WellsNear Water Test Reminder

Well pump repair and water testing in California

From the Contractors State License Board (California) list of licensed water well drillers and pump installers, read October 10, 2026. We show the license classes the state gives each one.

648 licensed for well pump work
267 listed here, each matched to an open Google profile
648 with a drilling class

Well pump businesses licensed in California

Businesses with a license on the California list, ranked by our quality score: a state license, a phone on the list, a matching open Google profile, a website and the number of licensed people. Nobody can pay to move up.

Kings River Drilling LLC

90/100
✓ CA Licensed C-57 Well Drilling Contractor on record #1001797 ★ 5 (270 reviews) Well Pump RepairPump InstallationWater Well Drilling

1650 S Rainbow Route, Sanger, CA 93657

Call (559) 875-6699 Details Website
Verified Oct 2026 · Unclaimed listing

North American Drilling Co

90/100
✓ CA Licensed C-57 Well Drilling Contractor on record #934991 ★ 4.9 (124 reviews) Well Pump RepairPump InstallationWater Well Drilling

4450 Old Woman Springs Rd, Yucca Valley, CA 92284

Call (760) 365-5971 Details Website
Verified Oct 2026 · Unclaimed listing

Shasta Drilling INC

90/100
✓ CA Licensed C-57 Well Drilling Contractor on record #895374 ★ 4.9 (76 reviews) Well Pump RepairPump InstallationWater Well Drilling

16602 Vladimir Ct, Redding, CA 96001

Call (530) 229-9120 Details Website
Verified Oct 2026 · Unclaimed listing

Clear Drain Plumbing

90/100
✓ CA Licensed C-57 Well Drilling Contractor on record #833802 ★ 4.8 (55 reviews) Well Pump RepairPump InstallationWater Well Drilling

16111 Los Gatos Blvd Unit B, Los Gatos, CA 95032

Call (408) 358-3242 Details Website
Verified Oct 2026 · Unclaimed listing

Towns with licensed well businesses

All 267 well pump businesses in California, by town

Acampo: Shoup Walter H Well Drilling & Pumps, Valley Drilling Co

Adelanto: Daugherty Pump & Drilling

Adin: Conners Well Drilling

Alpine: East County Pump Services

Altaville: Tanko Well Drilling

Alturas: Conners Well Drilling, Heard Plumbing INC

American Canyon: Doshier-gregson INC

Anaheim: Millennium Environmental INC

Anderson: Watson Well INC

Anza: Southern California Well Service LLC

Apple Valley: Independent Well Drilling & Pump Service

Aptos: Cenozoic Exploration INC

Armona: Valley Pump & Dairy Systems INC

Arroyo Grande: Mello & Sons Pumps & Motors

Atascadero: Filipponi-thompson Drilling INC

Auburn: Diamond Well Drilling Company INC, Tanko Gary C Well Drilling INC

Bakersfield: C J Logan Pump & Electric INC, Camp S A Pump Company, Driltek INC, Precision Well Service LLC, South Valley Tech Services, Titan Well Services, Williford Donald A of California

Beaumont: Well Tec Services INC

Bothell: Cascade Drilling LP

Buellton: Alexander Pump Service INC

Calimesa: California Pacific Drilling

Cameron Park: Rumsey / Lang Well Drilling & Pumps INC

Capitola: Capitola Pump Company INC

Carmichael: Cal Sierra Construction INC

Chico: Besser Tim Well Drilling, Commercial Pump & Mechanical INC, Earl's Performance Plumbing, Heitman W S Drilling, Keller Drilling and Pump, North State Drilling

Chino: 2 R Drilling INC

Chino Hills: Wbe Drilling INC

Chowchilla: Anderson Pump Company, Drew & Hefner Well Drilling

City of Atwater: Quality Well Drillers INC

Clark Fork: Ruen Drilling INC

Clarksburg: Seebeck M E

Coachella: Southwest Pump & Drilling INC

Coarsegold: Sierra Nevada Drilling INC

Colton: Best Drilling and Pump INC

Cotati: Koenig Drilling

Cottonwood: Grade Drilling INC

Creston: Hartzell Horizontal Drilling INC

Danville: Advanced Water Well Drilling & Pump Services

Del Rey: Bradley & Sons INC

Dinuba: Belknap Pump Company INC, Belknap Scott Well Drilling INC

Dos Palos: Dos Palos Well Drilling

Downey: Farwest Corrosion Control Company

East Palo Alto: Pitcher Services LLC

Edgewood: Holt Drilling Services

Elverta: Goodell Well & Pump Service

Escondido: Baja Exploration, Curtis Drilling Co, Daisy Drilling

Exeter: Barba Drilling, Mountain West Water Well Services LLC, Willitts Equipment & Engineering Co INC

Fillmore: Murphy Thomas Pump & Well

Fontana: Great West Drilling INC

Fort Bragg: Coastal Well Cleaning, Superior Pump & Drilling INC

Fowler: Crisp Well Drilling, H & B Drilling and Sons LLC

Fresno: Asbury Well Drilling & Pumps, Bakersfield Well & Pump Co, HP Water Systems INC

