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Well Drillers Near Wales, Wisconsin

The typical geological profile in Waukesha County, WI features a surficial deposit of clay/sandy clay with interbedded sand & gravel, underlain by limestone or dolomite bedrock.

Showing contractors within 60 miles of Wales. 54 results found.

C&C Pumps logo

C&C Pumps

1480 WI, Hartford, WI 53027

Phone: (262) 789-7334
Quote Available

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A geological estimate for the Wales area.

130 ft

Typical Well Depth

70 ft

Static Water Level

Rotary - Mud Circulation

Recommended Method

Detailed Summary

Based on synthesis of sampled well logs from Waukesha County (WI), the most common sequence is a surface layer of sandy clay, clay, or clay with gravel/cobbles, often transitioning through sand and gravel intervals, followed by a persistent limestone/dolomite bedrock. Some logs show limited shale or shaley zones within the carbonate section, but consistent thick clay-only layers or extremely deep unconsolidated materials are present only as local anomalies. The transition from unconsolidated/glacial materials to competent bedrock typically occurs between 70 and 150 feet. Wells that yield 5–15+ GPM for residential use frequently case through all unconsolidated zones and set the pump just into limestone/dolomite below the sand/gravel aquifer. High-capacity wells are drilled significantly deeper within the bedrock to secure higher yield. Most wells employ rotary mud circulation; casing to bedrock is standard, with cement or bentonite grout sealing the upper interval.

Expected Geological Layers

Depth (Feet)Formation TypeDescriptionCharacteristics
0 – 15 ftClay/Sandy Clay (may contain gravel, cobbles, boulders)Surface deposits of brown/tan/gray clay or sandy clay with occasional cobbles/gravel. Caving: variable.Color: Brown/Tan/Gray
Hardness: Soft
15 – 60 ftSand & GravelUnconsolidated sand and gravel, water-bearing, often gray/brown. Transition zone between clay and bedrock.Color: Brown/Gray
Hardness: Loose
60 – 120 ftSandy Clay/Clay or Sand & Gravel (variable, transitional)Interbedded sandy clay, clay, and sand & gravel; some lateral variability but generally fine-grained with lower permeability.Color: Brown/Gray
Hardness: Soft to Firm
120 – 150 ftLimestone/Dolomite (top, often thinly bedded, may be shaley)Limestone or dolomite, sometimes shaley or thin bedded at the upper part of bedrock; gray to yellow, competent, non-caving.Color: Gray/Yellow
Hardness: Hard
150 – 250 ftLimestone/Dolomite (massive, water-bearing)Main bedrock aquifer, massive to fractured limestone/dolomite. Good water yield. Color gray to yellow. Few shale zones.Color: Gray/Yellow
Hardness: Hard