⟁ California Well Data field records · 2026 survey

California Well Data › Sonoma County › Petaluma (94954)

Petaluma, CA (94954): well depth, water level & drilling cost

✓ 308 DWR records · Sonoma County

300 ftmedian well depth
177 ft–422 fttypical depth range
50 ftmedian static water level
30 gpmmedian yield (122 tests)

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How deep are wells in and around Petaluma (94954), California?

The median drilled well depth in and around Petaluma (94954) is 300 ft, based on 200 wells with recorded depths in the state DWR database. Half fall between 177 ft and 422 ft; 90% are shallower than 529 ft.

How much does it cost to drill a well in and around Petaluma (94954)?

Applying published per-foot rates to the local median depth of 300 ft: drilling and casing alone typically runs $7,500–$19,500; a complete system including pump, pressure tank, and hookup typically runs $18,000–$30,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Petaluma (94954)?

The median static water level is 50 ft below ground surface (middle half of wells: 26 ft–80 ft), from 111 measurements.

Drilled depth distribution

0–50 ft 13 50–100 ft 16 100–150 ft 13 150–200 ft 16 200–300 ft 40 300–400 ft 41 400–600 ft 46 600+ ft 15
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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.