| Public water system | Population served |
|---|---|
| SALT LAKE CITY WATER SYSTEM | 383,612 |
| GRANGER-HUNTER IMPROVEMENT DISTRICT | 121,083 |
| WEST JORDAN CITY WATER SYSTEM | 117,025 |
| PROVO CITY | 116,288 |
| ST GEORGE CITY WATER SYSTEM | 105,240 |
| SANDY CITY WATER SYSTEM | 99,750 |
| JORDAN VALLEY WCD | 99,335 |
| OREM CITY WATER SYSTEM | 98,129 |
| LEHI CITY | 93,446 |
| SOUTH JORDAN CITY | 89,704 |
| OGDEN CITY WATER SYSTEM | 87,267 |
| LAYTON CITY WATER SYSTEM | 82,000 |
| SARATOGA SPRINGS CITY | 68,000 |
| TAYLORSVILLE-BENNION ID | 67,098 |
| EAGLE MOUNTAIN CITY | 61,266 |
| HERRIMAN CITY MUNICIPAL WATER DEPARTMENT | 60,000 |
| UNIVERSITY OF UTAH | 57,080 |
| KEARNS IMPROVEMENT DISTRICT | 56,700 |
| LOGAN CITY WATER SYSTEM | 55,540 |
| SPANISH FORK CITY | 47,169 |
| WASHINGTON CITY | 45,865 |
| RIVERTON CITY WATER SYSTEM | 45,600 |
| PLEASANT GROVE CITY | 40,000 |
| CEDAR CITY WATERWORKS | 39,670 |
| AMERICAN FORK CITY | 39,045 |
| ROY CITY WATER SYSTEM | 38,800 |
| MURRAY CITY WATER SYSTEM | 38,723 |
| BOUNTIFUL CITY WATER SYSTEM | 37,500 |
| TOOELE CITY WATER SYSTEM | 37,100 |
| SYRACUSE CITY WATER SYSTEM | 35,561 |
| SPRINGVILLE CITY | 35,516 |
| CLEARFIELD CITY WATER SYSTEM | 33,540 |
| MIDVALE CITY WATER SYSTEM | 33,005 |
| KAYSVILLE CITY WATER SYSTEM | 32,976 |
| MAGNA WATER DISTRICT | 32,100 |
| BONA VISTA WATER DISTRICT | 29,000 |
| FARMINGTON CITY WATER SYSTEM | 27,860 |
| HILL AIR FORCE BASE | 25,625 |
| HURRICANE CITY | 25,555 |
| SOUTH SALT LAKE CITY WATER SYSTEM | 23,600 |
| DRAPER CITY WATER SYSTEM | 23,205 |
| CLINTON CITY WATER SYSTEM | 23,000 |
| HIGHLAND CITY | 22,000 |
| NORTH OGDEN CITY | 22,000 |
| VINEYARD CITY | 21,431 |
| HOOPER WATER IMPROVEMENT DISTRICT | 20,820 |
| BRIGHAM CITY WATER SYSTEM | 20,540 |
| BLUFFDALE WATER SYSTEM | 20,000 |
| HEBER CITY WATER SYSTEM | 19,000 |
| PAYSON CITY WATER SYSTEM | 19,000 |
| NORTH SALT LAKE CITY WATER SYSTEM | 18,655 |
| SANTAQUIN CITY | 17,532 |
| SOUTH OGDEN CITY WATER SYSTEM | 17,500 |
| CENTERVILLE CITY WATER SYSTEM | 17,155 |
| GRANTSVILLE CITY | 16,284 |
| WHITE CITY WID | 15,800 |
| MAPLETON CITY | 14,000 |
| ASHLEY VALLEY WATER AND SEWER ID | 13,835 |
| WOODS CROSS CITY WATER SYSTEM | 13,110 |
| TREMONTON CITY | 13,000 |
| LINDON CITY | 11,900 |
| HYRUM CITY | 10,891 |
| SOUTH DAVIS WATER DISTRICT | 10,565 |
| IVINS | 10,465 |
| SMITHFIELD CITY | 10,223 |
| ALPINE CITY | 10,200 |
| WEST POINT CITY WATER SYSTEM | 10,040 |
| CEDAR HILLS TOWN WATER SYSTEM | 10,015 |
| VERNAL CITY WATER SYSTEM | 10,000 |
| TAYLOR-WEST WEBER WID | 9,900 |
| STANSBURY PARK IMPROVEMENT DISTRICT | 9,839 |
| PROVIDENCE CITY WATER SYSTEM | 9,690 |
| SALEM CITY | 9,298 |
| WASHINGTON TERRACE CITY WATER SYSTEM | 9,260 |
| PLEASANT VIEW CULINARY WATER | 9,250 |
| NIBLEY CITY WATER | 9,200 |
| MOAB CITY | 9,000 |
| SANTA CLARA CITY | 9,000 |
| RIVERDALE CITY WATER SYSTEM | 8,945 |
| PARK CITY WATER SYSTEM | 8,875 |
| PRICE MUNICIPAL CORPORATION | 8,867 |
| NORTH LOGAN CITY | 8,500 |
| RICHFIELD CITY | 8,360 |
| MOUNTAIN REGIONAL WATER SSD | 8,245 |
| SOUTH WEBER WATER SYSTEM | 8,125 |
| ROOSEVELT CITY WATER SYSTEM | 8,000 |
| NEPHI CITY | 7,122 |
| MIDWAY CITY WATER SYSTEM | 7,055 |
| EPHRAIM CITY | 7,000 |
| PERRY CITY | 6,570 |
| ENOCH CITY WATER SYSTEM | 6,500 |
| HILDALE - COLORADO CITY | 6,100 |
| FRUIT HEIGHTS CITY WATER SYSTEM | 6,075 |
| PRICE RIVER WID | 5,790 |
| WEST BOUNTIFUL CITY WATER SYSTEM | 5,600 |
| ELK RIDGE TOWN | 5,510 |
| SUNSET CITY WATER SYSTEM | 5,300 |
| ALTA TOWN WATER SYSTEM | 5,228 |
| HYDE PARK CITY WATER SYSTEM | 5,200 |
| SL COUNTY SERVICE AREA NO 3 - SNOWBIRD | 5,110 |
| KANAB CITY | 4,985 |
| TWIN CREEKS SSD | 4,640 |
| MORGAN CITY WATER SYSTEM | 4,520 |
| LA VERKIN CITY WATER SYSTEM | 4,500 |
| WELLSVILLE CITY WATER SYSTEM | 4,190 |
| MAESER IMPROVEMENT DISTRICT | 4,152 |
| GRAND WATER AND SEWER AGENCY | 4,099 |
| MOUNT PLEASANT CITY | 4,040 |
| CEDAR VALLEY WATER CONSERVANCY | 3,995 |
| BLANDING CITY | 3,760 |
| GUNNISON CITY | 3,509 |
| BEAVER CITY WATER SYSTEM | 3,500 |
| DELTA CITY | 3,436 |
| MANTI CITY | 3,429 |
| ZION CANYON WATER SYSTEM | 3,380 |
| WEST HAVEN SSD | 3,360 |
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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