California Well Data › Solano County

Solano County, California: well depth, water level & drilling cost

Name: Solano County, California water well statistics
Creator: California Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 8,701 DWR records · verified 2026-10-02

200 ftmedian well depth

100 ft–300 fttypical depth range

36 ftmedian static water level

60 gpmmedian yield (549 tests)

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How deep are wells in Solano County, California?

The median drilled well depth in Solano County is 200 ft, based on 6,451 wells with recorded depths in the state DWR database. Half of all wells fall between 100 ft and 300 ft; 90% are shallower than 430 ft. Wells drilled since 2016 have a median depth of 208 ft.

How much does it cost to drill a well in Solano County?

Applying published per-foot rates to the local median depth of 208 ft: drilling and casing alone typically runs $5,200–$13,520; a complete system including pump, pressure tank, and hookup typically runs $12,480–$20,800. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Solano County?

The median static water level is 36 ft below ground surface (middle half of wells: 15 ft–81 ft), from 707 measurements.

How much water do wells in Solano County produce?

The median tested yield is 60 gpm (middle half: 25 gpm–200 gpm), from 549 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 581 50–100 ft 843 100–150 ft 1,082 150–200 ft 703 200–300 ft 1,517 300–400 ft 865 400–600 ft 517 600+ ft 343

Who drills wells in Solano County?

Companies by number of wells completed in this county since 2016, per filed well completion reports (California Department of Water Resources).

Driller	Wells since 2016
GREGG DRILLING & TESTING INC	81
PARKS WATER RESOURCES	64
CASCADE DRILLING L P	59
SULLIVAN DRILLING INC	39
KVILHAUG DRILLING & PUMP INC	35
EATON DRILLING CO LLC	33
PARKS WATER RESOURCES LLC	28
CASCADE DRILLING LP	27

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Well records by ZIP code in Solano County

Median depth, water level, and yield for each ZIP code with recorded wells.

Dixon (95620) — 1,401 wells, median 210 ft
Vacaville (95696) — 1,393 wells, median 241 ft
Vacaville (95688) — 901 wells, median 165 ft
Elmira (95625) — 754 wells, median 140 ft
Fairfield (94534) — 564 wells, median 200 ft
Davis (95618) — 460 wells, median 293 ft
Vacaville (95687) — 305 wells, median 82 ft
Rio Vista (94571) — 268 wells, median 200 ft
Vallejo (94590) — 267 wells, median 24 ft
Fairfield (94533) — 261 wells, median 95 ft
Suisun City (94585) — 254 wells, median 100 ft
Birds Landing (94512) — 213 wells, median 200 ft
Vallejo (94591) — 207 wells, median 120 ft
Benicia (94510) — 192 wells, median 30 ft
Travis Afb (94535) — 183 wells, median 100 ft
Vallejo (94592) — 85 wells, median 405 ft

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). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.