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Computer-Based Testing for Occupational Licenses

Take your license examination on a computer!

CBT flyer

Spanish exams now available by computer-based test (CBT)( Spanish translation instructions available)

  • Class D Water System Operator
  • Class C Groundwater Operator
  • Class C Water Distribution
  • Class C Surface Water Operator
  • Class D Wastewater Treatment Facility Operator
  • Class C Wastewater Treatment Facility Operator
  • Class I Wastewater Collection System Operator
  • Class II Wastewater Collection System Operator
  • Backflow Prevention Assembly Tester
  • Customer Service Inspector
  • Landscape Irrigation Technician
  • On-Site Sewage Facilities Installer I
  • On-Site Sewage Facilities Maintenance Provider

CBT license examinations offer:

      • The convenience of numerous CBT exam sites
      • Daily access and expanded hours to CBT exam sites
      • Immediate exam score with e-mail option
      • Immediate printed exam analysis feedback with e-mail option
      • License issued to applicants passing CBT exam within one week of exam date
      • One immediate retest on the same day offered at some exam sites.
      • User-friendly computer screens

Examinations available for CBT by Licensing Program

            • Backflow Prevention Assembly Tester (BPAT) - written portion
            • Customer Service Inspectors
            • Landscape Irrigation
              • Landscape Irrigator (6 hour time limit) No additional items such as graph paper or an engineering scale is required to take the computer-based test (CBT).
              • Landscape Irrigation Inspector 
              • Landscape Irrigation Technician 
            • Leaking Petroleum Storage Tank (LPST)
            • Municipal Solid Waste Facility Supervisors
              • Class A (4 hour time limit)
              • Class B (3 hour time limit)
            • On-site Sewage Facility (OSSF)
              • OSSF Maintenance Provider
              • OSSF Designated Representative
              • OSSF Installer I
              • OSSF Installer II
              • OSSF Site Evaluator - written portion
            • Underground Storage Tank (UST) On-Site Supervisor
              • UST A
              • UST B
            • Wastewater Treatment and Collection System Operators
              • Class I Wastewater Collection System Operator
              • Class II Wastewater Collection System Operator
              • Class III Wastewater Collection System Operator
              • Class A Wastewater Treatment Facility Operator (6 hour time limit)
              • Class B Wastewater Treatment Facility Operator
              • Class C Wastewater Treatment Facility Operator 
              • Class D Wastewater Treatment Facility Operator 
            • Water Treatment and Distribution System Operators
              • Class A Water Operator (6 hour time limit)
              • Class B Groundwater Operator
              • Class B Surface Water Operator
              • Class B Water Distribution
              • Class C Groundwater Operator 
              • Class C Surface Water Operator 
              • Class C Water Distribution 
              • Class D Water 
            • Water Treatment Specialists
              • Class III
              • Class II
              • Class I

NOTE: All exams have a 3 hour time limit unless otherwise noted. Not all CBT centers can accommodate more than 4-hour exams. Please confirm with the CBT center before scheduling.

Pre-approval of your licensing application is required. For pre-approval, applicants must:

Upon receiving an approval letter, the applicant will need to:

  • make an appointment with a registered Test Center to take the exam - additional testing fees established by each CBT center may apply.
  • bring approval letter with you to your exam.  If you do not have a copy of lose your approval letter, you can print a copy of your application status showing “Approved” from searching your name or license number.
  • some test centers do not offer fee refunds.

Retesting by CBT after failing a written test is allowed, so long as your application is in an approved status.

Registered Computer-Based Testing Centers

Contact each testing location to schedule a CBT exam.

