(1) study the use of:

(B) recirculation media filters;

(C) aeration treatment units;

(D) drip irrigation;

(E) graveless trenches; and

(F) new technologies;

for residential septic systems that will cause systems to perform satisfactorily as alternatives to currently operating systems that do not perform satisfactorily because of soil characteristics, lot sizes, topographical conditions, or high water tables; and

(2) take all actions necessary to develop plans and specifications for use of the technologies listed in subdivision (1) in residential septic systems.

     (b) The executive board shall adopt reasonable rules under IC 4-22-2 to:

(1) promulgate the plans and specifications developed under subsection (a); and

(2) allow for the issuance of operating permits for:

(A) residential septic systems that are installed in compliance with the plans and specifications promulgated under subdivision (1); and

(B) onsite residential sewage discharging disposal systems in a county having a population of more than three hundred fifty thousand (350,000) and less than four hundred thousand (400,000) that comply with IC 13-18-12-9.

As added by P.L.172-2002, SEC.6. Amended by P.L.104-2022, SEC.99; P.L.56-2023, SEC.146.