Galt: Liebig Bob and Sons Pump Service

Garden Grove: Martini Drilling Corp

Gilroy: Chappell Pump & Supply

Granite Bay: Viking Drillers INC

Grass Valley: Peters Drilling and Pump Service INC

Hanford: Grabow Well Drilling INC, Haynes Well Drilling, King Pump and Well INC

Hidden Valley Lake: Cal Tech Pump Well & Compressor INC

Hornbrook: A & M Well Drilling INC

Hydesville: Fisch Drilling and Pump INC

Indio: Palm Springs Pump INC

Jamul: Manos Jim Drilling & Pump

Janesville: Your H20 Pro

Kerman: CR Industries, DL Well Drilling

La Habra: Socal Drilling Co

Lake Hughes: Vics Well Drilling INC

Lakeside: Western Foundations & Shoring INC

Laton: B & B Well Drilling Incorporated

Laytonville: Morrison J W INC

Lemoore: Longmire Swaging INC

Leona Valley: Abundant Water Wells INC

Lincoln: Terrier Pump and Water Quality

Linden: Purviance Drillers INC

Littlerock: Lundigan Drilling

Los Gatos: Clear Drain Plumbing

Lucerne Valley: Bar - H Well Drilling INC, Taylor Pump And Well Company

Madera: Bapu Well and Pump, Horner & Sons INC, Kechichian Well Drilling, Madera Pumps INC, Valley Well Drilling LP, Water Resource Heritage INC

Mariposa: Yosemite Falls INC

McClellan Park: Jarrett Foundations LLC

McKinleyville: Rich Well Drilling & Pump Service INC

Merced: Living Water Well Drilling

Modesto: Hennings Bros Drilling Co INC, Howk Systems, Masellis Drilling INC

Morgan Hill: Guardino Well Drilling INC

Morro Bay: Carlson Bryer Drilling Contractor

Murrieta: Schroeder Cary Contracting INC

Napa: Huckfeldt Well Drilling INC, MC Lean & Williams INC, Oakville Pump Service INC, West Coast Well and Pump

Newberry Springs: Eagle Well Drilling & Pump Service

Newcastle: American Well Drilling and Pump Service

Nipomo: Enloe Well Drilling

Norco: 24 - 7 Water Well Drilling, Veteran Water Well Drilling

North Bend: Gregory Drilling Incorporated

North Highlands: Welco Underground Construction INC

Oakhurst: Walt Bannon Drilling INC

Oakland: Condon-johnson & Associates INC

Oceanside: North County Drilling LLC

Ojai: Hansen-welldo-service INC

Olivehurst: Superior Well Service INC

Orange: BC2 Environmental Well Drilling, Pump Systems Unlimited INC

Orland: Lely Pump, Sullivan Drilling INC

Oroville: Precision Pump Company, Wiegand's Water Well Drilling

Oxnard: Ike's Pump & Drilling INC

Pacoima: Choice Drilling INC

Parma: Riverside Well Drilling & Pumps

Paso Robles: Midstate Drillers, Pacific Coast Well Drilling INC, Pro-h20 Drilling and Pump Company

Pearblossom: Roadrunner Pump Service

Petaluma: Jerry and Don's Yager Pump and Well Service, Oasis Pump & Drilling

Pittsburg: Martell Water Systems INC

Quincy: Dickens Drilling

Ramona: Aspin Rick A Construction, Hydro - Tech Well Services INC, S D Drilling INC

Rancho Cordova: G S Exploration, Kirby's Pump & Mechanical INC

Raymond: Wellco Drilling INC

Red Bluff: Tri County Drilling and Pump

Redding: Shasta Drilling INC

Redlands: Layne Christensen Company

Reedley: Johnson Drilling Co, Logan Bros Pump and Ag INC

Rescue: Triangle Well Drilling

Richmond: Conetec INC

Ridgecrest: Berry's Water Well Service

Riverdale: Big River Drilling LLC

Riverside: Berchtold Waterwell and Pump Service

Rosamond: Grewe Bryant Pump Service

Sacramento: DR Well Water Well Services INC, Fox Loomis Incorporated, H1 Drilling Company

Salinas: Bbs Business Ventures LLC, Dougherty Pump & Drilling INC, Granite Drilling Company, Salinas Pump Company

San Andreas: Briski Well Drilling Co

San Bernardino: Tri County Pump Company

San Clemente: Peter Drilling & Contracting

San Diego: Pacific Drilling Co, Tri-county Drilling INC

San Dimas: General Pump Company INC

San Francisco: Malcolm Drilling Company INC

San Jacinto: L O Lynch Quality Wells & Pumps INC

San Jose: Exploration Geoservices INC

San Luis Obispo: Hather Robert Well Drilling

San Martin: Maier & Dougherty Pump & Supply INC

San Mateo: Access Soil Drilling INC

San Miguel: Aqua Engineering

San Rafael: R W R Construction INC

San Ramon: Pacific Coast Well & Pump INC

Sanger: A & S Pump Service, Kings River Drilling LLC

Santa Barbara: Cascade Well & Pump Co

Santa Cruz: Central Coast Drilling LLC, Earth Flow Drilling Company, Landino Drilling Co, Trinity Drilling INC

Santa Fe Springs: M R Drilling

Santa Maria: D & D Pumps, Fisher Pump and Well Service, Kenai Drilling Limited, M & W Pumps INC, Taylor Drilling and Pump INC

Santa Rosa: Clear Heart Drilling INC, Pacific Coast Drilling Company INC, Petersen - Gpm Well Testing and Water Treatment Services LLC, Petersen Les Drilling & Pump INC, Pumpman Norcal, Razo Drilling and Pump INC

Sebastopol: Fisch Bros Drilling, Weeks Drilling and Pump Co

Selma: 99 Drilling LLC, Anthony J Prieto Water Well Drilling INC

Shafter: Drill Hog, Farm Pump and Irrigation Company INC, Well Rehabilitation Services INC

Shasta Lake: Diamond Core Drilling INC

Shingletown: Sinclair Pump and Electric

Signal Hill: A B C Liovin Drilling INC, Gregg Drilling LLC, J E T Drilling INC

Sonoma: Larbre Well Drilling and Pumps INC

Sonora: Canepa and Sons INC, Tanko Bros Inc.

