIPAL UTILITIES AUTHORITY | 26,179 |
| WALL TWP WATER DEPT | 26,000 |
| LONG BEACH TWP BRANT BEA | 25,295 |
| EAST WINDSOR MUA | 25,000 |
| LAVALLETTE WATER DEPT | 25,000 |
| COLLINGSWOOD WATER DEPAR | 24,500 |
| GLASSBORO WATER DEPARTMENT | 24,244 |
| LITTLE EGG HARBOR TWP MU | 24,215 |
| PASSAIC VALLEY WC LODI WD | 24,136 |
| MANCHESTER TWP WATER UTILITY - EASTERN | 23,980 |
| MARGATE CITY WATER DEPARTMENT | 23,500 |
| BRIDGETON CITY WATER DEPT | 22,770 |
| VENTNOR CITY WATER & SEWER UTILITY | 22,150 |
| HACKETTSTOWN MUA | 22,000 |
| MONTVILLE TWP MUA | 22,000 |
| WEST DEPTFORD TWP WATER DEPT | 22,000 |
| HAMILTON TOWNSHIP MUA | 21,720 |
| MOORESTOWN WATER DEPT | 20,700 |
| LYNDHURST WATER DEPARTMENT | 20,500 |
| ELMWOOD PARK WATER DEPT | 20,374 |
| BARNEGAT TWP WATER SEWER | 20,000 |
| BEACH HAVEN WATER DEPT | 20,000 |
| BELMAR WATER DEPT | 20,000 |
| SEASIDE HEIGHTS WATER DE | 20,000 |
| POINT PLEASANT WATER DEPARTMENT | 19,600 |
| HAWTHORNE WATER DEPARTMENT | 19,458 |
| MAPLE SHADE WATER DEPARTMENT | 19,400 |
| SPARTA TWP WATER UTILITY - LAKE MOHAWK | 17,625 |
| MEDFORD TWP DEPT OF MUNI | 17,272 |
| SOUTH ORANGE WATER DEPARTMENT | 16,964 |
| PARK RIDGE WATER DEPT | 16,466 |
| SOUTH RIVER W DEPT | 16,000 |
| DENVILLE TWP WATER DEPT | 15,881 |
| BORDENTOWN WATER DEPARTM | 15,821 |
| MADISON WATER DEPT | 15,820 |
| SEA ISLE CITY WATER DEPARTMENT | 15,800 |
| MANCHESTER TWP WATER UTILITY - WESTERN | 15,613 |
| OCEAN TWP DEPT OF UTILITIES | 15,419 |
| PVWC-NORTH ARLINGTON | 15,392 |
| RAMSEY WATER DEPT | 15,207 |
| SEASIDE PARK WATER DEPT | 15,000 |
| SHIP BOTTOM WATER DEPART | 15,000 |
| RANDOLPH TWP PUBLIC WORKS DEPT | 14,820 |
| BRIGANTINE WATER DEPARTMENT | 14,450 |
| HARRISON W DEPT | 14,425 |
| PEQUANNOCK TWP WATER DEPARTMENT | 14,010 |
| HIGHLAND PARK W DEPT | 14,000 |
| MANASQUAN WATER DEPARTME | 14,000 |
| ROCKAWAY TWP WATER DEPT | 14,000 |
| VERONA WATER DEPARTMENT | 13,641 |
| PENNSVILLE TWSP. WATER DEPART. | 13,500 |
| SADDLE BROOK WATER DEPT | 13,155 |
| BERLIN WATER DEPARTMENT | 12,991 |
| CEDAR GROVE WATER DEPT | 12,900 |
| JBMDL-DIX MAIN SYSTEM | 12,765 |
| OAKLAND WATER DEPT | 12,754 |
| MANTUA TOWNSHIP MUA | 12,600 |
| RED BANK WATER DEPT | 12,520 |
| CLINTON WATER DEPT | 12,500 |
| GLOUCESTER CITY W DEPT | 12,460 |
| LOWER TWP MUA | 12,416 |
| PEMBERTON TWP DEPT MAIN | 12,378 |
| JBMDL - MCGUIRE AFB | 12,227 |
| HAMMONTON WATER DEPT | 12,153 |
| MANCHESTER UTILITIES AUTHORITY | 12,000 |
| POINT PLEASANT BEACH WATER DEPARTMENT | 12,000 |
| HADDON TWP WATER DEPARTM | 11,938 |
| BERKELEY TWP MUA | 11,792 |
| WALLINGTON WATER DEPT | 11,583 |
| POMPTON LAKES MUA | 11,435 |
| EAST HANOVER TWP WATER DEPT | 11,393 |
| SPRING LAKE WATER DEPARTMENT | 11,270 |
| FLORENCE TWP W DEPT | 11,214 |
| FREEHOLD BOROUGH WATER D | 11,029 |
| LINCOLN PARK WATER DEPT | 11,000 |
| TOTOWA W DEPT | 10,804 |
| BEACHWOOD WATER DEPT | 10,802 |
| LONGPORT WATER DEPARTMENT | 10,777 |
