⟁ California Well Data field records · 2026 survey

California Well Data › Sonoma County › Santa Rosa (95405)

Santa Rosa, CA (95405): well depth, water level & drilling cost

✓ 536 DWR records · Sonoma County

173 ftmedian well depth
95 ft–320 fttypical depth range
60 ftmedian static water level
25 gpmmedian yield (225 tests)

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How deep are wells in and around Santa Rosa (95405), California?

The median drilled well depth in and around Santa Rosa (95405) is 173 ft, based on 406 wells with recorded depths in the state DWR database. Half fall between 95 ft and 320 ft; 90% are shallower than 519 ft.

How much does it cost to drill a well in and around Santa Rosa (95405)?

Applying published per-foot rates to the local median depth of 173 ft: drilling and casing alone typically runs $4,325–$11,245; a complete system including pump, pressure tank, and hookup typically runs $10,380–$17,300. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Santa Rosa (95405)?

The median static water level is 60 ft below ground surface (middle half of wells: 24 ft–99 ft), from 217 measurements.

Drilled depth distribution

0–50 ft 35 50–100 ft 75 100–150 ft 53 150–200 ft 60 200–300 ft 69 300–400 ft 41 400–600 ft 45 600+ ft 28
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Part of Sonoma 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.