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On-Site Sewage Facility (OSSF)

Information about how to obtain an on-site sewage facility license as an Installer Class I and II, a Designated Representative, a Site Evaluator, an Apprentice, a Maintenance Provider or a Maintenance Technician.

On-Site Sewage System (OSSF) Information and Requirements

On-Site Sewage System Licensing and Registration Overview

State Regulations:

To operate as an On-Site Sewage Facility (OSSF) installer, apprentice, maintenance provider or maintenance technician in Texas, you must be licensed or registered by the TCEQ.

  • Apprentices: Registered apprentices may not perform any services associated with OSSF installations except under the direct supervision of a licensed installer on the site, by radio, or other means of direct communication at all times. The apprentice may represent the supervising installer at the job site; however, the licensed installer must visit the job site at least once each work day to verify that the work of the registered apprentice is in accordance with State and/or Authorized Agent requirements.
  • Installer Class I: authorized to install standard OSSF systems (septic tanks, absorptive drainfields, unlined ET drainfields, leaching chambers, gravel-less pipe, and pumped effluent drainfields).
  • Installer Class II: authorized to install all types of OSSF systems.
  • Maintenance Technicians: perform services associated with OSSF maintenance under the direct supervision and direction of the maintenance provider on-site or be in direct communication with the maintenance provider.
  • Maintenance Providers: authorized to provide service or maintenance to on-site disposal systems using aerobic treatment.
  • Designated Representative: must be licensed by the TCEQ and work for an authorized agent of the TCEQ. They perform site evaluations (when it is part of their job duties), complaint investigations, system evaluations, and inspections of OSSFs that have been issued an authorization to construct to ensure the OSSF has been installed to the criteria established by the TCEQ, or the Authorized Agent Order approved by the TCEQ, whichever is more stringent.
  • Site Evaluator: must be licensed by the TCEQ or a licensed professional engineer. They are authorized to perform preconstruction site evaluations to determine a site's suitability for a particular OSSF system and to identify all features in the area where an OSSF is to be installed that could be contaminated by the OSSF or could prevent the proper operation of the system.
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OSSF Apprentice Registration Requirements

Education and Work Experience Requirements

  • Education: no minimum educational requirements
  • Work Experience: no work experience requirements

Training Course

  • None

Application and Examination

  • An application and fee ($111) must be submitted to TCEQ
  • Examination not required for the Apprentice Registration
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OSSF Installer I License Requirements

Education and Work Experience Requirements

  • Education: no minimum educational requirements
  • Work Experience: no work experience requirements

Training Course (OSSF approved training - TEEX)

  • Installer I Basic Training

Application and Examination

Pass the Installer I exam. Installer I exams are currently administered through the Texas Engineering Extension Service (TEEX). Applications must be submitted and approved at least 14 days prior to the examination. Contact TEEXExit the TCEQ for details (800-723-3811).

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OSSF Installer II License Requirements

Education and Work Experience Requirements

  • Education: no minimum educational requirements
  • Work Experience:
  • Applicants with an OSSF Installer I license must have held the license for at least 1 year and submit either:
    • a sworn statement verifying at least three installations from either a designated representative who approved the installations or three individuals for whom the applicant performed construction services, statements cannot be provided by individuals related by blood or marriage to the applicant or applicant's spouse; or
    • other documentation of the applicant's work experience, approved by the executive director.
    Applicants with an Apprentice Registration must have held the registration for at least 2 years and submit either:
    • a sworn statement verifying at least six installations from either a designated representative who witnessed the installations or from the installer for whom the applicant performed construction services; or
    • other documentation of the applicant's work experience, approved by the executive director.

Training Course (OSSF approved training - TEEX)

  • Installer II Basic Training

Application and Examination

Pass the Installer II exam. Installer II exams are currently administered through the Texas Engineering Extension Service (TEEX). Applications must be submitted and approved at least 14 days prior to the examination. Contact TEEXExit the TCEQ for details (800-723-3811).

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OSSF Maintenance Technician Registration Requirements

Education and Work Experience Requirements

  • Education: no minimum educational requirements
  • Work Experience: no work experience requirements

Training Course (Texas On-Site Wastewater Association)

  • Basic Maintenance Provider Course

Application and Examination

  • An application and fee ($111) must be submitted to TCEQ
  • An examination is not required for the Technician Registration
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OSSF Maintenance Provider License Requirements

Education and Work Experience Requirements

  • Education: no minimum educational requirements
  • Work Experience: See Applicants Experience below
  • Applicant's Experience, must meet one of the following requirements:
    • Possess an OSSF II license;
    • Possess a Class C or higher Wastewater Treatment Operator license; or
    • Have three years of experience as a registered MP and/or Maintenance Technician registrant.

Training Courses (Texas On-Site Wastewater Association)

  • Basic Maintenance Provider Course
  • Advanced Aerobic Maintenance Provider Course

Application and Examination

Complete a TCEQ application ($111) then pass the TCEQ exam. Visit the Exam Schedule and Registration webpage for details.

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OSSF Designated Representative License Requirements

Education and Work Experience Requirements

  • Education: no minimum educational requirements
  • Work Experience: no work experience requirements

Training Course (OSSF approved training - TEEX)

  • Designated Representative Basic Training

Application and Examination

Pass the Designated Representative exam. Designated Representative exams are currently administered through the Texas Engineering Extension Service (TEEX). Applications must be submitted and approved at least 14 days prior to the examination. Contact TEEXExit the TCEQ for details (800-723-3811).

Note

Individuals licensed shall not perform any Designated Representative duties until they are employed by an authorized agent.

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OSSF Site Evaluator License Requirements

Education and Work Experience Requirements

  • Education: no minimum educational requirements
  • Work Experience: no work experience requirements
  • Applicant's Experience, must posses one of the following:
    • Current Installer II license;
    • Designated Representative license;
    • Professional Engineer license;
    • Professional Sanitarian license;
    • Certified Professional Soil Scientist; or
    • Professional Geoscientist license in the soil science discipline.

Training Course (OSSF approved training - TEEX)

  • Site Evaluator Basic

Application and Examination

Pass the Site Evaluator exam. Site Evaluator exams are currently administered through the Texas Engineering Extension Service (TEEX). Applications must be submitted and approved at least 14 days prior to the examination. Contact TEEXExit the TCEQ for details (800-723-3811).

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OSSF Licensing Exemptions

Visit 30 TAC §30.244 Exit the TCEQ for a listing of all exemptions.

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Continuing Education and Renewal Requirements

Continuing Education Requirements

All On-Site Sewage Facility licenses require 24 hours of Continuing Education (CE) to be eligible for renewal. Apprentice and Maintenance Technician registrations do not require CE to renew. 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. Search the License Information webpage to view current CE hours earned.

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. Detailed information can be found on the renewal webpage.

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