NAICS 237110 · Water and Sewer Line and Related Structures Construction

Well drilling contractors in Napa, CA

5 licensed well drilling contractors · every license checked against the issuer's file

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35 listingsHow results are ordered
03

Hydros Agritech Inc

Napa, CA · (707) 337-5533

CA-CSLB 1129854 · A C57 +1General engineering contractorWell drilling contractorSpecialty contractor
License activechecked Oct 24, 2026
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06

Doshier-Gregson Inc

American Canyon, CA · (707) 226-9698

CA-CSLB 258826 · C57 D21Well drilling contractorSpecialty contractor
License activechecked Oct 24, 2026
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08

Cuesta Geo Inc

Fairfield, CA · (925) 337-5546

CA-CSLB 1043431 · B C10 +1General contractorElectricianWell drilling contractor
License activechecked Oct 24, 2026
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11

Clearwater Group

Point Richmond, CA · (510) 307-9943

CA-CSLB 799370 · A ASB +3General engineering contractorAsbestos and hazardous materials abatementGeneral contractor+1
License activechecked Oct 24, 2026
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12

Conetec Inc

Richmond, CA · (510) 357-3677

CA-CSLB 1049248 · C57Well drilling contractor
License activechecked Oct 24, 2026
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13

Koenig Drilling

Cotati, CA · (707) 888-9617

CA-CSLB 1038648 · C57Well drilling contractor
License activechecked Oct 24, 2026
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14

Koenig Justin

Cotati, CA · (707) 888-9617

CA-CSLB 995277 · C57Well drilling contractor
License activechecked Oct 24, 2026
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15

Kvilhaug Drilling & Pump Inc

Winters, CA · (707) 372-8588

CA-CSLB 482390 · A C57 +1General engineering contractorWell drilling contractorSpecialty contractor
License activechecked Oct 24, 2026
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17

R W R Construction Inc

San Rafael, CA · (415) 457-5658

CA-CSLB 527433 · A B +1General engineering contractorGeneral contractorWell drilling contractor
License activechecked Oct 24, 2026
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19

Anthony Joseph Adiego

Petaluma, CA · (707) 975-4083

CA-CSLB 1130270 · C10 C38 +1ElectricianHeating and air conditioningWell drilling contractor
License activechecked Oct 24, 2026
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20

Benevent Building

Concord, CA · (925) 595-5338

CA-CSLB 798269 · A B +1General engineering contractorGeneral contractorWell drilling contractor
License activechecked Oct 24, 2026
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