Spokane Valley: Crux Subsurface INC

Stockton: Moorman's Water Systems INC, Universal Pump & Supply INC

Susanville: Smith's Pumps INC

Temecula: Hydrocurrent Well Services LLC

Templeton: Mazzi Well Drilling, Miller Drilling Co

Terra Bella: BP Water Well Drilling, W P I Water Resources INC

Thermal: J C Well & Pump Systems INC, MC Keever Water Well & Pump Service INC

Tollhouse: Waters Drilling and Pump INC

Tulare: Lott Drilling INC, Soilprobe Drilling & Field Services

Turlock: Calwater Drilling Company INC, Don Pedro Pump LLC, Pump Pros INC

Twentynine Palms: Chambers D P Drilling

Upper Lake: Hutton Well Drilling

Valley Center: Brax Company INC, Fain Drilling & Pump Co INC

Visalia: Arsenal Well Drilling INC, Cal Gro Pump Service INC, Ingram Equipment Company INC, Loverin Pump & Drilling Co, Odell's Pump & Motor

Watsonville: Maggiora Bros Drilling INC

West Sacramento: Geocentric Drilling INC, Taber Drilling

Willits: Willits Pump Service

Wilton: Jensen Kelin Drilling, Nix Robert Allen Well Drilling

Winchester: Detray Drilling

Woodbridge: A & A Gross Drilling

Woodland: Eaton Drilling Co LLC, Roadrunner Drilling & Pump Company INC

Yuba City: Nor - Cal Pump & Well Drilling INC, Valley Pump & Motor Works INC

Yucca Valley: North American Drilling Co

Zamora: Parks Water Resources LLC

Testing your well water in California

We have not yet collected published test fees for California. Published fees in other states show what labs charge. Which tests fit your home.

What California's license list shows

  • 707 entries on the list, 59 of them based outside California.
  • 648 are based in California and hold a class a homeowner would hire: pump installation, water well drilling.
  • Most are based in Bakersfield (21), Madera (17), Fresno (12), Visalia (8), Yuba City (7), Paso Robles (7).

C-57 Well Drilling Contractor licenses (CSLB class definition, 16 CCR 832.57: a well drilling contractor installs and repairs water wells and pumps). Sole owners appear by town only. Source: List by Classification: C-57 Well Drilling Contractor, Contractors State License Board (California). Read October 10, 2026.

Licensed in California, by town

Names, license classes and phones as the state publishes them. A listing above means we also matched the business on Google.

