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Well Drillers Near Mayville, Wisconsin

A typical Mayville area well penetrates unconsolidated clay (sometimes gravelly), soft sediments, and a sequence of dolomitic limestone and shale, reaching bedrock within 80–140 ft; deeper wells encounter alternating limestone, shale, and, in a minority, sandstone (up to ~600 ft).

Showing contractors within 60 miles of Mayville. 41 results found.

C&C Pumps logo

C&C Pumps

1480 WI, Hartford, WI 53027

Phone: (262) 789-7334
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View Local Geology Report

A geological estimate for the Mayville area.

120 ft

Typical Well Depth

50 ft

Static Water Level

Rotary - Mud Circulation

Recommended Method

Detailed Summary

In the Mayville region, the most typical subsurface profile begins with a significant thickness of unconsolidated clay (sometimes including gravel, stones, or soft sand), generally from ground surface to 30–90 feet—averaging ~55 ft. Below this, hard or silty clay sometimes grades into a weathered or broken dolomitic limestone (Limerock) layer, which transitions to more competent limestone/dolostone. From about 80 ft downward, most wells encounter alternating layers of limestone and shale. High-capacity or deeper wells may reach a deeper sequence of massive limestone, thick shale, then optionally down to sandstone below 600 ft. For residential wells (yielding 5–15+ GPM), total depths of 80–180 ft are typical, with water most commonly sourced from shallow limestone or shale fractures. Static water levels average between 40–60 feet below the surface.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
016 ftClayBrown, silty to sandy clay, uppermost soil zone, occasionally some gravel/stones near baseColor: Brown/Gray
Hardness: Soft
1655 ftClay with Gravel/StonesDense clay with scattered stones and/or gravel—may include soft/silty/clayey intervals or minor sandColor: Brown-Gray
Hardness: Medium
5590 ftLimestone (weathered)Broken or weathered dolomite/limestone, partially clay-filled; transitional bedrock interfaceColor: Gray
Hardness: Soft to Medium
90130 ftLimestone/DolomiteMassive dolomite/limestone, relatively competent; main aquifer zone for residential supplyColor: Gray
Hardness: Hard
130185 ftShaleGray, soft to hard shale, acts as confining layer; water strikes possible in fractured shaleColor: Gray/Greenish
Hardness: Soft to Hard
185240 ftLimestoneLimestone or dolostone intervals, possible water-bearing fractures, deeper wells onlyColor: Light Gray
Hardness: Medium-Hard
240390 ftShaleThick shale (gray/green), less likely to be major aquifer, deeper wells onlyColor: Gray-Green
Hardness: Soft
390615 ftLimestoneMassive limestone/dolomite, interbedded, deeper municipal or high-capacity supplyColor: Gray/Tan
Hardness: Hard
615640 ftSandstoneClean, fine sandstone; only present in deepest municipal/hicap wellsColor: Light Brown/Tan
Hardness: Medium