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Bridge Safety 624,000 bridge inspections Aviation Safety 30,000+ NTSB aviation events Dam Safety 92,600 dam safety records Water Safety 433,000+ public water systems Railroad Safety 438,000+ rail crossings Pipeline Safety 8,800+ pipeline incidents
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Browse Water Systems

4,979 public water systems in CO.

Public Water Systems Database

Browse 4,979 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.

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System Name PWSID State Type Population Served
LITTLE THOMPSON WD CO0135477 Colorado Community 25,654
FOUNTAIN CITY OF CO0121275 Colorado Community 25,130
JOHNSTOWN TOWN OF CO0162418 Colorado Community 24,725
CRESTVIEW WSD CO0101040 Colorado Community 23,756
WINDSOR TOWN OF CO0162843 Colorado Community 23,500
MERIDIAN MD CO0218015 Colorado Community 23,415
CHERRY CREEK VALLEY WSD CO0116175 Colorado Community 22,000
LOUISVILLE CITY OF CO0107487 Colorado Community 20,975
GREEN MTN PARK WTR & SAN DIST CO0054288 Colorado Community 20,600
TRI COUNTY WCD CO0143755 Colorado Community 20,490
LEFT HAND WD CO0107471 Colorado Community 20,280
SECURITY WATER DISTRICT CO0121775 Colorado Community 20,000
WHEAT RIDGE WATER DISTRICT CO0130842 Colorado Community 20,000
PLATTE CANYON WSD CO0103614 Colorado Community 19,485
EVANS CITY OF CO0162260 Colorado Community 19,369
MONTROSE CITY OF CO0143518 Colorado Community 19,305
WILLOWS WD CO0103100 Colorado Community 19,000
WOODMOOR WSD CO0121950 Colorado Community 18,031
SUPERIOR MD NO 1 CO0107725 Colorado Community 17,900
FREDERICK TOWN OF CO0162288 Colorado Community 17,173
MT WERNER WD CO0154524 Colorado Community 16,980
US AIR FORCE ACADEMY CO0121845 Colorado Community 16,876
ESTES PARK TOWN OF CO0135257 Colorado Community 16,722
NORTH WELD COUNTY WD CO0162553 Colorado Community 15,890
EVERGREEN MD CO0130030 Colorado Community 15,750
STONEGATE MD CO0118076 Colorado Community 15,295
GYPSUM TOWN OF CO0119329 Colorado Community 15,272
BANCROFT WTR & SAN DIST CO0054338 Colorado Community 15,200
BLACK HAWK CITY OF CO0124147 Colorado Community 15,167
STERLING CITY OF CO0138045 Colorado Community 15,100
NORTH WASHINGTON STREET WSD CO0101105 Colorado Community 14,500
WHEAT RIDGE WTR DIST CO0055764 Colorado Community 14,400
BERTHOUD TOWN OF CO0135138 Colorado Community 14,211
WOODMEN HILLS MD CO0121930 Colorado Community 13,888
MONTEZUMA WC CO0142900 Colorado Community 13,797
ROXBOROUGH WSD CO0118055 Colorado Community 13,765
PINERY WWD CO0118025 Colorado Community 12,901
CASTLE PINES NORTH MD CO0118006 Colorado Community 12,800
MERIDIAN SERVICE MD CO0121455 Colorado Community 12,760
FT LUPTON CITY OF CO0162291 Colorado Community 12,099
LAKEHURST WSD CO0130466 Colorado Community 12,000
KEN CARYL WSD CO0103075 Colorado Community 12,000
FT MORGAN CITY OF CO0144005 Colorado Community 12,000
SEVERANCE TOWN OF CO0162707 Colorado Community 11,733
FEDERAL HEIGHTS CITY OF CO0101055 Colorado Community 11,678
WELLINGTON TOWN OF CO0135838 Colorado Community 11,500
TRINIDAD CITY OF CO0136800 Colorado Community 11,400
STERLING RANCH CAB CO0118724 Colorado Community 11,357
ALAMOSA CITY OF CO0102100 Colorado Community 11,271
PAGOSA AREA WSD CO0104300 Colorado Community 11,069