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Employer directory · Colorado

Public water systems in Colorado

167 public water systems in Colorado, 22nd among the states. Community drinking-water systems owned by a local, state or federal government and serving 3,301 people or more, from EPA's Safe Drinking Water Information System. Private and tribal systems are not included.

Public water systemPopulation served
DENVER WATER BOARD1,287,000
AURORA CITY OF533,407
COLORADO SPRINGS UTILITIES464,111
THORNTON CITY OF226,465
WESTMINSTER CITY OF202,078
FT COLLINS CITY OF179,901
ARVADA CITY OF171,610
BOULDER CITY OF166,080
GREELEY CITY OF132,310
PUEBLO BOARD OF WW114,070
CASTLE ROCK TOWN OF110,298
BROOMFIELD CITY AND COUNTY OF106,153
LONGMONT CITY OF104,178
HIGHLANDS RANCH WSD103,444
UTE WCD92,580
LOVELAND CITY OF91,077
CONSOLIDATED MUTUAL MAPLE GROVE81,400
PARKER WSD75,949
SOUTH ADAMS COUNTY WSD75,559
EAST CHERRY CREEK VALLEY WSD66,130
FT COLLINS LOVELAND WD63,532
ENGLEWOOD CITY OF57,332
BRIGHTON CITY OF56,304
SOUTHGATE WSD55,000
EAGLE RIVER WSD51,515
GREEN MOUNTAIN WSD49,400
NORTHGLENN CITY OF48,927
SOUTHWEST METROPOLITAN WSD48,648
US DEPARTMENT OF THE ARMY FORT CARSON48,000
ERIE TOWN OF47,444
BANCROFT CLOVER WSD44,000
GOLDEN CITY OF38,288
CANON CITY CITY OF34,800
CLIFTON WD34,500
DURANGO CITY OF33,787
ASPEN CITY OF31,100
BEAR CREEK WSD30,000
PUEBLO WEST MD30,000
CHEROKEE MD29,610
LAFAYETTE CITY OF28,700
BRECKENRIDGE TOWN OF28,315
EAST LARIMER COUNTY WD27,944
FIRESTONE TOWN OF27,798
WIDEFIELD WSD27,640
CSU MAIN AND WEST HOUSING CAMPUS27,375
JOHNSTOWN TOWN OF27,295
GRAND JUNCTION CITY OF26,000
LITTLE THOMPSON WD25,654
FOUNTAIN CITY OF25,130
CRESTVIEW WSD23,756
WINDSOR TOWN OF23,500
CHERRY CREEK VALLEY WSD22,000
LOUISVILLE CITY OF20,975
TRI COUNTY WCD20,490
LEFT HAND WD20,280
SECURITY WATER DISTRICT20,000
WHEAT RIDGE WATER DISTRICT20,000
PLATTE CANYON WSD19,485
EVANS CITY OF19,369
MONTROSE CITY OF19,305
MT WERNER WD19,000
WILLOWS WD19,000
WOODMOOR WSD18,031
SUPERIOR MD NO 117,900
FREDERICK TOWN OF17,173
US AIR FORCE ACADEMY16,876
ESTES PARK TOWN OF16,722
NORTH WELD COUNTY WD15,890
EVERGREEN MD15,750
STONEGATE MD15,295
GYPSUM TOWN OF15,272
BLACK HAWK CITY OF15,167
STERLING CITY OF15,100
NORTH WASHINGTON STREET WSD14,500
BERTHOUD TOWN OF14,211
WOODMEN HILLS MD13,888
MONTEZUMA WC13,797
ROXBOROUGH WSD13,765
PINERY WWD12,901
CASTLE PINES NORTH MD12,800
MERIDIAN SERVICE MD12,760
FT LUPTON CITY OF12,099
FT MORGAN CITY OF12,000
LAKEHURST WSD12,000
SEVERANCE TOWN OF11,733
WELLINGTON TOWN OF11,720
FEDERAL HEIGHTS CITY OF11,678
TRINIDAD CITY OF11,400
ALAMOSA CITY OF11,271
PAGOSA AREA WSD11,069
COTTONWOOD WSD10,867
IDAHO SPRINGS CITY OF10,432