Amarillo - Region 1

Test Center Location Contact Information
Amarillo College Student Service Center, 101
2201 South Washington
Amarillo, Texas 79109
Website: Amarillo Testing Center
Phone: 806-371-5445
Frank Phillips College - Allen Campus Student Resource Center, Room 126
2314 S. Jefferson
Perryton, Texas 79090
Website: Allen Campus Testing Center
Phone: (806) 648-1450
Frank Phillips College - Main Campus James W. Dillard Library Building,
Room LIB5
1301 W. Roosevelt  
Borger, TX  79008
Website: Main Campus Testing Center
Phone: (806) 457-4200 ext, 777
Frank Phillips College - Rahill Campus Testing Center - Room 118A
2890 FM 281  
Dalhart, TX 79022
Website: Rahill Campus Testing Center
Phone: (806) 274-7669

Lubbock - Region 2

Test Center Location Contact Information
South Plains College 1401 S. College Avenue
Levelland, TX 79336
Website: Continuing Education
Phone: 806-716-2547
South Plains College 3907 Avenue Q
Lubbock, TX 79412
Website: Testing Center
Phone: 806-716-4604 (campus) or 806-716-4631 (Testing questions at Lubbock Center)

Abilene - Region 3

Test Center Location Contact Information
Texas State Technical College - Abilene
650 E. Hwy 80
Abilene, TX 79601

Website: Register at TSTC - Abilene
Phone: 325-734-3641

Texas State Technical College - Breckenridge 307 N. Breckenridge Avenue
Breckenridge, TX 76424

Website: Register at TSTC - Breckenridge
Phone: 254-559-7731

Texas State Technical College - Brownwood
305 Booker Street
Brownwood, TX 76801

Website: Register at TSTC - Brownwood
Phone: 325-641-5955

Texas State Technical College - Sweetwater
300 Homer K Taylor Drive
(Sears Building)
Sweetwater, TX 79556
Website: Register at TSTC - Sweetwater
Phone: 325-235-7441
Vernon College - Wichita Falls Testing Center
Century City Center
Room 101
4105 Maplewood Avenue
Wichita Falls, TX 76308
Website: Vernon College Testing Information
Phone: 940-689-3778
Vernon College - Vernon Testing Center
4400 College Drive
Vernon, TX 76384
Website: Vernon College Testing Information
Phone: 940-552-6291 ext.2317

Dallas/Ft. Worth - Region 4

Test Center Location Contact Information
Grayson College - Denison Room DC-115
6101 Grayson Drive
Denison, TX 75020
Website: Grayson Main Campus Testing Center
Phone: 903-463-8724
Grayson College - Van Alstyne

1455 West Van Alstyne Parkway
Van Alstyne, TX 75495

Website: Grayson Testing Center
Phone: 903-415-2509

Navarro College

Gooch One Stop Student Center
Room 103
3200 W 7th Avenue
Corsicana, TX 78110

Website: Navarro College
Email: or
Phone: 903-875-7457
Tarrant County College

4801 Marine Creek Pkwy
Professional Certification Center
NW05 2202
Fort Worth, TX 76179

Website: TCC Testing Center
Phone: 817-515-7653
Texas A&M University 2200 Campbell Street
Commerce, TX 75428
Website: A&M Commerce Testing Office
Phone: 903-886-5122
Texas State Technical College – Red Oak

119 N Lowrance Rd.
Red Oak, TX 75154

Website: Register at TSTC - Red Oak
Phone: (469)820-6838
University of North Texas at Dallas

7300 University Hills Blvd.
Student Center 2025
Dallas, TX 75241

Website: UNT Testing Center
Phone: 972-338-1769
Weatherford College Jack Knight Building
225 College Park Dr
Weatherford, TX 76086
Website: Weatherford Testing Center
Phone: 817-598-6383

Tyler - Region 5

Test Center Location Contact Information
Northeast Texas Community College 2886 FM 1735
Chapel Hill Road,
Mount Pleasant, TX 75455
Phone: 903-434-8273 or 8272
Panola College 1109 W. Panola Street
Carthage, TX, 75633
Website: Testing Services
Phone: 903-693-2046
Texarkana College Palmer Memorial Library
2500 North Robison Rd
Texarkana, TX 75599
Website: TC Testing Center
Phone: 903-823-3278
Texas State Technical College 2650 E. End Blvd S
Marshall, TX 75672

Website: TSTC Marshall Testing
Phone: 903-923-3227

Tyler Junior College - West Campus Regional Training and Development Complex, Room 151
1530 S. Southwest Loop 323
Tyler, TX
Website: Tyler Junior College Testing Center
Phone: 903-510-2993

