South Dakota Well Data › Day County
Day County, South Dakota: well depth, water level & drilling cost
✓ 575 SD DANR records · verified 2026-08-24
How deep are wells in Day County, South Dakota?
The median drilled well depth in Day County is 125 ft, based on 575 wells with recorded depths in the state SD DANR database. Half of all wells fall between 58 ft and 240 ft; 90% are shallower than 428 ft. Wells drilled since 2016 have a median depth of 110 ft.
How much does it cost to drill a well in Day County?
Applying published per-foot rates to the local median depth of 110 ft: drilling and casing alone typically runs $2,750–$7,150; a complete system including pump, pressure tank, and hookup typically runs $6,600–$11,000. Actual quotes depend on site access, geology, and casing requirements.
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Drilled depth distribution
Who drills wells in Day County?
Companies by number of wells completed in this county, per the completion reports South Dakota drillers file with DANR.
See every driller with wells on record in Day County, ranked →
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Free lookup Property report — $29Method: medians computed from SD DANR records (SD DANR NR68 well completion reports, water wells only (monitoring, test-hole, geothermal-loop and dewatering records excluded); depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.