⟁ California Well Data field records · 2026 survey

California Well Data › Napa County › Angwin (94508)

Angwin, CA (94508): well depth, water level & drilling cost

✓ 260 DWR records · Napa County

400 ftmedian well depth
299 ft–521 fttypical depth range
124 ftmedian static water level
50 gpmmedian yield (157 tests)

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How deep are wells in and around Angwin (94508), California?

The median drilled well depth in and around Angwin (94508) is 400 ft, based on 220 wells with recorded depths in the state DWR database. Half fall between 299 ft and 521 ft; 90% are shallower than 700 ft.

How much does it cost to drill a well in and around Angwin (94508)?

Applying published per-foot rates to the local median depth of 400 ft: drilling and casing alone typically runs $10,000–$26,000; a complete system including pump, pressure tank, and hookup typically runs $24,000–$40,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Angwin (94508)?

The median static water level is 124 ft below ground surface (middle half of wells: 80 ft–194 ft), from 165 measurements.

Drilled depth distribution

0–50 ft 0 50–100 ft 2 100–150 ft 5 150–200 ft 7 200–300 ft 41 300–400 ft 44 400–600 ft 78 600+ ft 43
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Part of Napa 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.