TownName on the listLicense classesLicenseExpiresPhone
Bakersfield A - 1 Drilling & Pump INC C-57 Well Drilling Contractor 950761 Oct 2027 (559) 690-4747
Arjun Construction Company C-57 Well Drilling Contractor 978279 Jan 2027 (661) 817-0479
Buddy Ruff Construction INC C-57 Well Drilling Contractor 808378 May 2028 (661) 391-8584
C J Logan Pump & Electric INC C-57 Well Drilling Contractor 1008789 Nov 2027 (661) 398-1244
Camp S A Pump Company C-57 Well Drilling Contractor 346951 Jul 2028 (661) 399-2976
Drill Hog C-57 Well Drilling Contractor 1001767 Mar 2027 (661) 240-7386
Driltek INC C-57 Well Drilling Contractor 1002510 Mar 2027 (661) 327-3021
Dwight Sons C-57 Well Drilling Contractor 555118 Jan 2027 (661) 428-6976
Gungle Drilling C-57 Well Drilling Contractor 542006 Sep 2028 (661) 747-9713
Key Energy Services LLC C-57 Well Drilling Contractor 985352 Jul 2027 (661) 334-8252
Petro - Lud INC C-57 Well Drilling Contractor 997775 Oct 2028 (661) 747-4779
Precision Well Service LLC C-57 Well Drilling Contractor 1043985 Sep 2028 (661) 809-1549
Rival Well Services Incorporated C-57 Well Drilling Contractor 901260 Jul 2027 (661) 392-1700
Soils Engineering INC C-57 Well Drilling Contractor 253192 Aug 2027 (661) 831-5100
South Valley Pump & Drilling C-57 Well Drilling Contractor 410385 Feb 2027 (661) 831-5703
South Valley Tech Services C-57 Well Drilling Contractor 1045485 Oct 2026 (661) 831-5703
Terraserve INC C-57 Well Drilling Contractor 1057769 Sep 2027 (661) 378-8058
Titan Well Services C-57 Well Drilling Contractor 1028748 Jul 2027 (661) 589-3055
United Wells Services California 1 INC C-57 Well Drilling Contractor 1000753 Feb 2027 (661) 392-8000
Well Rehabilitation Services INC C-57 Well Drilling Contractor 983846 May 2027 (661) 587-0914
Yama Sustainable Solutions INC C-57 Well Drilling Contractor 1142421 Aug 2027 (661) 421-2068
Madera Bapu Well and Pump C-57 Well Drilling Contractor 1153827 Apr 2028 (559) 661-1556
Blue Angell Electric C-57 Well Drilling Contractor 1101065 Feb 2027 (559) 718-3898
D R Drilling C-57 Well Drilling Contractor 998778 Nov 2026 (559) 232-2520
Fimbrez Water Well Drilling C-57 Well Drilling Contractor 1090625 Apr 2028 (559) 232-3654
Hch Water Wells INC C-57 Well Drilling Contractor 1115299 Jan 2028 (559) 260-3762
Hefner's INC C-57 Well Drilling Contractor 1029822 May 2027 (559) 706-0011
Horner & Sons INC C-57 Well Drilling Contractor 707458 Jul 2027 (559) 674-3766
Jerry Thomas Cook JR C-57 Well Drilling Contractor 1161714 Sep 2028 (559) 481-3612
Kechichian Well Drilling C-57 Well Drilling Contractor 755920 Dec 2026 (559) 871-4002
MP Well Drilling & Pump Service C-57 Well Drilling Contractor 1137520 May 2027 (559) 831-1945
Madera Pumps INC C-57 Well Drilling Contractor 350177 May 2027 (559) 674-0096
Oasis F G Drilling C-57 Well Drilling Contractor 1050808 Mar 2027 (559) 232-5058
Parra Well Drilling C-57 Well Drilling Contractor 1130040 Dec 2026 (559) 716-2869
Silva Well Drilling INC C-57 Well Drilling Contractor 1030191 Aug 2027 (559) 285-1266
Valley Well Drilling LP C-57 Well Drilling Contractor 1099927 Dec 2026 (559) 674-9999
Veteran Drilling & Pump C-57 Well Drilling Contractor 1160425 Sep 2028 (559) 479-6771
Water Resource Heritage INC C-57 Well Drilling Contractor 1013788 May 2028 (209) 327-3086
Fresno Asbury Well Drilling & Pumps C-57 Well Drilling Contractor 1005978 Jul 2027 (559) 288-7964
Bakersfield Well & Pump Co C-57 Well Drilling Contractor 440537 Jun 2027 (559) 834-1551
Bsk Associates C-57 Well Drilling Contractor 490942 Dec 2027 (559) 497-2880
HP Water Systems INC C-57 Well Drilling Contractor 701818 Mar 2027 (559) 268-4751
Katch General C-57 Well Drilling Contractor 1158578 Jul 2028 (559) 292-6653
Katch General and Katch C-57 Well Drilling Contractor 933096 Nov 2027 (559) 260-2992
Kechichian Joseph Viken C-57 Well Drilling Contractor 1069302 Sep 2028 (559) 706-6565
Kroeker INC C-57 Well Drilling Contractor 621866 Jun 2027 (559) 237-3764
Moore Twining Associates INC C-57 Well Drilling Contractor 506159 Feb 2027 (559) 268-7021
Salem Well Drilling C-57 Well Drilling Contractor 970772 Mar 2028 (559) 271-9700
Swage Kings INC C-57 Well Drilling Contractor 1003102 Apr 2027 (559) 500-1981
Technicon Engineering Services INC C-57 Well Drilling Contractor 767888 Aug 2027 (559) 276-9311
Visalia Arsenal Well Drilling INC C-57 Well Drilling Contractor 1017985 Sep 2027 (661) 390-1662
Cal Gro Pump Service INC C-57 Well Drilling Contractor 867650 Nov 2027 (559) 651-0802
Crown Drilling Services INC C-57 Well Drilling Contractor 1010983 Oct 2026 (559) 972-1494
Ingram Equipment Company INC C-57 Well Drilling Contractor 401540 Mar 2027 (559) 734-3362
