Colorado Tap Water Quality
EPA water quality data for 150 community water systems serving 2,097,961+ people in Colorado. Click any system to see violations, lead testing results, and a safety grade.
Colorado draws drinking water from snowmelt-fed reservoirs, mountain streams, and the Denver Basin aquifer system. Uranium and radium occur naturally in some Front Range and Western Slope groundwater. Hard water is common across the state, with many areas exceeding 150 mg/L.
AURORA CITY OF
THORNTON CITY OF
WESTMINSTER CITY OF
BOULDER CITY OF
BROOMFIELD CITY AND COUNTY OF
LONGMONT CITY OF
SOUTH ADAMS COUNTY WSD
EAST CHERRY CREEK VALLEY WSD
ENGLEWOOD CITY OF
BRIGHTON CITY OF
SOUTHGATE WSD
NORTHGLENN CITY OF
SOUTHWEST METROPOLITAN WSD
LAFAYETTE CITY OF
CRESTVIEW WSD
LOUISVILLE CITY OF
LEFT HAND WD
PLATTE CANYON WSD
WILLOWS WD
SUPERIOR MD NO 1
NORTH WASHINGTON STREET WSD
KEN CARYL WSD
FEDERAL HEIGHTS CITY OF
ALAMOSA CITY OF
PAGOSA AREA WSD
IDAHO SPRINGS CITY OF
CHERRY CREEK VILLAGE WD
TODD CREEK VILLAGE MD
SALIDA CITY OF
GEORGETOWN TOWN OF
BENNETT TOWN OF
GLENDALE CITY OF
BUENA VISTA TOWN OF
LONGS PEAK WD
LYONS TOWN OF
WIKIUP MHP
RANGEVIEW MD
EASTERN ADAMS CO MD
NEDERLAND TOWN OF
LAS ANIMAS CITY OF
STRASBURG WSD
KIMBERLY HILLS MHP
PINE LAKES RANCH
FRIENDLY VILLAGE OF AURORA MHP
WOODLAND HILLS MHC
BUENA VISTA CORRECTIONAL FACILITY
BOULDER MEADOWS MHP
DEER TRAIL TOWN OF
HILLCREST VILLAGE MHP
EASTGATE VILLAGE MANUFACTURED HOMES
REDWOOD ESTATES
PONCHA SPRINGS TOWN OF
EAST ALAMOSA
FOXRIDGE FARMS MHP
SPRINGFIELD TOWN OF
LOOKOUT MOUNTAIN WD
THE GROVE AT ALTA RIDGE
GREATROCK NORTH WSD
DENVER CASCADE MHP
HOLIDAY HILLS VILLAGE
CASA ESTATES MHP
PINE BROOK HILLS WD
FRIENDLY VILLAGE OF THE ROCKIES
BYERS WSD
LONGVIEW MHP
MILE HI WATER INC HAULER
ANTONITO TOWN OF
MANASSA TOWN OF
ARBORDALE ACRES MHP
BOW MAR WSD
BOULDER RIDGE MHP
SAN JUAN RIVER VILLAGE MD
COUNTRYSIDE VILLAGE OF DENVER
PIEDRA PARK MD
SANFORD TOWN OF
SAN LAZARO MFCTD HOUSING COMMUNITY
COLUMBINE LAKES HOA
CHEYENNE WELLS TOWN OF
LA JARA TOWN OF
BASELINE WD
COUNTRYSIDE OF LONGMONT
THE MEADOWS
WOODSHIRE EAST MOBILE HOME PARK LTD
VISTA VILLAGE MHP
MILE HIGH WC
HOOVER HILLS WSD
LAMPLIGHTER MHP
WALSH TOWN OF
SAN LUIS WSD
COSTILLA COUNTY WS
ST VRAIN MHP LLC
CROWLEY COUNTY WA
FRANKLIN MOBILE HOME PARK
EMPIRE TOWN OF
GAME TRAIL ASSOCIATION INC
FT GARLAND WSD
BLANCA TOWN OF
BELLEVIEW CHRISTIAN COLLEGE
ST MARYS GLACIER WSD
SHANNON WSD
AVILLA EASTLAKE
OLNEY SPRINGS TOWN OF
MCCLAVE WA INC
ROMEO TOWN OF
HI LAND ACRES WSD
SKYLARK MOBILE HOME COMMUNITY
ALLENSPARK WSD
KIT CARSON TOWN OF
GREEN ACRES MHP
MOUNTAIN VIEW WUA
ELDORADO MUNICIPAL SYSTEM
CHAPARRAL VILLAGE MHP
THORNTON ESTATES
FORT LYON
EAST BOULDER COUNTY WD
ASPEN SPRINGS MD
CAVANAUGH HILLS WS
96 PIPELINE CO INC
JAMESTOWN TOWN OF
HAZELTINE HEIGHTS WATER
GRAND MEADOW OF LONGMONT MHP
GARDEN MEADOWS
LEFTHAND WSD LAKE PINES
OLDE STAGE WD
MESA ANTERO SUBD
CAPULIN WD
TRAIL WEST ASSOC
HASTY WC
EAST VALLEY MD
WARD TOWN OF
MOUNTAIN VIEW MHP
MILE HIGH MOBILE HOME PARK
RIVERDALE PEAKS II MD
LAFAYETTE GARDENS
HIGH PLAINS WUA
GLENVIEW OWNERS ASSOC
CROWLEY TOWN OF
SILVER PLUME TOWN OF
ADVANCE MHP
PRAIRIE VIEW POA
TRAVOIS HOA
SHADY LANE MHP
CREEKSIDE SOUTH ESTATES METRO DISTRICT
WAGON WHEEL MHP
ALPINE LAKES RANCH WC
ESTATES AT BROMLEY
STAGE RUN HOA
CAMPO TOWN OF
SANS SOUCI MHP
PRINCETON ESTATES SUBD