⟁ Delaware Well Data field records · 2026 survey

Delaware Well Data › New Castle County

New Castle County, Delaware: well depth, water level & drilling cost

✓ 9,531 Delaware DNREC records · verified 2026-08-22

140 ftmedian well depth
82 ft–200 fttypical depth range
30 ftmedian static water level
20 gpmmedian yield (3,445 tests)

How deep are wells in New Castle County, Delaware?

The median drilled well depth in New Castle County is 140 ft, based on 9,423 wells with recorded depths in the state Delaware DNREC database. Half of all wells fall between 82 ft and 200 ft; 90% are shallower than 320 ft. Wells drilled since 2016 have a median depth of 158 ft.

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

Applying published per-foot rates to the local median depth of 158 ft: drilling and casing alone typically runs $3,950–$10,270; a complete system including pump, pressure tank, and hookup typically runs $9,480–$15,800. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in New Castle County?

The median static water level is 30 ft below ground surface (middle half of wells: 18 ft–42 ft), from 3,245 measurements.

How much water do wells in New Castle County produce?

The median tested yield is 20 gpm (middle half: 10 gpm–40 gpm), from 3,445 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 1,524 50–100 ft 1,243 100–150 ft 2,378 150–200 ft 1,637 200–300 ft 1,377 300–400 ft 712 400–600 ft 453 600+ ft 99
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Method: medians computed from Delaware DNREC records (Delaware DNREC non-public well permits, water-supply wells only (monitoring, observation, soil borings, dewatering and remediation wells and un-drilled permits 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.