Maine Well Data › Knox County

Knox County, Maine: well depth, water level & drilling cost

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

✓ 3,818 Maine Geological Survey records · verified 2026-10-19

200 ftmedian well depth

130 ft–295 fttypical depth range

12 ftmedian static water level

7 gpmmedian yield (3,522 tests)

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How deep are wells in Knox County, Maine?

The median drilled well depth in Knox County is 200 ft, based on 3,768 wells with recorded depths in the state Maine Geological Survey database. Half of all wells fall between 130 ft and 295 ft; 90% are shallower than 380 ft. Wells drilled since 2016 have a median depth of 260 ft.

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

Applying published per-foot rates to the local median depth of 260 ft: drilling and casing alone typically runs $6,500–$16,900; a complete system including pump, pressure tank, and hookup typically runs $15,600–$26,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Knox County?

The median static water level is 12 ft below ground surface (middle half of wells: 7 ft–22 ft), from 684 measurements.

How much water do wells in Knox County produce?

The median tested yield is 7 gpm (middle half: 3 gpm–15 gpm), from 3,522 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 169 50–100 ft 317 100–150 ft 757 150–200 ft 570 200–300 ft 1,040 300–400 ft 655 400–600 ft 234 600+ ft 26

Who drills wells in Knox County?

Companies by number of wells completed in this county, per the well cards Maine drillers file with the Maine Geological Survey.

Driller	Wells since 2016
HATCH WELL DRILLERS	389
REILLY WELL DRILLING	263
AFFORDABLE WELL DRILLING INC	131
TED MCLEOD, INC.	92
GALLANT'S ARTESIAN WELLS	41
KENNEBEC WELL DRILLING	40
CARMEL WELL DRILLING LLC	23
LAWRENCE LORD & SONS INC	12

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Well records by ZIP code in Knox County

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

Union (04862) — 547 wells, median 200 ft
Warren (04864) — 508 wells, median 220 ft
Washington (04574) — 374 wells, median 220 ft
Friendship (04547) — 333 wells, median 199 ft
West Rockport (04865) — 259 wells, median 188 ft
Hope (04847) — 237 wells, median 220 ft
Spruce Head (04859) — 219 wells, median 180 ft
Owls Head (04854) — 211 wells, median 155 ft
Cushing (04563) — 200 wells, median 200 ft
Thomaston (04861) — 198 wells, median 180 ft
Camden (04843) — 195 wells, median 207 ft
South Thomaston (04858) — 156 wells, median 174 ft
Tenants Harbor (04860) — 136 wells, median 158 ft
Rockport (04856) — 104 wells, median 204 ft
Rockland (04841) — 89 wells, median 240 ft
Vinalhaven (04863) — 80 wells, median 220 ft
North Haven (04853) — 69 wells, median 251 ft
Port Clyde (04855) — 50 wells, median 165 ft

Method: medians computed from Maine Geological Survey records (Maine Geological Survey well database, excluding test, observation and monitoring wells; depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.