Delaware Well Data › New Castle County

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

Name: New Castle County, Delaware water well statistics
Creator: Delaware Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 9,541 Delaware DNREC records · verified 2026-10-19

140 ftmedian well depth

82 ft–200 fttypical depth range

30 ftmedian static water level

20 gpmmedian yield (3,452 tests)

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How deep are wells in New Castle County, Delaware?

The median drilled well depth in New Castle County is 140 ft, based on 9,433 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.

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 3,254 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 3,452 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 1,525 50–100 ft 1,245 100–150 ft 2,380 150–200 ft 1,640 200–300 ft 1,378 300–400 ft 712 400–600 ft 454 600+ ft 99

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Well records by ZIP code in New Castle County

Median depth, water level, and yield for each ZIP code with recorded wells.

Townsend (19734) — 1,947 wells, median 123 ft
Middletown (19709) — 1,335 wells, median 101 ft
Kirkwood (19708) — 633 wells, median 42 ft
Wilmington (19807) — 591 wells, median 300 ft
Odessa (19730) — 518 wells, median 175 ft
Saint Georges (19733) — 473 wells, median 110 ft
Hockessin (19707) — 463 wells, median 220 ft
Port Penn (19731) — 423 wells, median 120 ft
Yorklyn (19736) — 306 wells, median 262 ft
Winterthur (19735) — 204 wells, median 300 ft
Newark (19716) — 199 wells, median 282 ft
Bear (19701) — 178 wells, median 80 ft
Newark (19717) — 167 wells, median 208 ft
Newark (19711) — 131 wells, median 265 ft
Newark (19702) — 127 wells, median 134 ft
Wilmington (19810) — 105 wells, median 245 ft
New Castle (19720) — 94 wells, median 41 ft
Wilmington (19808) — 94 wells, median 245 ft
New Castle (19726) — 81 wells, median 40 ft
Montchanin (19710) — 67 wells, median 400 ft
Newark (19712) — 62 wells, median 185 ft
Wilmington (19804) — 62 wells, median 70 ft
Newark (19713) — 58 wells, median 33 ft
Wilmington (19803) — 58 wells, median 280 ft

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.