⟁ New York Well Data field records · 2026 survey

New York Well Data › Nassau County

Nassau County, New York: well depth, yield & drilling cost

✓ 1,153 NYSDEC records · verified 2026-08-19

100 ftmedian well depth
35 ft–250 fttypical depth range
35 gpmmedian yield (867 tests)

How deep are wells in Nassau County, New York?

The median drilled well depth in Nassau County is 100 ft, based on 1,149 wells with recorded depths in the state NYSDEC database. Half of all wells fall between 35 ft and 250 ft; 90% are shallower than 400 ft. Wells drilled since 2016 have a median depth of —.

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

Applying published per-foot rates to the local median depth of 100 ft: drilling and casing alone typically runs $2,500–$6,500; a complete system including pump, pressure tank, and hookup typically runs $6,000–$10,000. Actual quotes depend on site access, geology, and casing requirements.

Get quotes from drillers active in Nassau County

Free for property owners. We route your request only to licensed drillers who actually file well logs in Nassau County — never sold elsewhere.

What is the static water level in Nassau County?

Few static water level measurements are recorded for this county.

How much water do wells in Nassau County produce?

The median tested yield is 35 gpm (middle half: 20 gpm–50 gpm), from 867 pump tests. A typical household needs 5–10 gpm.

Pull every recorded well near a Nassau County address — $29

Drilled depth distribution

0–50 ft 359 50–100 ft 202 100–150 ft 113 150–200 ft 99 200–300 ft 175 300–400 ft 81 400–600 ft 91 600+ ft 29
Looking at a specific property in Nassau County?

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Method: medians computed from NYSDEC records (NYSDEC water well completion reports; depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.