⟁ California Well Data field records · 2026 survey

California Well Data › San Diego County › San Marcos (92079)

San Marcos, CA (92079): well depth, water level & drilling cost

✓ 141 DWR records · San Diego County

300 ftmedian well depth
171 ft–615 fttypical depth range
33 ftmedian static water level
60 gpmmedian yield (83 tests)

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How deep are wells in and around San Marcos (92079), California?

The median drilled well depth in and around San Marcos (92079) is 300 ft, based on 98 wells with recorded depths in the state DWR database. Half fall between 171 ft and 615 ft; 90% are shallower than 847 ft.

How much does it cost to drill a well in and around San Marcos (92079)?

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 San Marcos (92079)?

The median static water level is 33 ft below ground surface (middle half of wells: 24 ft–57 ft), from 62 measurements.

Drilled depth distribution

0–50 ft 4 50–100 ft 4 100–150 ft 11 150–200 ft 11 200–300 ft 16 300–400 ft 5 400–600 ft 18 600+ ft 29
Looking at a specific property in San Marcos (92079)?

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Part of San Diego 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.