(a) Purpose. The purpose of this chapter is to provide a comprehensive regulatory program for the management of on-site sewage facilities (OSSFs), as prescribed by the Texas Health and Safety Code, Chapter 366. This chapter establishes minimum standards for planning materials, construction, installation, alteration, repair, extension, operation, maintenance, permitting, and inspection of OSSFs. This chapter also provides the procedures for the designation of local governmental entities as authorized agents. The licensing of installers, designated representatives, and site evaluators and the registration of apprentices is included in Chapter 30 of this title (relating to Occupational Licenses and Registrations). Unauthorized discharge of effluent into or adjacent to the waters in the state is prohibited.(b) Applicability. This chapter applies to:(1) any person who has an ownership interest in an OSSF; or(2) any person who participates in any activity relating to the development of planning materials, construction, installation, alteration, repair, extension, operation, maintenance, permitting, inspection, or investigation of an OSSF; or(3) any governmental entity that is, desires to be, or was, designated as an authorized agent.