Boulder County, Colorado Water Systems

Boulder County, Colorado

73 community water systems on record — 41 active, 32 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Colorado’s official records. Always confirm current status with Colorado before making decisions based on this information.

Community water systems in Boulder County, Colorado

System name	City	Population served	Status
A 1 DISCOUNT WC	BOULDER	20	Inactive
ALEX DAWSON SCHOOL	LAFAYETTE	75	Inactive
ALEXANDER DAWSON SCHOOL	LAFAYETTE	134	Inactive
ALLANSPARK CRYSTAL SPRING WC	ALLENSPARK	0	Inactive
ALLENSPARK WSD	ALLENSPARK	340	Active
APOLLO ESTATES WUA	DENVER	0	Inactive
AQUARIAN WATER THE	BOULDER	0	Inactive
ARAPAHOE TRLR CT	BOULDER	45	Inactive
ARBORDALE ACRES MHP	LAFAYETTE	901	Active
BARI-DON KNOLL	BOULDER	101	Inactive
BASELINE WD	BOULDER	820	Active
BENCHMARK WSD	DENVER	0	Inactive
BIG SPRINGS WTR DIST	NEDERLAND	250	Inactive
BOULDER 2-BIG THOMPSON	BOULDER	1	Inactive
BOULDER CITY OF	BOULDER	166,080	Active
BOULDER MEADOWS MHP	WINDSOR	1,657	Active
BOULDER RIDGE MHP	LAFAYETTE	897	Active
BOULDER VALLEY WTR & SAN DIST	BOULDER	6,500	Inactive
BROWNSVILLE WATER & SAN. DIST.	LAFAYETTE	500	Inactive
COLUMBINE MOBILE HOME PARK	WHITE PLAINS	100	Inactive
COUNTRYSIDE OF LONGMONT	LAKEWOOD	775	Active
EAST BOULDER COUNTY WD	BOULDER	300	Active
ELDORADO MUNICIPAL SYSTEM	WHEAT RIDGE	308	Active
ERIE TOWN OF	ERIE	40,061	Active
FOUNTAIN TREE WATER ASSN	BOULDER	50	Inactive
GRACE MAR WUA	WHEAT RIDGE	50	Active
GRAND MEADOW OF LONGMONT MHP	LAKEWOOD	255	Active
HOOVER HILLS WSD	GOLDEN	662	Active
INDIAN PEAKS SPRINGWATER	BOULDER	0	Inactive
JAMESTOWN TOWN OF	JAMESTOWN	280	Active
KNOLLWOOD MD	WHEAT RIDGE	100	Inactive
KUPFNER TRLR CT	SUPERIOR II	17	Inactive
LAFAYETTE CITY OF	LAFAYETTE	28,700	Active
LAFAYETTE GARDENS	LAKEWOOD	207	Active
LARK MEADOWS WA	LAFAYETTE	75	Active
LEFT HAND WD	NIWOT	20,280	Active
LEFTHAND WSD LAKE PINES	BOULDER	250	Active
LMP COOP MHP	GREELEY	75	Active
LONGMONT 2-SOUTH	LONGMONT	1	Inactive
LONGMONT CITY OF	LONGMONT	102,866	Active
LONGS PEAK WD	LONGMONT	3,200	Active
LOUISVILLE CITY OF	LOUISVILLE	20,975	Active
LYONS TOWN OF	LYONS	2,990	Active
MAPLE GROVE WD	LAFAYETTE	35	Active
MEADOW MTN WATER SUPPLY	ALLENSPARK	76	Active
MEEKER PARK WTR	ALLENSPARK	200	Inactive
MILE HI WATER INC HAULER	BOULDER	1,000	Active
MOUNTAIN VIEW MHP	LOVELAND	211	Active
NEDERLAND TOWN OF	NEDERLAND	2,406	Active
NORTH BROADWAY TR CT	BOULDER	50	Inactive
OLDE STAGE WD	WHEAT RIDGE	250	Active
ORCHARD GROVE MHP	BLOOMFIELD HILLS	552	Inactive
PANORAMA PARK WUA	BOULDER	0	Inactive
PARCO DELLO ZINGARO MHP	LOUISVILLE	201	Inactive
PINE BROOK HILLS WD	BOULDER	1,100	Active
PONDEROSA TRLR PK	BOULDER II	200	Inactive
RIVERBEND MHP	LYONS	71	Inactive
SAN LAZARO MFCTD HOUSING COMMUNITY	LAFAYETTE	844	Active
SANS SOUCI MHP	GREELEY	150	Active
SHADY ACRES MHP	FT COLLINS	0	Inactive
SHANNON WSD	BOULDER	450	Active
SKYLARK MOBILE HOME COMMUNITY	LAFAYETTE	342	Active
SOUTH VALE HOA	BOULDER	0	Inactive
SPRING VALLEY MUTUAL WA	BOULDER	100	Active
SPRING VALLEY WATER USERS	BOULDER	125	Inactive
SPRING VALLEY WTR USERS ASSN	BOULDER	125	Inactive
ST VRAIN MHP LLC	LAKEWOOD	544	Active
STEAMBOAT WC	LYONS	25	Inactive
SUPERIOR MD NO 1	SUPERIOR	17,900	Active
TABLE MESA VILLAGE MHP	WHEAT RIDGE	75	Active
UNION AVE WTR USERS ASSN	BOULDER	48	Inactive
VISTA VILLAGE MHP	LOS ANGELES	750	Active
WARD TOWN OF	WARD	230	Active