El Paso - Region 6

Test Center Location Contact Information
Sul Ross State University Box C-171
Room UC211D

Alpine, TX 79832
Website: Sul Ross Testing Center
Phone: 432-837-8178
University of Texas - El Paso 2060 Hawthorne St.
El Paso, TX 79902
Website: UT El Paso Testing Center
Phone: 915-747-5009

Midland - Region 7

Test Center Location Contact Information
Odessa College 201 W. University Blvd.
Odessa, TX 79764
Website: Odessa College Testing Center
Phone: 432-335-6620
University of Texas - Permian Basin Mesa Buliding #1160
4901 E. University
Odessa, TX 79762
Website: UT Permian Basin Testing Center
Email: or or
Phone: 432-552-2630

San Angelo - Region 8

Test Center Location Contact Information
Howard College

3501 N. US Highway 67
San Angelo, TX 76905

Website: Howard College Testing Center
Phone: 325-481-8300 Ext. 3405

Waco - Region 9

Test Center Location Contact Information
Central Texas College 6200 W Central
Texas Expressway
Killeen, TX 76549
Website: Central Texas College
Phone: 254-526-1168
Navarro College - Mexia 901 N. MLK Jr. Hwy
Mexia, TX 76667
Website: Mexia Testing Center
Phone: 254-562-5210
Texas A & M Engineering Extension Service TEEX Rellis Campus, Bldg 8000
3100 State Hwy 47
Bryan, TX 77807
Website: TEEX Testing Center-Bryan
Phone: 800-723-3811
Texas A&M University - Central Texas (Killeen) 1001 Leadership Place
Killeen, TX 76549
Website: A&M Testing Center
Phone: 254-501-5830
Texas State Technical College - Waco 3801 Campus Drive
Student Services Center
Waco, TX 76705
Website: Register at TSTC - Waco
Phone: 254-867-4820

Beaumont - Region 10

Test Center Location Contact Information
Lamar Institute of Technology 855 East Lavaca St.
Eagle's Nest Building
Suite 115
Beaumont, TX 77705
Website: LIT Testing Center
Phone: 409-247-4978
Stephen F. Austin University Rusk Bldg, RM 328
2008 Alumni Drive
Nacogdoches, TX 75962
Website: SFA Testing Center
Phone: 936-468-3958

Austin - Region - 11

Test Center Location Contact Information
Austin Community College ACC Highland Campus
6101 Airport Boulevard
Austin, TX 78752
Website: ACC Testing Center
Phone: 512-223-7395 Campus phone: 512-223-7395
Austin Community College 4400 College Park Drive
Round Rock, TX 78665
Website: ACC Testing Center
Phone: 512-223-7395 Campus phone: 512-223-0158
Texas State University - San Marcos TEMC, Testing Lab, San Marcos Commons Hall, Room G14
419 N. Edward Gary Street
San Marcos, TX 78666
Website: TEMC-Testing Lab
Phone: 512-245-2276
Texas State University - Round Rock TEMC, Testing Ctr., Round Rock Avery Building
1555 University Boulevard
Round Rock, TX 78665
Website: Testing Center, RR
Phone: 512-716-4020

Houston Region - 12

Test Center Location Contact Information
College of the Mainland Enrollment Center A-126
1200 Amburn Road
Texas City, TX 77591
Website: Certification Exams
Email: (Stephanie Hardy)
Phone: 409-933-8676
Galveston College Regents Hall, Room 117
4015 Avenue Q
Galveston, TX 77550
Website: GC Testing Center
Phone: 409-944-1290
Houston Community College - Central 1300 B Holman St , RM 211
Houston, TX 77004
Website: HCC Testing Services
Phone: 713-718-6011
Houston Community College - NE Northline

