⟁ California Well Data field records · 2026 survey

California Well Data › Los Angeles County › San Marino (91108)

San Marino, CA (91108): well depth, water level & drilling cost

✓ 51 DWR records · Los Angeles County

485 ftmedian well depth
300 ft–734 fttypical depth range
303 ftmedian static water level
1,463 gpmmedian yield (4 tests)

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How deep are wells in and around San Marino (91108), California?

The median drilled well depth in and around San Marino (91108) is 485 ft, based on 33 wells with recorded depths in the state DWR database. Half fall between 300 ft and 734 ft; 90% are shallower than 910 ft.

How much does it cost to drill a well in and around San Marino (91108)?

Applying published per-foot rates to the local median depth of 485 ft: drilling and casing alone typically runs $12,125–$31,525; a complete system including pump, pressure tank, and hookup typically runs $29,100–$48,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around San Marino (91108)?

The median static water level is 303 ft below ground surface (middle half of wells: 247 ft–346 ft), from 4 measurements.

Drilled depth distribution

0–50 ft 0 50–100 ft 0 100–150 ft 1 150–200 ft 2 200–300 ft 5 300–400 ft 4 400–600 ft 9 600+ ft 12
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Part of Los Angeles 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.