⟁ California Well Data field records · 2026 survey

California Well Data › Kern County › Onyx (93255)

Onyx, CA (93255): well depth, water level & drilling cost

✓ 120 DWR records · Kern County

220 ftmedian well depth
165 ft–340 fttypical depth range
64 ftmedian static water level
20 gpmmedian yield (77 tests)

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How deep are wells in and around Onyx (93255), California?

The median drilled well depth in and around Onyx (93255) is 220 ft, based on 93 wells with recorded depths in the state DWR database. Half fall between 165 ft and 340 ft; 90% are shallower than 451 ft.

How much does it cost to drill a well in and around Onyx (93255)?

Applying published per-foot rates to the local median depth of 220 ft: drilling and casing alone typically runs $5,500–$14,300; a complete system including pump, pressure tank, and hookup typically runs $13,200–$22,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Onyx (93255)?

The median static water level is 64 ft below ground surface (middle half of wells: 40 ft–100 ft), from 86 measurements.

Drilled depth distribution

0–50 ft 0 50–100 ft 1 100–150 ft 14 150–200 ft 19 200–300 ft 26 300–400 ft 19 400–600 ft 9 600+ ft 5
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Part of Kern 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.