Alexander Drilling Company
Hill City, SD 57745
Residential Well DrillingCommercial Well DrillingTest Well Drilling+7 more
Custer, South Dakota
Well Drillers Near Custer, South Dakota
Typical Custer area wells encounter a shallow unconsolidated drift layer, underlain by thick sequences of gray and brown schist (often fractured and water-bearing).
Showing contractors within 60 miles of Custer. 20 results found.
- Typical depth
- 120 ft
- Water table
- 70 ft
- Contractors
- 20
20 Contractors
Sort by:1-20 of 20
Scion Drilling LLC
Custer, SD 57730
Residential Well DrillingCommercial Well DrillingTest Well Drilling+6 more
Dependable Well Service
Hot Springs, SD 57747
Well DrillingWell MaintenanceFiltration
Geo Enterprises, Inc.
Rapid City, SD 57703-8531
Residential Well DrillingWell MaintenanceWell Abandonment+2 more
Grimm's Pump & Industrial Supply
2.2 (5)
Rapid City, SD 57701
Pump ServicesPressure Tank Installation
Johnathan Johnson Well Service
Newcastle, WY 82701
Pump RepairPump ReplacementSubmersible Pumps+7 more
Taylor Drilling Company
Rapid City, SD 57702-8062
Well DrillingMonitoring WellsGeotechnical
WaterTree | Drinking Water • Water Softeners • Water Treatment
5.0 (5)
Rapid City, SD 57702
FiltrationSediment FiltrationWhole House Filtration+2 more
R W Riehemann Well Services
Upton, WY 82730
Well DrillingPump ServicesWell Maintenance
Browse the full directory
Thousands more licensed contractors across all 50 states.
Browse all of South Dakota
See every licensed contractor across South Dakota.
← All South Dakota contractorsWell records near Custer
Check depths and logs of existing wells in the area before you drill.
Open well map →South Dakota well owner guide
Costs, permits, maintenance tips for private wells in South Dakota.
Open guide →Not in Custer? Search well drilling near me in the national directory, or find well repair near me and well pump service near me for work on an existing well.
View Local Geology Report
A geological estimate for the Custer area.
- Typical Well Depth
- 120 ft
- Static Water Level
- 70 ft
- Recommended Method
- Rotary - Mud Circulation
Detailed Summary
Based on well logs from across the Custer area, the most common lithological sequence is an initial unconsolidated or drift cover (often referred to as 'dirt', 'drift', or 'overburden'), generally less than 10-15 feet thick. Beneath this cover lies a sequence of schist, varying in color from gray to brown, often with notable fracturing that enhances water yield. The schist constitutes the main aquifer-bearing formation, typically extending from just beneath the drift down to depths of 120-180 feet or more. Fractured zones within the schist commonly provide the best groundwater yields. Outlier lithologies and thin interbeds (such as minor quartzite or slate) are seldom significant and not included in this representative profile.
Expected Geological Layers
| Depth (Feet) | Formation Type | Description | Characteristics |
|---|---|---|---|
| 0 – 10 ft | Unconsolidated drift / overburden | Loose soil, sand, minor clay. Initial cover before rock. | Color: Brown to gray Hardness: Very loose |
| 10 – 120 ft | Brown and gray schist (moderately to highly fractured) | Metamorphic rock, occasionally fractured producing water; gray and brown colors; occasional minor quartzite/sandy layers. | Color: Gray, brown Hardness: Hard, but water-bearing when fractured |
| 120 – 180 ft | Gray and brown schist (deeper, less fractured) | Primarily schist continuing to depth; generally less fractured, but some wells report water at these levels. | Color: Gray, brown Hardness: Hard |