Indiana Code Title 13. Environment § 13-11-2-144.7

Sec. 144.7. (a) For purposes of IC 13-18-12, “onsite residential sewage discharging disposal system” means a sewage disposal system that:

(b) The term includes a system that employs advanced treatment components not used in standard septic systems, such as a disinfection component that uses chlorine, ultraviolet light, or ozone, to reduce the concentration of the pathogenic constituents of the effluent to an acceptable level before the effluent is discharged.