California Well Data › Santa Clara County

Santa Clara County, California: well depth, water level & drilling cost

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

✓ 33,188 DWR records · verified 2026-10-02

80 ftmedian well depth

30 ft–240 fttypical depth range

43 ftmedian static water level

35 gpmmedian yield (2,597 tests)

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How deep are wells in Santa Clara County, California?

The median drilled well depth in Santa Clara County is 80 ft, based on 17,705 wells with recorded depths in the state DWR database. Half of all wells fall between 30 ft and 240 ft; 90% are shallower than 360 ft. Wells drilled since 2016 have a median depth of 49 ft.

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

Applying published per-foot rates to the local median depth of 49 ft: drilling and casing alone typically runs $1,225–$3,185; a complete system including pump, pressure tank, and hookup typically runs $2,940–$4,900. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Santa Clara County?

The median static water level is 43 ft below ground surface (middle half of wells: 20 ft–88 ft), from 4,172 measurements.

How much water do wells in Santa Clara County produce?

The median tested yield is 35 gpm (middle half: 10 gpm–150 gpm), from 2,597 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 7,099 50–100 ft 2,261 100–150 ft 1,221 150–200 ft 1,142 200–300 ft 2,932 300–400 ft 1,515 400–600 ft 1,104 600+ ft 431

Who drills wells in Santa Clara 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
GUARDINO WELL DRILLING INC	285
GOOD EARTHKEEPING ORGANIZATION INC	163
CASCADE DRILLING L P	151
MAIER & DOUGHERTY PUMP & SUPPLY INC	142
GREGG DRILLING & TESTING INC	136
T S A DRILLING INC DBA PENECORE DRILLING	129
GREGG DRILLING LLC	115
ENVIRONMENTAL CONTROL ASSOCIATES	114

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Well records by ZIP code in Santa Clara County

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

San Martin (95046) — 2,027 wells, median 208 ft
Morgan Hill (95037) — 1,234 wells, median 223 ft
Gilroy (95021) — 1,226 wells, median 250 ft
Gilroy (95020) — 1,064 wells, median 205 ft
Morgan Hill (95038) — 630 wells, median 210 ft
Los Altos (94022) — 499 wells, median 250 ft
Saratoga (95071) — 484 wells, median 250 ft
San Jose (95127) — 459 wells, median 148 ft
Milpitas (95035) — 452 wells, median 120 ft
Santa Clara (95051) — 430 wells, median 56 ft
Coyote (95013) — 385 wells, median 175 ft
Mountain View (94043) — 366 wells, median 30 ft
Holy City (95026) — 361 wells, median 240 ft
San Jose (95110) — 325 wells, median 33 ft
San Jose (95111) — 322 wells, median 57 ft
San Jose (95125) — 308 wells, median 60 ft
New Almaden (95042) — 301 wells, median 200 ft
Sunnyvale (94088) — 299 wells, median 56 ft
San Jose (95117) — 298 wells, median 67 ft
Los Gatos (95030) — 283 wells, median 207 ft
Cupertino (95015) — 280 wells, median 200 ft
Santa Clara (95053) — 268 wells, median 30 ft
San Jose (95148) — 262 wells, median 250 ft
San Jose (95152) — 254 wells, median 190 ft
Palo Alto (94306) — 235 wells, median 40 ft
Mountain View (94041) — 234 wells, median 49 ft
San Jose (95119) — 226 wells, median 91 ft
San Jose (95112) — 223 wells, median 12 ft
Stanford (94305) — 221 wells, median 46 ft
San Jose (95126) — 216 wells, median 30 ft
Alviso (95002) — 215 wells, median 20 ft
Los Altos (94023) — 212 wells, median 285 ft
San Jose (95122) — 210 wells, median 62 ft
Sunnyvale (94087) — 209 wells, median 120 ft
Milpitas (95036) — 209 wells, median 25 ft
San Jose (95134) — 207 wells, median 280 ft
San Jose (95132) — 198 wells, median 47 ft
Sunnyvale (94089) — 196 wells, median 25 ft
Palo Alto (94302) — 191 wells, median 280 ft
Los Gatos (95032) — 190 wells, median 225 ft
San Jose (95121) — 186 wells, median 80 ft
Santa Clara (95052) — 181 wells, median 28 ft
Santa Clara (95054) — 171 wells, median 25 ft
San Jose (95151) — 167 wells, median 30 ft
San Jose (95158) — 157 wells, median 52 ft
Los Altos (94024) — 156 wells, median 160 ft
Palo Alto (94301) — 152 wells, median 260 ft
San Jose (95130) — 147 wells, median 60 ft
Cupertino (95014) — 147 wells, median 65 ft
San Jose (95118) — 140 wells, median 50 ft
Santa Clara (95055) — 130 wells, median 10 ft
Saratoga (95070) — 129 wells, median 256 ft
San Jose (95160) — 126 wells, median 84 ft
San Jose (95150) — 126 wells, median 30 ft
San Jose (95193) — 120 wells, median 161 ft
San Jose (95133) — 117 wells, median 281 ft
Mount Hamilton (95140) — 116 wells, median 250 ft
San Jose (95116) — 115 wells, median 25 ft
San Jose (95154) — 114 wells, median 85 ft
San Jose (95136) — 109 wells, median 30 ft
Sunnyvale (94085) — 108 wells, median 44 ft
San Jose (95135) — 106 wells, median 203 ft
San Jose (95124) — 100 wells, median 70 ft
San Jose (95192) — 98 wells, median 117 ft
San Jose (95131) — 95 wells, median 170 ft
Campbell (95009) — 91 wells, median 100 ft
San Jose (95164) — 90 wells, median 127 ft
San Jose (95129) — 89 wells, median 205 ft
San Jose (95191) — 84 wells, median 69 ft
San Jose (95123) — 83 wells, median 24 ft
San Jose (95155) — 83 wells, median 135 ft
San Jose (95113) — 81 wells, median 40 ft
San Jose (95128) — 76 wells, median 100 ft
San Jose (95170) — 73 wells, median 110 ft
San Jose (95120) — 67 wells, median 165 ft
San Jose (95153) — 62 wells, median 91 ft
Campbell (95008) — 62 wells, median 63 ft
Santa Clara (95056) — 60 wells, median 25 ft
San Jose (95138) — 52 wells, median 227 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.