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Wyoming Water Quality
766 public water systems serving 639,288 people.
Water Systems
766
Total Violations
32,465
Violation Rate
94.5%
PFAS Detection
54.5%
18 of 33 tested
Largest Water Systems
CHEYENNE BOARD OF PUBLIC UTILITIES
CHEYENNE, WY · 64,165 served
CASPER, CITY OF
CASPER, WY · 59,000 served
LARAMIE, CITY OF
LARAMIE, WY · 32,395 served
GILLETTE, CITY OF
GILLETTE, WY · 32,222 served
JACKSON, TOWN OF
JACKSON, WY · 24,760 served
ROCK SPRINGS, CITY OF
ROCK SPRINGS, WY · 24,000 served
SHERIDAN, CITY OF
SHERIDAN, WY · 22,700 served
EVANSTON, CITY OF
EVANSTON, WY · 12,000 served
GREEN RIVER, CITY OF
GREEN RIVER, WY · 10,500 served
RIVERTON, CITY OF
RIVERTON, WY · 10,330 served
CODY, CITY OF
CODY, WY · 10,224 served
SOUTH CHEYENNE WATER & SEWER DISTRICT
CHEYENNE, WY · 10,000 served
RAWLINS WATER SUPPLY, CITY OF
RAWLINS, WY · 9,006 served
YNP-OLD FAITHFUL
YELLOWSTONE, WY · 7,675 served
LANDER, CITY OF
LANDER, WY · 7,615 served
NORTHWEST RURAL WATER DISTRICT
CODY, WY · 7,330 served
TORRINGTON MUNICIPAL WATER DEPT, CITY OF
TORRINGTON, WY · 6,847 served
DOUGLAS, CITY OF
DOUGLAS, WY · 6,400 served
POWELL, CITY OF
POWELL, WY · 6,310 served
YNP - LAKE VILLAGE
YELLOWSTONE, WY · 5,925 served
Most Violations
#1 MARBLETON, TOWN OF MARBLETON
1,526 #2 ALCOVA DAM RV PARK CASPER
732 #3 BTNF-BLACKROCK WORK CENTER JACKSON
679 #4 LEISURE VALLEY INC/ STAR VALLEY RV PARK GROVER
665 #5 JEFFREY CITY WATER & SEWER DISTRICT JEFFREY CITY
598 #6 SNAKE RIVER MOBILE HOME PARK DALLAS
457 #7 MOUNTAIN VILLAGE PARKS JAMESTOWN
445 #8 PINE BLUFFS, TOWN OF FORT COLLINS
391 #9 HAGENS ESTATES GILLETTE
373 #10 JADE MHC RIVERTON
367 #11 LANCE CREEK WATER DISTRICT LANCE CREEK
361 #12 STROUP TRAILER COURT GILLETTE
335 #13 MANVILLE, TOWN OF MANVILLE
314 #14 BROKEN WRENCH LLC CASPER
308 #15 COUNTRYSIDE COURT MILLS
301 Counties in Wyoming
Laramie
51 systems · 96,725 served
· 2,478 violations
Natrona
48 systems · 80,738 served
· 2,056 violations
Teton
116 systems · 78,802 served
· 5,306 violations
Sweetwater
47 systems · 53,285 served
· 1,717 violations
Campbell
68 systems · 51,714 served
· 2,720 violations
Albany
24 systems · 38,088 served
· 740 violations
Park
49 systems · 38,068 served
· 951 violations
Sheridan
21 systems · 27,820 served
· 524 violations
Fremont
60 systems · 26,396 served
· 2,787 violations
Uinta
13 systems · 20,786 served
· 338 violations
Lincoln
44 systems · 19,227 served
· 2,914 violations
Carbon
26 systems · 18,284 served
· 1,289 violations
Converse
19 systems · 14,323 served
· 520 violations
Big Horn
28 systems · 11,830 served
· 799 violations
Platte
28 systems · 10,003 served
· 995 violations
Goshen
17 systems · 9,851 served
· 510 violations
Crook
27 systems · 8,739 served
· 675 violations
Washakie
13 systems · 7,872 served
· 255 violations
Weston
12 systems · 6,536 served
· 726 violations
Sublette
28 systems · 6,181 served
· 2,695 violations
Johnson
13 systems · 5,523 served
· 351 violations
Hot Springs
8 systems · 4,429 served
· 261 violations
Niobrara
5 systems · 3,918 served
· 842 violations