Section 15 TEPR (The Environment (Protection) Rules, 1986): Standards specified in Part A of Schedule VI for discharge of effluents into the public sewer shall be applicable only if such sewer lead to a secondary treatment including biological treatment system, otherwise these discharge into sewers shall be treated as discharge into inland surface waters.] [Inserted by G.S.R. 801(E), dated 31.12.1993 (w.e.f. 31.12.1993).]