8001 Fulton St , RM 121
Houston, TX  77022

Website: HCC Testing Services
Phone:  713-718-8073

Houston Community College - SW Stafford

10041 Cash Rd , RM 205
Stafford, TX  77477

Website:  HCC Testing Services
Phone:  718-718-6735

Lone Star College - Creekside

8747 West New Harmony Trail
The Woodlands, TX 77375

Website: Creekside Testing Center
Phone: 832-761-6615

Lone Star College - CyFair

9191 Barker Cypress Rd.
CASA 104
Cypress, TX 77433

Website: CyFair Testing Center
Phone: 281-290-3220

Lone Star College - Cypress

19710 Clay Rd.
Room 114
Katy, TX 77449

Website: Cypress Testing Center
Phone: 832-920-5014

Lone Star College - Kingwood

20000 Kingwood Dr.
SCC 223
Kingwood, TX 77339

Website: Kingwood Testing Center
Phone: (281) 312-1476

Lone Star College - Montgomery 3200 College Park Dr. 
Conroe, TX  77384

Website: Montgomery Testing Center
Phone: (936)273-7377

Lone Star College - Tomball 30555 Tomball Parkway , Room L201 
Tomball, TX 77375
Website: Tomball Testing Center
Phone: 832-559-4245
Lone Star College - University Park 20515 SH 249
Building 13, Room 240
Houston, TX 77070
Website:  University Park Testing Center
Phone:  281-401-5314
Sam Houston State University Huntsville Campus
1921 Avenue J
Academic Building IV, RM 102
Huntsville, TX 77340
Website: SHSU Testing Center
Phone: 936-294-1025
Texas Southern University

University Learning Center
3563 Rosewood Street
Houston, TX 77004

Website: TSU Testing Center
Phone: 713-313-6838
Texas State Technical College - Rosenberg 26706 Southwest Frwy
Rosenberg, TX 77471
Website: TSTC Rosenberg Testing
Phone: 346-239-3467
Wharton County Junior College Richmond Campus
5333 FM 1640
Room 124B
Richmond, TX 77469

Website: Wharton County JC Testing Center
Phone: 281-239-1532

San Antonio - Region 13

Test Center Location Contact Information
Alamo Colleges – San Antonio College San Antonio College
Assessment & Testing Office
Fletcher Administration, FAC112
1819 N. Main Ave
San Antonio, TX 78212

Website: San Antonio College Testing Center
Phone: (210) 486-0444

Texas A&M University - San Antonio Central Academic Building, Suite 209
One University Way
San Antonio, TX 78224
Phone: (210) 784-1366
University of Texas - San Antonio University of Texas
One UTSA Circle
Multiple Disciplinary Building
Suite 1.01.04
San Antonio, TX 78249
Phone: (210) 458-4125

Corpus Christi - Region 14

Test Center Location Contact Information
Del Mar College 3013 Ayers , Room 125
Multi Service Center
Corpus Christi, TX 78404
Website: DMC Testing Center
Phone: 361-698-1645
Texas A&M University Corpus Christi Office of Academic Testing
6300 Ocean Drive
Student Services Center, Corpus Christi Hall, Room 124
Corpus Christi, TX 78412
Website: TAMU-CC Testing Center
Phone: 361-825-2334
Texas A&M University Kingsville Robert B. Cousins Hall
Room 101
925 W. Santa Gertrudis Ave .
Kingsville, TX 78363
Website: Kingsville Testing Center
Phone: 361-593-3303
University of Houston - Victoria Jaguar Hall
Suite 1129
2705 Houston HWY
Victoria, TX
Website: UHV Testing
Phone: 361-570-4285

Harlingen - Region 15

Test Center Location Contact Information
Texas State Technical College - Harlingen 1902 N. Loop 499
Student Services Center Room 312
Harlingen, TX 78550
Website: Register at TSTC - Harlingen
Phone: 956-364-4310
University of Texas Rio Grande Valley UTRGV Brownsville Testing Center
101 Saint Joseph Dr . Suite 100
Brownsville, TX 78530
Website: UTRGV Testing Center
Phone: 956-882-8875

Laredo - Region 16

Test Center Location Contact Information
Texas A&M International University Senator Judith Zaffirini Student Success Center 201
Laredo, Texas 78041-1900
Website:  TAMIU Testing Center
Phone: 956-326-2888