Loverin Pump & Drilling Co C-57 Well Drilling Contractor 331104 Apr 2027 (559) 561-9800
Odell's Pump & Motor C-57 Well Drilling Contractor 826935 Oct 2027 (559) 747-0755
Pacific West Services C-57 Well Drilling Contractor 834788 May 2027 (559) 909-3006
Soilprobe Drilling & Field Services C-57 Well Drilling Contractor 1054662 Jun 2027 (559) 804-9179
Paso Robles Apex Pump and Well Services C-57 Well Drilling Contractor 1115729 Jan 2028 (805) 835-9331
Case Pacific Company C-57 Well Drilling Contractor 259827 Mar 2028 (805) 237-8851
Hank's Welding Service C-57 Well Drilling Contractor 831367 Jan 2028 (805) 238-2404
Lyles Water Well Drilling C-57 Well Drilling Contractor 1057892 Feb 2027 (805) 975-3799
Midstate Drillers C-57 Well Drilling Contractor 999944 Mar 2028 (907) 242-9066
Pro-h20 Drilling and Pump Company C-57 Well Drilling Contractor 767541 Aug 2027 (805) 674-8674
Sierra Exploration Drilling Co INC C-57 Well Drilling Contractor 327073 Jan 2028 (805) 238-3396
Santa Rosa Clear Heart Drilling INC C-57 Well Drilling Contractor 780357 Jun 2028 (707) 484-1506
Pacific Coast Drilling Company INC C-57 Well Drilling Contractor 539855 Aug 2028 (707) 778-8316
Petersen - Gpm Well Testing and Water Treatment Services LLC C-57 Well Drilling Contractor 985445 Jul 2027 (707) 823-4102
Petersen Les Drilling & Pump INC C-57 Well Drilling Contractor 261084 Dec 2026 (707) 545-0246
Pumpman Norcal C-57 Well Drilling Contractor 1033562 Dec 2027 (707) 584-9191
Razo Drilling and Pump INC C-57 Well Drilling Contractor 1122070 Jun 2028 (707) 280-4958
Stapleton Brett Austin C-57 Well Drilling Contractor 1048719 Jan 2027 (707) 228-7981
Yuba City A - 1 Drilling & Pump Service INC C-57 Well Drilling Contractor 972935 Sep 2027 (530) 632-4373
Dna Well Drilling LLC C-57 Well Drilling Contractor 1108209 Aug 2027 (530) 740-3731
Fulkerson Pump Services C-57 Well Drilling Contractor 240590 Nov 2026 (530) 673-0874
Heer Nar S C-57 Well Drilling Contractor 635290 Jan 2028 (530) 682-6800
Nor - Cal Pump & Well Drilling INC C-57 Well Drilling Contractor 908591 Jan 2028 (530) 674-5861
Nor Cal Well Service C-57 Well Drilling Contractor 1118833 Apr 2028 (530) 682-9999
Valley Pump & Motor Works INC C-57 Well Drilling Contractor 256384 Apr 2027 (530) 673-2930
Chico Besser Tim Well Drilling C-57 Well Drilling Contractor 598765 Jul 2028 (530) 343-0924
Commercial Pump & Mechanical INC C-57 Well Drilling Contractor 921066 Mar 2027 (530) 899-1583
Earl's Performance Plumbing C-57 Well Drilling Contractor 772565 Dec 2027 (530) 343-0330
Heitman W S Drilling C-57 Well Drilling Contractor 386577 Dec 2027 (530) 898-1950
Keller Drilling and Pump C-57 Well Drilling Contractor 1038857 May 2028 (530) 521-2968
North State Drilling C-57 Well Drilling Contractor 812678 Jul 2027 (530) 891-5545
Chowchilla Anderson Pump Company C-57 Well Drilling Contractor 262280 Aug 2028 (559) 665-4477
Drew & Hefner Well Drilling C-57 Well Drilling Contractor 1003754 May 2027 (559) 645-2483
Eden Pumps C-57 Well Drilling Contractor 1158362 Jul 2028 (559) 517-0715
Medeiros Well Drilling C-57 Well Drilling Contractor 662856 Jan 2027 (559) 284-9779
Precision Well Drilling INC C-57 Well Drilling Contractor 998923 Dec 2026 (559) 223-4023
R and W Well Drilling and Pump C-57 Well Drilling Contractor 1005633 Jul 2027 (559) 655-2400
Napa Bess D Pump & Well Elect C-57 Well Drilling Contractor 487027 Feb 2028 (707) 337-3851
Huckfeldt Well Drilling INC C-57 Well Drilling Contractor 439746 Jul 2027 (707) 255-7923
Hydros Agritech INC C-57 Well Drilling Contractor 1129854 Dec 2026 (707) 337-5533
MC Lean & Williams INC C-57 Well Drilling Contractor 396352 Dec 2026 (707) 255-6450
Oakville Pump Service INC C-57 Well Drilling Contractor 744958 Jan 2028 (707) 944-2471
West Coast Well and Pump C-57 Well Drilling Contractor 1089677 Apr 2028 (707) 815-3288
Sacramento Boremasters LLC C-57 Well Drilling Contractor 1138272 Jun 2027 (916) 455-4225
Fox Loomis Incorporated C-57 Well Drilling Contractor 372314 Sep 2027 (916) 383-2140
H1 Drilling Company C-57 Well Drilling Contractor 1006095 Aug 2027 (916) 213-7231
Hedman Well Services INC C-57 Well Drilling Contractor 1096857 Sep 2028 (916) 383-3636
R A H Environmental INC C-57 Well Drilling Contractor 592216 Apr 2028 (916) 563-7770
Teichert Construction C-57 Well Drilling Contractor 8 Apr 2027 (916) 484-3347
Salinas Agee Electric INC C-57 Well Drilling Contractor 538500 Feb 2027 (831) 595-7423
Bbs Business Ventures LLC C-57 Well Drilling Contractor 1106386 Jun 2027 (831) 424-8300
Dougherty Pump & Drilling INC C-57 Well Drilling Contractor 267768 Dec 2027 (831) 663-3562
Granite Drilling Company C-57 Well Drilling Contractor 279262 Apr 2028 (831) 751-6300
