⟁ California Well Data field records · 2026 survey

California Well Data › Los Angeles County › Diamond Bar (91765)

Diamond Bar, CA (91765): well depth, water level & drilling cost

✓ 82 DWR records · Los Angeles County

178 ftmedian well depth
120 ft–200 fttypical depth range
—median static water level
15 gpmmedian yield (12 tests)

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How deep are wells in and around Diamond Bar (91765), California?

The median drilled well depth in and around Diamond Bar (91765) is 178 ft, based on 56 wells with recorded depths in the state DWR database. Half fall between 120 ft and 200 ft; 90% are shallower than 424 ft.

How much does it cost to drill a well in and around Diamond Bar (91765)?

Applying published per-foot rates to the local median depth of 178 ft: drilling and casing alone typically runs $4,450–$11,570; a complete system including pump, pressure tank, and hookup typically runs $10,680–$17,800. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Diamond Bar (91765)?

Few static water level measurements are recorded for this area.

Drilled depth distribution

0–50 ft 8 50–100 ft 1 100–150 ft 11 150–200 ft 16 200–300 ft 11 300–400 ft 3 400–600 ft 5 600+ ft 1
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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.