⟁ California Well Data field records · 2026 survey

California Well Data › Contra Costa County › Bethel Island (94511)

Bethel Island, CA (94511): well depth, water level & drilling cost

✓ 206 DWR records · Contra Costa County

270 ftmedian well depth
200 ft–320 fttypical depth range
12 ftmedian static water level
91 gpmmedian yield (28 tests)

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How deep are wells in and around Bethel Island (94511), California?

The median drilled well depth in and around Bethel Island (94511) is 270 ft, based on 155 wells with recorded depths in the state DWR database. Half fall between 200 ft and 320 ft; 90% are shallower than 360 ft.

How much does it cost to drill a well in and around Bethel Island (94511)?

Applying published per-foot rates to the local median depth of 270 ft: drilling and casing alone typically runs $6,750–$17,550; a complete system including pump, pressure tank, and hookup typically runs $16,200–$27,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Bethel Island (94511)?

The median static water level is 12 ft below ground surface (middle half of wells: 8 ft–18 ft), from 78 measurements.

Drilled depth distribution

0–50 ft 2 50–100 ft 5 100–150 ft 4 150–200 ft 18 200–300 ft 63 300–400 ft 50 400–600 ft 10 600+ ft 3
Looking at a specific property in Bethel Island (94511)?

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Get quotes from drillers who work in Bethel Island (94511)

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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.