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South Dakota Water Quality
654 public water systems serving 915,901 people.
Water Systems
654
Total Violations
56,254
Violation Rate
91.6%
PFAS Detection
85.7%
42 of 49 tested
Largest Water Systems
SIOUX FALLS
SIOUX FALLS, SD · 216,462 served
RAPID CITY
RAPID CITY, SD · 72,009 served
ABERDEEN
ABERDEEN, SD · 27,989 served
BROOKINGS MUNICIPAL UTILITIES
BROOKINGS, SD · 23,377 served
WATERTOWN MUNICIPAL UTILITIES
WATERTOWN, SD · 23,230 served
WEB WATER DEVELOPMENT ASSOCIATION
ABERDEEN, SD · 20,750 served
MITCHELL
MITCHELL, SD · 15,651 served
YANKTON
YANKTON, SD · 15,411 served
HURON
HURON, SD · 14,263 served
PIERRE
PIERRE, SD · 14,091 served
BOX ELDER
BOX ELDER, SD · 14,000 served
MINNEHAHA COMMUNITY WATER CORP
DELL RAPIDS, SD · 13,435 served
BY WATER DISTRICT
TABOR, SD · 13,320 served
SPEARFISH
SPEARFISH, SD · 12,193 served
MID-DAKOTA RURAL WATER
MILLER, SD · 11,833 served
VERMILLION
VERMILLION, SD · 11,695 served
RAPID VALLEY SANITARY DISTRICT
RAPID CITY, SD · 11,408 served
BRANDON
BRANDON, SD · 11,048 served
HARRISBURG
HARRISBURG, SD · 10,297 served
ELLSWORTH AFB
ELLSWORTH AFB, SD · 9,100 served
Most Violations
#1 SOUTHBROOK ESTATES BROOKINGS
2,183 #2 BATESLAND MARTIN
827 #3 HURON COLONY HURON
779 #4 MARVIN SOUTH SHORE
684 #5 SIPHON HILL WATER ASSOCIATION RAPID CITY
643 #6 SHIRT TAIL GULCH DEVELOPMENT BLACK HAWK
622 #7 ROCK RIDGE COURT RAPID CITY
607 #8 PROVO AREA WATER SYSTEM EDGEMONT
585 #9 GLENDALE COLONY FRANKFORT
585 #10 EDELWEISS MOUNTAIN IMPROVEMENT ASSOC BLACK HAWK
558 #11 SACORA MOBILE HOME PARK BLACK HAWK
556 #12 NISLAND NISLAND
539 #13 76 RANCH ESTATES BLACK HAWK
531 #14 WHITE ROCK COLONY ROSHOLT
523 #15 BUFFALO GAP BUFFALO GAP
514 Counties in South Dakota
Minnehaha
15 systems · 254,737 served
· 868 violations
Pennington
157 systems · 140,305 served
· 11,864 violations
Brookings
12 systems · 41,264 served
· 2,574 violations
Brown
21 systems · 38,081 served
· 1,750 violations
Lincoln
8 systems · 35,801 served
· 350 violations
Hughes
6 systems · 27,114 served
· 317 violations
Lawrence
73 systems · 25,648 served
· 6,945 violations
Codington
6 systems · 24,705 served
· 485 violations
Edmunds
8 systems · 23,620 served
· 157 violations
Meade
56 systems · 22,391 served
· 3,218 violations
Davison
4 systems · 19,917 served
· 178 violations
Bon Homme
7 systems · 18,388 served
· 575 violations
Clay
4 systems · 17,173 served
· 71 violations
Yankton
9 systems · 16,948 served
· 551 violations
Beadle
7 systems · 15,273 served
· 1,603 violations
Union
8 systems · 14,087 served
· 604 violations
Custer
51 systems · 13,071 served
· 2,359 violations
Charles Mix
6 systems · 10,052 served
· 378 violations
Lake
5 systems · 9,782 served
· 683 violations
Moody
7 systems · 9,401 served
· 920 violations
Butte
12 systems · 9,372 served
· 1,678 violations
Stanley
3 systems · 9,327 served
· 44 violations
Grant
5 systems · 9,119 served
· 827 violations
Tripp
3 systems · 8,104 served
· 262 violations
McCook
6 systems · 7,366 served
· 668 violations
Dewey
5 systems · 7,000 served
· 874 violations
Hamlin
6 systems · 6,877 served
· 434 violations
Fall River
14 systems · 6,440 served
· 1,994 violations
Roberts
11 systems · 6,241 served
· 1,527 violations
Kingsbury
7 systems · 5,786 served
· 523 violations
Showing top 30 of 65 counties.