⟁ South Carolina Well Data field records · 2026 survey

South Carolina Well Data › Allendale County

Allendale County, South Carolina: well depth, owners & drilling cost

✓ 203 USGS NWIS records · verified 2026-08-28

321 ftmedian well depth
230 ft–592 fttypical depth range
—median depth since 2016

How deep are wells in Allendale County, South Carolina?

The median drilled well depth in Allendale County is 321 ft, based on 203 wells with recorded depths in the state USGS NWIS database. Half of all wells fall between 230 ft and 592 ft; 90% are shallower than 800 ft. Wells drilled since 2016 have a median depth of —.

How much does it cost to drill a well in Allendale County?

Applying published per-foot rates to the local median depth of 321 ft: drilling and casing alone typically runs $8,025–$20,865; a complete system including pump, pressure tank, and hookup typically runs $19,260–$32,100. Actual quotes depend on site access, geology, and casing requirements.

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Drilled depth distribution

0–50 ft 3 50–100 ft 3 100–150 ft 7 150–200 ft 18 200–300 ft 48 300–400 ft 59 400–600 ft 14 600+ ft 51
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Method: medians computed from USGS NWIS records (USGS NWIS groundwater inventory, water-supply wells only (monitoring wells, test holes and injection wells excluded), and only wells carrying a measured depth). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.