| 3 SONS RV PARK | | | | 339 | Ground water | 705 SOUTH TIMBERLAND DRIVE
YANKTON, SD 57078 | | YANKTON | Yankton |
| 76 RANCH ESTATES | | | | 40 | Ground water | 11985 QUAAL ROAD
BLACK HAWK, SD 57718 | | BLACK HAWK, STURGIS | Lawrence |
| ABERDEEN | | | | 27,989 | Surface water | 12668 391ST AVENUE
ABERDEEN, SD 57401 | 6056267074 | ABERDEEN | Brown |
| ADDIE CAMP WATER AND SEPTIC | | | | 900 | Ground water | 5310 EBONY PLACE
PIEDMONT, SD 57769 | 6054312006 | PIEDMONT | Pennington |
| ALCESTER | | | | 820 | Ground water purchased | PO BOX 318
ALCESTER, SD 57001 | 6059342851 | ALCESTER | Union |
| ALEXANDRIA | | | | 649 | Surface water purchased | PO BOX 157
ALEXANDRIA, SD 57311 | 6052394220 | ALEXANDRIA | Hanson |
| ALPENA | | | | 212 | Surface water purchased | PO BOX 318-608 W 14TH ST
MILLER, SD 57362 | 6058533159 | ALPENA, MILLER | Jerauld |
| AMERICAN PINES CABINS | | | | 40 | Ground water | 1315 OLD HILL CITY ROAD
KEYSTONE, SD 57751 | 6056665475 | KEYSTONE | Pennington |
| AMHERST WATER COMPANY | | | | 40 | Ground water purchased | PO BOX 49
BRITTON, SD 57430 | 6054485417 | AMHERST, BRITTON | Marshall |
| APPLE SPRINGS SUBDIVISION | | | | 180 | Ground water | 22865 S ROCHFORD
HILL CITY, SD 57745 | | FLOWER MOUND, HILL CITY | Lawrence |
| AR RANCH | | | | 88 | Ground water | PO BOX 761
BLACKHAWK, SD 57718 | 6057864366 | BLACKHAWK, RAPID CITY | Meade |
| ARLINGTON | | | | 915 | Ground water purchased | PO BOX 379
ARLINGTON, SD 57212 | 6059835251 | ARLINGTON | Kingsbury |
| ARMOUR | | | | 698 | Surface water purchased | PO BOX 415
ARMOUR, SD 57313 | 6057242167 | ARMOUR | Douglas |
| ATHLETIC CLUB OF THE BLACK HILLS | | | | 100 | Ground water | 7800 ALBERTTA DRIVE
RAPID CITY, SD 57702 | 6053430744 | RAPID CITY | Pennington |
| AURORA | | | | 1,200 | Ground water purchased | PO BOX 335
AURORA, SD 57002 | 6056933548 | AURORA | Brookings |
| AURORA-BRULE RURAL WATER SYSTEM | | | | 2,750 | Surface water | PO BOX 140
KIMBALL, SD 57355 | 6057786110 | KIMBALL | Aurora, Brule, Buffalo, Davison, Douglas, Jerauld |
| AUTUMN MEADOWS SANITARY DISTRICT | | | | 49 | Ground water | 5310 EBONY PLACE
PIEDMONT, SD 57769 | 6053917483 | BLACK HAWK, PIEDMONT | Meade |
| AVON | | | | 590 | Surface water purchased | PO BOX 207
AVON, SD 57315 | 6052863747 | AVON | Bon Homme |
| B & J MOBILE HOME PARK | | | | 135 | Ground water | PO BOX 9141
RAPID CITY, SD 57709 | | RAPID CITY | Pennington |
| BADGER | | | | 105 | Ground water purchased | PO BOX 44
BADGER, SD 57214 | 6059835121 | BADGER | Kingsbury |
| BADLANDS/WHITE RIVER KOA KAMPGROUND | | | | 174 | Ground water | 13752 S HWY 16
RAPID CITY, SD 57702 | | INTERIOR, RAPID CITY | Jackson |
| BALTIC | | | | 1,271 | Ground water purchased | PO BOX 327
BALTIC, SD 57003 | 6055295497 | BALTIC | Minnehaha |
| BATESLAND | | | | 148 | Surface water purchased | PO BOX 790 - 21809 OLD HWY 18
MARTIN, SD 57551 | 6054551367 | BATESLAND, MARTIN | Shannon |
| BATTLE CREEK CAMPING RESORT | | | | 79 | Ground water | 13803 BOX CANYON ROAD
HERMOSA, SD 57747 | 9403951843 | HERMOSA | Custer |
| BEAR BUTTE VALLEY WATER | | | | 450 | Ground water | PO BOX 351
STURGIS, SD 57785 | 6053471835 | STURGIS | Meade |