California Well Data › San Joaquin County
San Joaquin County, California: well depth, water level & drilling cost
✓ 21,734 DWR records · verified 2026-10-02
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How deep are wells in San Joaquin County, California?
The median drilled well depth in San Joaquin County is 235 ft, based on 16,786 wells with recorded depths in the state DWR database. Half of all wells fall between 160 ft and 302 ft; 90% are shallower than 420 ft. Wells drilled since 2016 have a median depth of 300 ft.
How much does it cost to drill a well in San Joaquin County?
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 San Joaquin County?
The median static water level is 66 ft below ground surface (middle half of wells: 32 ft–100 ft), from 4,782 measurements.
How much water do wells in San Joaquin County produce?
The median tested yield is 200 gpm (middle half: 100 gpm–1,200 gpm), from 1,165 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in San Joaquin County?
Companies by number of wells completed in this county since 2016, per filed well completion reports (California Department of Water Resources).
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Well records by ZIP code in San Joaquin County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Escalon (95320) — 1,910 wells, median 230 ft
- Ripon (95366) — 1,087 wells, median 215 ft
- Stockton (95212) — 1,076 wells, median 254 ft
- Tracy (95304) — 986 wells, median 190 ft
- Stockton (95215) — 947 wells, median 265 ft
- Acampo (95220) — 847 wells, median 265 ft
- Farmington (95230) — 838 wells, median 305 ft
- Linden (95236) — 776 wells, median 330 ft
- Manteca (95337) — 682 wells, median 190 ft
- Lathrop (95330) — 677 wells, median 150 ft
- Victor (95253) — 675 wells, median 275 ft
- Manteca (95336) — 673 wells, median 200 ft
- Lodi (95242) — 662 wells, median 147 ft
- Tracy (95376) — 648 wells, median 190 ft
- Stockton (95205) — 607 wells, median 206 ft
- Vernalis (95385) — 584 wells, median 240 ft
- French Camp (95231) — 494 wells, median 170 ft
- Tracy (95378) — 491 wells, median 250 ft
- Lodi (95240) — 482 wells, median 245 ft
- Tracy (95391) — 480 wells, median 200 ft
- Lockeford (95237) — 423 wells, median 305 ft
- Clements (95227) — 382 wells, median 337 ft
- Woodbridge (95258) — 365 wells, median 220 ft
- Stockton (95213) — 316 wells, median 235 ft
- Stockton (95203) — 314 wells, median 25 ft
- Stockton (95201) — 291 wells, median 56 ft
- Stockton (95206) — 276 wells, median 55 ft
- Thornton (95686) — 223 wells, median 150 ft
- Stockton (95214) — 217 wells, median 210 ft
- Stockton (95296) — 208 wells, median 41 ft
- Stockton (95209) — 197 wells, median 190 ft
- Stockton (95202) — 168 wells, median 75 ft
- Lodi (95241) — 160 wells, median 260 ft
- Stockton (95297) — 158 wells, median 160 ft
- Stockton (95204) — 148 wells, median 125 ft
- Stockton (95219) — 148 wells, median 95 ft
- Stockton (95269) — 146 wells, median 181 ft
- Stockton (95208) — 134 wells, median 90 ft
- Stockton (95211) — 128 wells, median 197 ft
- Stockton (95210) — 84 wells, median 355 ft
- Holt (95234) — 67 wells, median 70 ft
- Stockton (95267) — 51 wells, median 120 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.