Section 222.119 - Delivery Systems(a) The permittee shall ensure that piping materials used in delivering treated effluent from the treatment facility to the dispersal zones are suitable for effluent and conform to regulations as required by Chapter 217 of this title (relating to Design Criteria for Domestic Wastewater Systems) or Chapter 317 of this title (relating to Design Criteria Prior to 2008) as applicable.(b) The permittee shall identify the piping materials by referring to the appropriate ASTM International, American National Standard Institute, or American Water Works Association specification numbers.(c) A permittee shall use a multiple pump system for all systems requiring pumping of effluent to the dispersal zones.(1) The permittee shall use pumps rated by the manufacturer for effluent disposal.(2) The permittee shall use pumps that are each rated for at least 100% of the design flow.(3) The permittee shall include the pumping capacity and pump head calculations in the plans and specifications.(d) The permittee shall ensure that the pump discharge piping includes a check valve, union, and gate valve for each submersible pump installed.(e) The permittee shall use piping and valves made of corrosion-resistant materials for applications subject to corrosive gases.(f) If self-priming pumps are used for subsurface area drip dispersal systems, the permittee shall use pumps that meet at least the minimum requirements listed under § 217.61 of this title (relating to Lift Station Pumps) or § 317.3 of this title (relating to Lift Stations), with the exception that the pumps are not required to meet the solids-handling requirement.(g) The permittee shall include a check and gate valve for each unit of the discharge piping for self-priming pumps.30 Tex. Admin. Code § 222.119
The provisions of this §222.119 adopted to be effective July 5, 2006, 31 TexReg 5308; Amended by Texas Register, Volume 45, Number 02, January 10, 2020, TexReg 369, eff. 1/9/2020