NORTH TABLE MOUNTAIN WSD10,000
VALLEY WD10,000
STEAMBOAT SPRINGS CITY OF9,950
SNAKE RIVER WD9,900
MORRISON TOWN OF9,887
MOUNTAIN VILLAGE TOWN OF9,700
ST CHARLES MESA WD9,690
GUNNISON CITY OF9,610
RIFLE CITY OF9,489
GLENWOOD SPRINGS CITY OF9,428
WILLOWBROOK WSD9,348
CHERRY CREEK VILLAGE WD9,215
MILLIKEN TOWN OF9,200
CRAIG CITY OF8,930
CORTEZ CITY OF8,770
DELTA CITY OF8,700
WOODLAND PARK CITY OF8,500
SILVERTHORNE TOWN OF8,400
LA JUNTA CITY OF8,320
INVERNESS WSD8,140
MORGAN COUNTY QUALITY WD8,116
TELLURIDE TOWN OF7,900
CENTRAL WELD CNTY WD7,662
EAGLE TOWN OF7,511
FLORENCE CITY OF7,500
LAMAR CITY OF7,500
PARKVILLE WD7,500
EATON TOWN OF7,328
MANITOU SPRINGS CITY OF6,938
DACONO CITY OF6,900
CARBONDALE TOWN OF6,700
WINTER PARK WSD6,635
LOCHBUIE TOWN OF6,518
STRATMOOR HILLS WSD6,500
DONALA WSD6,421
SNOWMASS VILLAGE WSD6,353
NORTHERN DOUGLAS COUNTY WSD6,160
LAKEWOOD CITY OF6,000
COPPER MOUNTAIN CONSOLIDATED MD5,785
MONUMENT TOWN OF5,740
TRIVIEW MD5,737
SALIDA CITY OF5,666
CASTLE PINES VILLAGE MD5,656
GRAND COUNTY WATER NO 15,400
GEORGETOWN TOWN OF5,315
EDGEWATER CITY OF5,300
BRUSH CITY OF5,122
LIMON TOWN OF5,080
NEW CASTLE TOWN OF5,024
PAINT BRUSH HILLS4,994
KEENESBURG TOWN OF4,650
MONTE VISTA CITY OF4,600
MID VALLEY MD4,588
ELIZABETH TOWN OF4,523
MENOKEN WD4,500
FRISCO TOWN OF4,495
ROCKY FORD CITY OF4,443
BENNETT TOWN OF4,400
GLENDALE CITY OF4,400
AULT TOWN OF4,220
BATTLEMENT MESA MD4,100
YUMA CITY OF4,049
HIGH VIEW WD4,000
PARK CENTER WD4,000
WEST FORT COLLINS WD4,000
HAYDEN TOWN OF3,982
GENESEE WSD3,920
PERRY PARK WSD3,890
CHIPETA WD3,802
BUENA VISTA TOWN OF3,776
CENTRAL CITY CITY OF3,750
BURLINGTON CITY OF3,720
COLORADO CENTRE MD3,675
SILT TOWN OF3,536
HUDSON TOWN OF3,350

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.

Jobs at public water systems

Water / Wastewater Treatment Operator

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Public water systems in other states

Texas · 1,133California · 523Illinois · 408Alabama · 294Florida · 286Michigan · 284Tennessee · 276New York · 266Pennsylvania · 259Massachusetts · 254Ohio · 243Georgia · 242North Carolina · 237Washington · 211New Jersey · 205Missouri · 200Kentucky · 190Louisiana · 190Minnesota · 185Wisconsin · 185Indiana · 176Arkansas · 157South Carolina · 143Oklahoma · 142Virginia · 142Utah · 116Iowa · 112Oregon · 111Mississippi · 107Kansas · 88West Virginia · 82Maryland · 69Arizona · 63New Mexico · 53Idaho · 43Nebraska · 43New Hampshire · 38Hawaii · 34Montana · 32Vermont · 32Maine · 31South Dakota · 31Connecticut · 30Nevada · 28Wyoming · 28Rhode Island · 26Delaware · 20North Dakota · 18Alaska · 16District of Columbia · 3

All public water systems in the U.S. · Colorado government jobs