TCEQ License Information

Texas Commission on Environmental Quality (TCEQ)

Detailed information on license requirements can be found on the TCEQ website. 


All applications must be submitted through the TCEQ application program.


Individuals can look up their current license status through the TCEQ search database.

State Regulations

Any individual who under contract installs, exchanges, connects, maintains, or services fixed or portable equipment in public or private water systems in the State of Texas for the analysis and treatment of potable water to alter or purify the water or to add or remove a mineral, chemical, or bacterial content must be a Licensed Water Treatment Specialist.

- Title 30 Texas Administrative Code, Chapter 30, Subchapter H

Classes of Licenses

Class I: Individuals who have been issued this license must work under the supervision of an individual holding a higher class license, a local plumbing inspector, or a health official that has jurisdiction where the work is performed. Work is restricted to the following activities:

  • exchange and regeneration of portable tanks;
  • regeneration of nonportable tanks; or
  • other tasks which may be assigned by the supervisor and for which direct supervision is provided.

Class II: individuals who have been issued this license:

  • shall have demonstrated a practical working knowledge of the mechanics and servicing principles of water conditioners;
  • are deemed able to perform water treatment installations, exchanges, services, or repairs of equipment;
  • are considered to be aware of the public health requirements connected with their activities; and
  • are excluded from working on reverse osmosis and deionization equipment unless the work is performed under the supervision of an individual holding a higher class license.

Class III: Individuals who have been issued this license meet minimum standards of qualifications established for the installation, exchange, servicing, and repair of water treatment equipment and appliances, including reverse osmosis and deionization equipment.

Class 1 Requirements

Education and Work Experience Requirements

  • Education: no minimum educational requirements
  • Work Experience: no work experience requirements
  • Approved areas of work include installation and/or servicing water treatment appliances.


Training Course

  • None


Application and Examination

Class 2 Requirements

Education and Work Experience Requirements

Without a High School diploma or General Equivalence Diploma (GED):

  • Education: no minimum educational requirements
  • Work Experience: three years of work experience required

With a High School diploma or GED:

  • Education: High School diploma or GED
  • Work Experience: two years of work experience required

One Year of College:

  • Education: one year of college (32 semester hours)
  • Work Experience: one year of work experience required

Approved areas of work include installation and/or servicing water treatment appliances.


Training Courses

  • Basic Water Conditioning


Application and Examination

Class 3 Requirements

Education and Work Experience Requirements

High School diploma or General Equivalence Diploma (GED):

  • Education: High School diploma or GED
  • Work Experience: three years of work experience required

Two Years of College:

  • Education: two years of college (64 semester hours)
  • Work Experience: two years of work experience required

College Degree:

  • Education: college degree
  • Work Experience: one year of work experience required

Approved areas of work include installation and/or servicing water treatment appliances.


Training Courses

  • Basic Water Conditioning
  • Advanced Water Conditioning


Application and Examination

Continuing Education and Renewals

Continuing Education Requirements

All Water Treatment Specialists licenses require 12 hours of Continuing Education (CE) to be eligible for renewal. CE hours are given for successful completion of TCEQ approved training courses.

CE hours must be acquired prior to the expiration of the license and may be obtained any time during the validity of the license


Renewal Requirements

Occupational licenses are valid for three years then must be renewed with the TCEQ. Renewal applicants must have completed the required CE requirements, submit a renewal application and criminal history attestation, and pay the renewal fee.