⟁ California Well Data field records · 2026 survey

California Well Data › Sonoma County › Santa Rosa (95403)

Santa Rosa, CA (95403): well depth, water level & drilling cost

✓ 1,243 DWR records · Sonoma County

168 ftmedian well depth
80 ft–310 fttypical depth range
42 ftmedian static water level
30 gpmmedian yield (677 tests)

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How deep are wells in and around Santa Rosa (95403), California?

The median drilled well depth in and around Santa Rosa (95403) is 168 ft, based on 933 wells with recorded depths in the state DWR database. Half fall between 80 ft and 310 ft; 90% are shallower than 489 ft.

How much does it cost to drill a well in and around Santa Rosa (95403)?

Applying published per-foot rates to the local median depth of 168 ft: drilling and casing alone typically runs $4,200–$10,920; a complete system including pump, pressure tank, and hookup typically runs $10,080–$16,800. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Santa Rosa (95403)?

The median static water level is 42 ft below ground surface (middle half of wells: 20 ft–120 ft), from 561 measurements.

Drilled depth distribution

0–50 ft 106 50–100 ft 185 100–150 ft 138 150–200 ft 92 200–300 ft 157 300–400 ft 95 400–600 ft 113 600+ ft 47
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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.