⟁ California Well Data field records · 2026 survey

California Well Data › San Luis Obispo County › Arroyo Grande (93421)

Arroyo Grande, CA (93421): well depth, water level & drilling cost

✓ 1,017 DWR records · San Luis Obispo County

290 ftmedian well depth
140 ft–400 fttypical depth range
70 ftmedian static water level
40 gpmmedian yield (117 tests)

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How deep are wells in and around Arroyo Grande (93421), California?

The median drilled well depth in and around Arroyo Grande (93421) is 290 ft, based on 138 wells with recorded depths in the state DWR database. Half fall between 140 ft and 400 ft; 90% are shallower than 520 ft.

How much does it cost to drill a well in and around Arroyo Grande (93421)?

Applying published per-foot rates to the local median depth of 290 ft: drilling and casing alone typically runs $7,250–$18,850; a complete system including pump, pressure tank, and hookup typically runs $17,400–$29,000. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in and around Arroyo Grande (93421)?

The median static water level is 70 ft below ground surface (middle half of wells: 38 ft–172 ft), from 125 measurements.

Drilled depth distribution

0–50 ft 2 50–100 ft 17 100–150 ft 18 150–200 ft 11 200–300 ft 22 300–400 ft 26 400–600 ft 32 600+ ft 10
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Part of San Luis Obispo 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.