Robinett Water Well Drilling and Pump Service C-57 Well Drilling Contractor 964078 Jan 2028 (831) 682-2699
Salinas Pump Company C-57 Well Drilling Contractor 515945 Aug 2027 (831) 422-4522
San Jose Blaine Tech Services INC C-57 Well Drilling Contractor 746684 Mar 2028 (408) 573-0555
Dirtmarket LLC C-57 Well Drilling Contractor 1052786 Apr 2027 (408) 262-1418
Environmental Testing C-57 Well Drilling Contractor 716002 Dec 2027 (408) 712-9452
Exploration Geoservices INC C-57 Well Drilling Contractor 484288 Dec 2027 (408) 280-6822
Ge Engineering Contractor C-57 Well Drilling Contractor 1049882 Feb 2027 (408) 297-1500
Welltest INC C-57 Well Drilling Contractor 1100880 Jan 2027 (408) 460-1884
Santa Cruz All Earth Geotechnical Engineering INC C-57 Well Drilling Contractor 1116390 Feb 2028 (831) 345-8852
California Geotech C-57 Well Drilling Contractor 812382 Sep 2028 (831) 634-1964
Central Coast Drilling LLC C-57 Well Drilling Contractor 979745 Oct 2027 (831) 345-7062
Earth Flow Drilling Company C-57 Well Drilling Contractor 800269 Mar 2028 (831) 423-3288
Trinity Drilling INC C-57 Well Drilling Contractor 1010926 Feb 2028 (831) 426-5607
Trinity Source Group INC C-57 Well Drilling Contractor 913467 Apr 2028 (831) 426-5600
Selma 99 Drilling LLC C-57 Well Drilling Contractor 1009544 Dec 2027 (559) 896-9595
Anthony J Prieto Water Well Drilling INC C-57 Well Drilling Contractor 931959 Apr 2027 (559) 896-4879
Prieto Anthony J C-57 Well Drilling Contractor 425883 Aug 2028 (559) 896-4879
Raisin Four INC C-57 Well Drilling Contractor 1162223 Sep 2028 (559) 351-0501
Singh Gurtej C-57 Well Drilling Contractor 1005593 Jul 2027 (559) 541-9577
Vasquez Markos Elias C-57 Well Drilling Contractor 1035045 Jan 2028 (559) 666-7662
Escondido All American Drilling and Pump Service LLC C-57 Well Drilling Contractor 999009 Aug 2027 (760) 470-1655
Baja Exploration C-57 Well Drilling Contractor 804318 Feb 2028 (760) 743-7678
Curtis Drilling Co C-57 Well Drilling Contractor 624663 Aug 2027 (760) 727-7330
Daisy Drilling C-57 Well Drilling Contractor 874005 Mar 2028 (760) 802-4407
MC Dannald Systems INC C-57 Well Drilling Contractor 767862 Aug 2027 (760) 741-5555
Exeter Barba Drilling C-57 Well Drilling Contractor 1008524 Oct 2027 (559) 737-1442
Davis Water Well INC C-57 Well Drilling Contractor 1015118 Jun 2028 (559) 972-1494
J&o Well Drilling INC C-57 Well Drilling Contractor 1062907 Jan 2028 (406) 599-8544
Mountain West Water Well Services LLC C-57 Well Drilling Contractor 1011524 Feb 2027 (559) 798-6575
Willitts Equipment & Engineering Co INC C-57 Well Drilling Contractor 675312 Apr 2028 (559) 594-5020
Lucerne Valley Bar - H Well Drilling INC C-57 Well Drilling Contractor 1009104 Nov 2027 (760) 912-5075
Pettigrew Well Drilling & Pump Repair C-57 Well Drilling Contractor 1045746 Oct 2026 (442) 242-2912
Post Charles C-57 Well Drilling Contractor 941418 Dec 2027 (760) 247-9882
Solomon Well Drilling & Pump Service INC C-57 Well Drilling Contractor 954106 Nov 2026 (760) 248-7916
Taylor Robert L C-57 Well Drilling Contractor 858712 May 2027 (760) 810-6894
Oroville E N W O P LLC C-57 Well Drilling Contractor 1081313 Sep 2027 (209) 221-3086
Enprobe INC C-57 Well Drilling Contractor 1012248 Mar 2028 (530) 693-0219
Precision Pump Company C-57 Well Drilling Contractor 862386 Aug 2027 (530) 533-4944
Westervelt Well Drilling C-57 Well Drilling Contractor 570082 Mar 2028 (530) 589-5990
Wiegand's Water Well Drilling C-57 Well Drilling Contractor 1104494 May 2027 (530) 990-3138
San Diego Geocon Consultants INC C-57 Well Drilling Contractor 716050 Dec 2027 (925) 371-5900
Kleinfelder INC C-57 Well Drilling Contractor 467252 Dec 2026 (619) 831-4600
Pacific Drilling Co C-57 Well Drilling Contractor 681380 Dec 2027 (619) 294-3682
Tri-county Drilling INC C-57 Well Drilling Contractor 547737 Nov 2026 (858) 271-0099
Vickery Jimmy O Well Drilling C-57 Well Drilling Contractor 682555 Aug 2028 (760) 620-6088
San Francisco Adept Construction Solutions INC C-57 Well Drilling Contractor 1011699 Mar 2028 (415) 602-2290
Aremtech INC C-57 Well Drilling Contractor 795570 May 2027 (415) 467-5409
Malcolm Drilling Company INC C-57 Well Drilling Contractor 259543 Jul 2028 (415) 901-4400
Malcolm/silverado A Joint Venture C-57 Well Drilling Contractor 1004080 Oct 2026 (415) 901-4400
Modern Technology Resources INC C-57 Well Drilling Contractor 965267 Sep 2027 (415) 602-2290
Santa Maria Acosta Well Drilling C-57 Well Drilling Contractor 1101319 Feb 2027 (805) 714-9407
D & D Pumps C-57 Well Drilling Contractor 998575 Nov 2026 (805) 260-0292
Fisher Pump and Well Service C-57 Well Drilling Contractor 1031330 Sep 2027 (805) 346-2422
