⟁ Wisconsin Well Data field records · 2026 survey

Wisconsin Well Data › Marathon County

Marathon County, Wisconsin: well depth, water level & drilling cost

✓ 26,449 WI DNR records · verified 2026-06-30

140 ftmedian well depth
70 ft–200 fttypical depth range
17 ftmedian static water level
8 gpmmedian yield (12,704 tests)

How deep are wells in Marathon County, Wisconsin?

The median drilled well depth in Marathon County is 140 ft, based on 13,544 wells with recorded depths in the state WI DNR database. Half of all wells fall between 70 ft and 200 ft; 90% are shallower than 262 ft. Wells drilled since 2016 have a median depth of 180 ft.

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

Applying published per-foot rates to the local median depth of 180 ft: drilling and casing alone typically runs $4,500–$11,700; a complete system including pump, pressure tank, and hookup typically runs $10,800–$18,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Marathon County?

The median static water level is 17 ft below ground surface (middle half of wells: 12 ft–25 ft), from 13,163 measurements.

How much water do wells in Marathon County produce?

The median tested yield is 8 gpm (middle half: 3 gpm–15 gpm), from 12,704 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 2,105 50–100 ft 2,521 100–150 ft 2,566 150–200 ft 1,578 200–300 ft 3,626 300–400 ft 1,061 400–600 ft 78 600+ ft 9

Who drills wells in Marathon County?

Companies by number of wells completed in this county since 2016, per filed well construction reports (Wisconsin DNR).

DrillerWells since 2016
DREWS WELL DRILLING INC441
LANG WELL DRILLING CO INC341
HORNUNG, JAMES JR319
BRUNNER WELL DRILLING LLC222
HAUPT WELL DRLG INC165
HEEG WELL AND PUMP LLC135
JAMES HORNUNG JR99
LANG, ROGER D48

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Method: medians computed from WI DNR records (drilled water wells (well-construction reports) — geothermal loop/heat-exchange, anode, test and dry holes 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.