System Statistics
Mni Wiconi Rural Water Supply
Service Area: 12,500 Square Miles
Total New Pipeline Miles: 4,200 Miles
Population Served: 52,000
Planning Through Construction: 1988-Present
Project Sponsors:
Oglala Sioux Tribe
Rosebud Sioux Tribe
West River/Lyman Jones, Inc.
Lower Brule Sioux Tribe
Intake and Water Treatment Plant
Water Supply: Missouri River below Oahe Reservoir
Intake Capacity: 14 MGD
Treated Water Capacity: 13.4 MGD
Major Unit Process:
Barrel Slotted Intake Screens
42-inch Buried Intake Pipeline
Intake Wetwell and Pump Station
Preoxidation
Flocculation
Sedimentation
Filtration
Disinfection
High Service Pumping
Sludge Lagoons
OSRWSS Core Pipeline
12-inch to 24-inch High-Pressure Pipe
(coated metallic pipe and PVC)
185 Miles Designed and Constructed
Corrosion Protection
Supervisory Control and Data Acquisition System (SCADA)
Pump Stations
Operation Unit Facilities for:
Rosebud Indian Reservation
West River/Lyman Jones, Inc.
Lower Brule Indian Reservation
Main Distribution Pipeline
Service Pipelines
Service Connections
Wells
Water Storage Reservoirs
Pump Stations
365 Miles of Main Distribution Pipeline 3"-14"
330 Miles of Service Pipeline 2"
1,525 Service Connections
15 Water Supply Wells 50 gpm-300 gpm
19 Steel Water Storage Reservoirs 90,000 gal-500,000 gal
21 Pump Stations 100 gpm-1,400 gpm