M & W Pumps INC C-57 Well Drilling Contractor 752893 Aug 2028 (805) 925-1147
Oilfield Environmental & Compliance INC C-57 Well Drilling Contractor 841350 Jun 2028 (805) 922-4772
Watsonville Gccj JV C-57 Well Drilling Contractor 1159767 Aug 2028 (831) 768-4086
Granite - Griffith A Joint Venture C-57 Well Drilling Contractor 1112031 Oct 2027 (831) 768-4086
Granite Construction Company C-57 Well Drilling Contractor 89 May 2027 (831) 768-4086
Maggiora Bros Drilling INC C-57 Well Drilling Contractor 249957 Sep 2027 (831) 724-1338
Norman Steven Const C-57 Well Drilling Contractor 553872 Nov 2027 (408) 529-1027
Wilton Brittsan Douglas C-57 Well Drilling Contractor 1130605 Dec 2026 (916) 508-4497
Crw Drilling C-57 Well Drilling Contractor 1110646 Sep 2027 (916) 952-2463
Jensen Kelin Drilling C-57 Well Drilling Contractor 1005241 Jul 2027 (916) 717-8178
Nix Robert Allen Well Drilling C-57 Well Drilling Contractor 376587 Jun 2027 (916) 761-0919
Scotty's Well Drilling C-57 Well Drilling Contractor 658098 Mar 2027 (916) 508-5853
Woodland Eaton Drilling Co LLC C-57 Well Drilling Contractor 133783 Jun 2028 (530) 662-6795
Penecore Drilling C-57 Well Drilling Contractor 906899 Nov 2027 (530) 661-3600
Probe Tech Drilling & Water Well C-57 Well Drilling Contractor 1116603 Feb 2028 (530) 601-1287
Roadrunner Drilling & Pump Company INC C-57 Well Drilling Contractor 803909 Jun 2027 (530) 406-8559
Welltec C-57 Well Drilling Contractor 891756 Feb 2027 (916) 532-4528
Auburn Dan Wayne Well and Pump C-57 Well Drilling Contractor 1162146 Sep 2028 (530) 488-6110
Diamond Well Drilling Company INC C-57 Well Drilling Contractor 970862 Mar 2028 (530) 823-0354
Tanko Gary C Well Drilling INC C-57 Well Drilling Contractor 282051 Mar 2028 (530) 823-8234
West Slope Water Works INC C-57 Well Drilling Contractor 985327 Jul 2027 (530) 305-6659
Clovis A & S Pump Service C-57 Well Drilling Contractor 782886 Mar 2028 (559) 322-5838
J V H Well & Septic INC C-57 Well Drilling Contractor 1090773 Apr 2028 (559) 301-0222
Krazan & Associates C-57 Well Drilling Contractor 499908 Oct 2026 (559) 348-2200
Triple J Pump Service Incorporated C-57 Well Drilling Contractor 964384 Aug 2027 (559) 288-0957
Galt Liebig Bob Pump Service C-57 Well Drilling Contractor 425554 Jul 2028 (209) 745-2787
Liebig Bob and Sons Pump Service C-57 Well Drilling Contractor 976048 Aug 2028 (209) 745-2787
V & W Drilling INC C-57 Well Drilling Contractor 720904 Apr 2028 (209) 469-7700
Valley Drilling Co C-57 Well Drilling Contractor 299383 Jul 2028 (209) 369-2779
Granite Bay Hanlon Drilling INC C-57 Well Drilling Contractor 1115004 Apr 2027 (916) 770-0499
Isotech Environmental Corporation C-57 Well Drilling Contractor 799951 Oct 2027 (408) 281-2927
V-power Equipment INC C-57 Well Drilling Contractor 1068426 Sep 2028 (916) 266-6743
Viking Drillers INC C-57 Well Drilling Contractor 476668 Jul 2027 (916) 742-1500
Hanford Grabow Well Drilling INC C-57 Well Drilling Contractor 1016556 Jul 2028 (559) 584-9355
Haynes & Sons Well Drilling LLC C-57 Well Drilling Contractor 977797 Oct 2028 (559) 582-9355
Haynes Well Drilling C-57 Well Drilling Contractor 1009479 Dec 2027 (559) 582-9355
King Pump and Well INC C-57 Well Drilling Contractor 1058223 Feb 2028 (559) 775-2070
Hemet Active Drilling & Pump Supply C-57 Well Drilling Contractor 359381 Jun 2028 (951) 926-1254
Crum Sam Water Well Drilling INC C-57 Well Drilling Contractor 593583 May 2028 (951) 658-8805
Hill Victor R C-57 Well Drilling Contractor 613384 Feb 2027 (951) 765-7152
Valente Sebastian C-57 Well Drilling Contractor 1037949 Apr 2028 (714) 875-1115
Irvine Applied Geokinetics LP C-57 Well Drilling Contractor 1088735 Mar 2028 (949) 502-5353
Environmental Support Technologies C-57 Well Drilling Contractor 1112073 Oct 2027 (949) 361-7797
Geoboden INC C-57 Well Drilling Contractor 978226 Oct 2026 (949) 872-9565
Jha Remediation LLC C-57 Well Drilling Contractor 992101 Apr 2028 (949) 453-1045
Orange BC2 Environmental Well Drilling C-57 Well Drilling Contractor 1051275 Mar 2027 (714) 744-2990
Good Earthkeeping Organization INC C-57 Well Drilling Contractor 964300 Aug 2027 (714) 283-1682
Hamilton Drilling Corporation C-57 Well Drilling Contractor 938693 Jan 2028 (310) 429-0900
Pump Systems Unlimited INC C-57 Well Drilling Contractor 985374 Jul 2027 (562) 641-6423
Petaluma Anthony Joseph Adiego C-57 Well Drilling Contractor 1130270 Dec 2026 (707) 975-4083
Jerry and Don's Yager Pump and Well Service C-57 Well Drilling Contractor 424778 Aug 2028 (707) 762-1473
Northbay Well and Pump LLC C-57 Well Drilling Contractor 1157882 Jul 2028 (707) 755-1149
Oasis Pump & Drilling C-57 Well Drilling Contractor 242168 Aug 2028 (707) 762-4028