| WEST CALDWELL WATER DEPARTMENT | 10,759 |
| WANAQUE W DEPT. | 10,266 |
| WOODBURY CITY W DEPT | 10,263 |
| PINE HILL BOROUGH MUA | 10,233 |
| WALDWICK WATER DEPT | 10,208 |
| KEANSBURG WATER & SEWER DEPT. | 10,105 |
| SURF CITY WATER DEPT | 10,000 |
| EAST GREENWICH TWP WATER DEPT | 9,900 |
| BURLINGTON CITY WATER DE | 9,835 |
| BOONTON WATER DEPT | 9,532 |
| BELLMAWR WATER DEPT | 9,522 |
| RINGWOOD WATER DEPARTMENT | 9,327 |
| MATAWAN BOROUGH WATER DE | 9,084 |
| CALDWELL WATER DEPT | 9,027 |
| CHATHAM WATER DEPT | 8,962 |
| FLORHAM PARK WATER DEPT | 8,846 |
| MANALAPAN TWP - KNOB HILL | 8,700 |
| JEFFERSON TWP W U LK HOP | 8,500 |
| NEWTON WATER & SEWER UTILITY | 8,300 |
| SPOTSWOOD W DEPT | 8,300 |
| BOROUGH OF CLAYTON | 8,179 |
| PITMAN WATER DEPARTMENT | 7,896 |
| MOUNT OLIVE TWP W D MAIN | 7,887 |
| BLOOMINGDALE WATER DEPT | 7,742 |
| GLEN RIDGE WATER DEPT | 7,681 |
| BUTLER WATER DEPT | 7,630 |
| KEYPORT WATER DEPT | 7,500 |
| FAIRFIELD WATER DEPT | 7,400 |
| HOPATCONG WATER DEPT | 7,224 |
| ROCKAWAY BORO WATER DEPT | 7,066 |
| MILLTOWN W DEPT | 7,000 |
| ABERDEEN - CLIFFWOOD/CLIFFWOOD BEACH | 6,775 |
| VEOLIA WATER NJ ALLENDALE WATER SYSTEM | 6,702 |
| HARVEY CEDARS WATER DEPT | 6,600 |
| WHARTON WATER DEPT | 6,342 |
| TUCKERTON WATER & SEWER DEPT | 6,285 |
| PAULSBORO WATER DEPARTMENT | 6,097 |
| AWO&M - PICATINNY ARSENAL | 6,011 |
| NORTH CALDWELL WATER DEP | 6,000 |
| WESTVILLE WATER DEPARTMENT | 6,000 |
| WOODLAND PARK WATER DEPARTMENT | 6,000 |
| FRANKLIN BD OF PUBLIC WORKS | 5,500 |
| ALLAMUCHY TWP WATER & SEWER | 5,423 |
| HIGHTSTOWN WATER DEPARTMENT | 5,400 |
| ROSELAND WATER DEPT | 5,300 |
| ROXBURY TWP W DEPT-SHORE | 5,153 |
| AVON BY THE SEA WATER DE | 5,000 |
| BOROUGH OF SPRINGLAKE HEIGHTS | 5,000 |
| CLEMENTON WATER DEPARTMENT | 5,000 |
| MT OLIVE VILLAGES WATER | 5,000 |
| WASHINGTON TWP MUA-SCHOO | 4,986 |
| GREENWICH TWP W DEPT | 4,921 |
| BUENA BOROUGH MUA | 4,880 |
| BRIELLE WATER DEPT | 4,800 |
| FLEMINGTON WATER DEPARTMENT | 4,581 |
| JEFFERSON TWP W U MILTON SYS | 4,500 |
| ROXBURY TWP W DEPT-SKY V | 4,478 |
| WOODSTOWN WATER DEPARTMENT | 4,455 |
| WEST CAPE MAY WATER DEPT | 4,427 |
| ATLANTIC HIGHLANDS WATER | 4,385 |
| MINE HILL TWP WATER DEPT | 4,300 |
| BARNEGAT LIGHT WATER DEP | 4,148 |
| HO HO KUS WATER DEPT | 4,060 |
| MOUNTAIN LAKES WATER DEP | 4,012 |
| CAPE MAY POINT BORO WATE | 4,000 |
| STANHOPE W DEPT | 3,730 |
| MT OLIVE VILLAGE GREEN WATER SYSTEM | 3,600 |
| PEMBERTON TOWNSHIP WATER - LAKE VALLEY | 3,500 |
| WASHINGTON TWP MUA-HAGER | 3,458 |
| HAMBURG BOARD OF PUBLIC | 3,382 |
| NETCONG WATER DEPT | 3,342 |
Largest first by population served, as each employer reports it to its federal registry.
Source: U.S. Environmental Protection Agency, Safe Drinking Water Information System (SDWIS/Fed), community water systems. Data captured October 2, 2026.
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