Maryland Well Data › Montgomery County

Montgomery County, Maryland: well depth, owners & drilling cost

Name: Montgomery County, Maryland water well statistics
Creator: Maryland Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 938 USGS NWIS records · verified 2026-08-27

112 ftmedian well depth

80 ft–170 fttypical depth range

—median depth since 2016

How deep are wells in Montgomery County, Maryland?

The median drilled well depth in Montgomery County is 112 ft, based on 938 wells with recorded depths in the state USGS NWIS database. Half of all wells fall between 80 ft and 170 ft; 90% are shallower than 275 ft. Wells drilled since 2016 have a median depth of —.

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

Applying published per-foot rates to the local median depth of 112 ft: drilling and casing alone typically runs $2,800–$7,280; a complete system including pump, pressure tank, and hookup typically runs $6,720–$11,200. Actual quotes depend on site access, geology, and casing requirements.

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Drilled depth distribution

0–50 ft 84 50–100 ft 281 100–150 ft 259 150–200 ft 123 200–300 ft 111 300–400 ft 46 400–600 ft 27 600+ ft 7

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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.