Ramona Aspin Rick A Construction C-57 Well Drilling Contractor 583402 Dec 2027 (760) 535-4024
Hydro - Tech Well Services INC C-57 Well Drilling Contractor 594721 Apr 2028 (760) 789-7514
Mansolf Edward G C-57 Well Drilling Contractor 541690 Sep 2028 (760) 484-2972
S D Drilling INC C-57 Well Drilling Contractor 958254 Mar 2027 (760) 789-4935
Sonora Canepa and Sons INC C-57 Well Drilling Contractor 425749 Jul 2028 (209) 532-1136
Precision Pump Service INC C-57 Well Drilling Contractor 742031 Oct 2027 (209) 768-5535
Tanko Bros INC C-57 Well Drilling Contractor 395633 Nov 2026 (209) 532-7797
Tanko Dennis C-57 Well Drilling Contractor 530534 Oct 2026 (209) 532-7797
Stockton Advancedgeo INC C-57 Well Drilling Contractor 1063765 Feb 2028 (800) 511-9300
Bee Blessed Water Wells Drilling & Pump Service INC C-57 Well Drilling Contractor 1079625 Aug 2027 (925) 518-0442
Moorman's Water Systems INC C-57 Well Drilling Contractor 468816 Jan 2027 (209) 931-3210
Universal Pump & Supply INC C-57 Well Drilling Contractor 265761 Sep 2028 (209) 464-9839
Templeton Mazzi Well Drilling C-57 Well Drilling Contractor 881710 Jul 2028 (805) 610-2509
Miller Drilling Co C-57 Well Drilling Contractor 324634 Oct 2028 (805) 434-1888
P D B Groundworks C-57 Well Drilling Contractor 784008 Sep 2028 (805) 434-9376
Pacific Coast Well Drilling INC C-57 Well Drilling Contractor 927400 Jan 2027 (805) 434-5543
Tulare Central Valley Water Well Drilling & Pumps C-57 Well Drilling Contractor 1097086 Sep 2028 (559) 688-9223
Hodson Well Drilling C-57 Well Drilling Contractor 933577 Jun 2027 (559) 799-8933
Lincicum Michael Scott Well Drilling Pump Installation C-57 Well Drilling Contractor 730005 Aug 2027 (559) 688-9223
Lott Drilling INC C-57 Well Drilling Contractor 1007750 Sep 2027 (559) 280-7293
Valley Center Brax Company INC C-57 Well Drilling Contractor 487325 Feb 2028 (760) 749-2209
Fain Drilling & Pump Co INC C-57 Well Drilling Contractor 328287 Mar 2027 (760) 749-0701
Stehly Brothers Drilling INC C-57 Well Drilling Contractor 709686 Feb 2028 (760) 742-3668
Widner Arthur Grover C-57 Well Drilling Contractor 528518 Dec 2026 (760) 801-1679
Apple Valley GP Drilling INC C-57 Well Drilling Contractor 873683 Sep 2028 (760) 987-6510
Independent Well Drilling C-57 Well Drilling Contractor 920385 Aug 2028 (760) 247-9882
Superior Well Drilling C-57 Well Drilling Contractor 837757 May 2028 (760) 780-2144
Aptos Cenozoic Exploration C-57 Well Drilling Contractor 682910 Dec 2027 (831) 689-9222
Cenozoic Exploration INC C-57 Well Drilling Contractor 1062344 Jan 2028 (831) 689-9222
Environmental Control Associates C-57 Well Drilling Contractor 695970 Sep 2028 (831) 662-8178
Atwater Quadrant Concrete INC C-57 Well Drilling Contractor 1100542 Jan 2027 (209) 358-0150
Quality Well Drillers INC C-57 Well Drilling Contractor 468732 Sep 2027 (209) 357-0675
Shepherd's Tree INC C-57 Well Drilling Contractor 1109764 Sep 2027 (209) 291-8160
Coachella Franklin Pump Service C-57 Well Drilling Contractor 884612 Sep 2028 (760) 272-0228
MC Calla Curtis Daniel C-57 Well Drilling Contractor 806840 Apr 2028 (760) 398-3977
Southwest Pump & Drilling INC C-57 Well Drilling Contractor 723919 Jun 2028 (760) 398-3977
Cypress Acc Construction INC C-57 Well Drilling Contractor 951739 Aug 2028 (714) 620-2343

Showing 250 of 648 license holders, biggest towns first. The full list is on the state site linked above.

Questions

How do I check that a well pump installer is licensed in California?

The Contractors State License Board (California) publishes the list of licensed water well and pump firms. We read it on October 10, 2026; every name in the table below comes from it, with the license classes the state gives. Ask any business for its license number before work starts.

How many licensed well pump businesses are there in California?

The Contractors State License Board (California) list we read shows 648 businesses or licensees based in California whose license covers well pump work, and 648 that hold a water well drilling license or class. Firms licensed only for monitoring, geotechnical or geothermal work are left out.

Does California require private well owners to test their water?

Private wells are the owner's responsibility. The EPA says to test a private well every year. See our guide to how often to test.

Test your well water every year

The EPA says to test a private well every year for bacteria and nitrates, and no agency does it for you. Tell us when your water was last tested and we'll text you a month before the next test is due, with labs and state-listed well pros near you.

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