⟁ California Well Data field records · 2026 survey

California Well Data › Sonoma County › Santa Rosa (95409)

Santa Rosa, CA (95409): well depth, water level & drilling cost

✓ 967 DWR records · Sonoma County

252 ftmedian well depth
156 ft–366 fttypical depth range
50 ftmedian static water level
20 gpmmedian yield (583 tests)

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How deep are wells in and around Santa Rosa (95409), California?

The median drilled well depth in and around Santa Rosa (95409) is 252 ft, based on 751 wells with recorded depths in the state DWR database. Half fall between 156 ft and 366 ft; 90% are shallower than 520 ft.

How much does it cost to drill a well in and around Santa Rosa (95409)?

Applying published per-foot rates to the local median depth of 252 ft: drilling and casing alone typically runs $6,300–$16,380; a complete system including pump, pressure tank, and hookup typically runs $15,120–$25,200. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Santa Rosa (95409)?

The median static water level is 50 ft below ground surface (middle half of wells: 25 ft–100 ft), from 479 measurements.

Drilled depth distribution

0–50 ft 5 50–100 ft 72 100–150 ft 97 150–200 ft 75 200–300 ft 207 300–400 ft 139 400–600 ft 100 600+ ft 56
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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.