⟁ California Well Data field records · 2026 survey

California Well Data › Alameda County › Castro Valley (94546)

Castro Valley, CA (94546): well depth, water level & drilling cost

✓ 102 DWR records · Alameda County

66 ftmedian well depth
32 ft–150 fttypical depth range
30 ftmedian static water level
20 gpmmedian yield (7 tests)

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How deep are wells in and around Castro Valley (94546), California?

The median drilled well depth in and around Castro Valley (94546) is 66 ft, based on 64 wells with recorded depths in the state DWR database. Half fall between 32 ft and 150 ft; 90% are shallower than 220 ft.

How much does it cost to drill a well in and around Castro Valley (94546)?

Applying published per-foot rates to the local median depth of 66 ft: drilling and casing alone typically runs $1,650–$4,290; a complete system including pump, pressure tank, and hookup typically runs $3,960–$6,600. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Castro Valley (94546)?

The median static water level is 30 ft below ground surface (middle half of wells: 28 ft–36 ft), from 9 measurements.

Drilled depth distribution

0–50 ft 21 50–100 ft 19 100–150 ft 7 150–200 ft 7 200–300 ft 8 300–400 ft 0 400–600 ft 2 600+ ft 0
Looking at a specific property in Castro Valley (94546)?

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Part of Alameda 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.