Colorado Water Quality
1,166 water systems serving 7,311,422 people. 39,617 total violations on record.
Safety Grade Distribution
A
428
37%
B
109
9%
C
444
38%
D
86
7%
F
99
8%
1,166
Water Systems
7,311,422
Population Served
39,617
Total Violations
5,061
Health-Based
Most Contaminated Systems
PACHECO TRAILER PARK
36 served958 violations958 recent
D
MOUNTAIN VILLAGE TOWN OF
9,700 served554 violations537 recent
C
HIDDEN SPRINGS RANCH
27 served373 violations373 recent
C
MAY VALLEY WA
1,500 served614 violations348 recent
F
FLORISSANT WSD
250 served426 violations287 recent
F
PARKVILLE WD
7,500 served566 violations275 recent
C
RANGEVIEW MD
2,487 served259 violations258 recent
C
SHERIDAN LAKE WD
148 served293 violations249 recent
F
ASPEN VILLAGE MD
300 served420 violations233 recent
D
G AND M MOBILE HOME PARK
30 served215 violations215 recent
D
Cleanest Water Systems
AURORA CITY OF
533,407 served4 violations
A
COLORADO SPRINGS UTILITIES
464,111 served2 violations
A
PUEBLO BOARD OF WW
114,070 served9 violations
A
HIGHLANDS RANCH WSD
103,444 served4 violations
A
CONSOLIDATED MUTUAL MAPLE GROVE
81,400 served6 violations
A
SOUTH ADAMS COUNTY WSD
74,341 served0 violations
A
FT COLLINS LOVELAND WD
63,532 served0 violations
A
SOUTHGATE WSD
55,000 served0 violations
A
EAGLE RIVER WSD
51,515 served0 violations
A
NORTHGLENN CITY OF
48,927 served0 violations
A
Largest Water Systems in Colorado
| Water System | Grade | Population | Violations |
|---|---|---|---|
| DENVER WATER BOARD | C | 1,287,000 | 104 |
| AURORA CITY OF | A | 533,407 | 4 |
| COLORADO SPRINGS UTILITIES | A | 464,111 | 2 |
| THORNTON CITY OF | C | 226,465 | 26 |
| WESTMINSTER CITY OF | C | 202,078 | 9 |
| FT COLLINS CITY OF | C | 179,901 | 22 |
| ARVADA CITY OF | C | 171,610 | 16 |
| BOULDER CITY OF | C | 166,080 | 10 |
| GREELEY CITY OF | C | 132,310 | 15 |
| PUEBLO BOARD OF WW | A | 114,070 | 9 |
| CASTLE ROCK TOWN OF | C | 106,822 | 35 |
| BROOMFIELD CITY AND COUNTY OF | D | 106,153 | 8 |
| HIGHLANDS RANCH WSD | A | 103,444 | 4 |
| LONGMONT CITY OF | C | 102,866 | 8 |
| LOVELAND CITY OF | C | 95,471 | 12 |
| UTE WCD | C | 91,186 | 9 |
| CONSOLIDATED MUTUAL MAPLE GROVE | A | 81,400 | 6 |
| PARKER WSD | C | 75,949 | 19 |
| SOUTH ADAMS COUNTY WSD | A | 74,341 | 0 |
| EAST CHERRY CREEK VALLEY WSD | C | 66,130 | 39 |
Contaminants in Colorado
Cities in Colorado
DENVER(22)AURORA(13)COLORADO SPRINGS(36)FORT COLLINS(10)LAKEWOOD(54)THORNTON(5)WESTMINSTER(3)ARVADA(3)BOULDER(9)GREELEY(8)LITTLETON(19)PUEBLO(8)GRAND JUNCTION(5)CASTLE ROCK(8)BROOMFIELD(4)CENTENNIAL(10)LONGMONT(2)PARKER(5)HIGHLANDS RANCH(3)ENGLEWOOD(6)LOVELAND(9)COMMERCE CITY(1)BRIGHTON(8)GOLDEN(6)MONTROSE(16)VAIL(1)NORTHGLENN(1)FORT CARSON(1)DURANGO(36)WHEAT RIDGE(25)BERTHOUD(5)ERIE(2)CANON CITY(3)CLIFTON(2)ASPEN(9)LAFAYETTE(8)MONUMENT(6)PUEBLO WEST(2)STEAMBOAT SPRINGS(15)WINDSOR(16)BRECKENRIDGE(1)FIRESTONE(3)FOUNTAIN(3)PINE RIDGE(18)JOHNSTOWN(1)ESTES PARK(5)LOUISVILLE(1)EVANS(3)NIWOT(1)FORT MORGAN(2)GREENWOOD VILLAGE(10)FALCON(3)SUPERIOR(1)FREDERICK(2)EVERGREEN(5)USAF ACADEMY(1)GLENWOOD SPRINGS(30)WELLINGTON(2)LUCERNE(1)DOLORES(2)STERLING(3)GYPSUM(1)BLACK HAWK(1)FORT LUPTON(5)ROSEBUD(5)PEYTON(3)BELCOURT(1)TRINIDAD(10)CASTLE PINES(1)ALAMOSA(3)PAGOSA SPRINGS(5)WINTER PARK(3)SILVERTHORNE(6)SEVERANCE(1)FEDERAL HEIGHTS(1)GUNNISON(4)RIFLE(4)KEYSTONE(2)IDAHO SPRINGS(1)LA JUNTA(7)MORRISON(2)REDVALE(2)CORTEZ(4)MILLIKEN(1)DILLON(4)CRAIG(1)TELLURIDE(5)DELTA(1)NEW TOWN(7)WOODLAND(1)CEDAREDGE(19)LAMAR(3)BASALT(8)CARBONDALE(18)FLORENCE(3)BROWNING(8)LEADVILLE(3)EAGLE(2)EATON(1)MANITOU SPRINGS(1)