⟁ California Well Data field records · 2026 survey

California Well Data › Contra Costa County › Clayton (94517)

Clayton, CA (94517): well depth, water level & drilling cost

✓ 142 DWR records · Contra Costa County

200 ftmedian well depth
150 ft–300 fttypical depth range
40 ftmedian static water level
12 gpmmedian yield (43 tests)

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How deep are wells in and around Clayton (94517), California?

The median drilled well depth in and around Clayton (94517) is 200 ft, based on 126 wells with recorded depths in the state DWR database. Half fall between 150 ft and 300 ft; 90% are shallower than 355 ft.

How much does it cost to drill a well in and around Clayton (94517)?

Applying published per-foot rates to the local median depth of 200 ft: drilling and casing alone typically runs $5,000–$13,000; a complete system including pump, pressure tank, and hookup typically runs $12,000–$20,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Clayton (94517)?

The median static water level is 40 ft below ground surface (middle half of wells: 25 ft–99 ft), from 53 measurements.

Drilled depth distribution

0–50 ft 2 50–100 ft 14 100–150 ft 12 150–200 ft 22 200–300 ft 37 300–400 ft 31 400–600 ft 7 600+ ft 1
Looking at a specific property in Clayton (94517)?

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Get quotes from drillers who work in Clayton (94517)

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Part of Contra Costa County well records.

Method: medians computed from DWR records (filed well completion reports, water-supply uses only (destruction, repair and monitoring wells excluded); depths 0–5,000 ft), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.