Indiana Code Title 13. Environment § 13-18-12-7

(1) engaged in:

as long as the wastewater at that facility has been fully treated and is stabilized;

(2) transporting septage from the point of its removal to another location on the same site or tract owned by the same person, although disposal of the septage must be done in accordance with this chapter;  or

(3) a homeowner who cleans and services the sewage disposal system serving only the homeowner's residence, although transportation and disposal of septage, including land application, must be done in compliance with this chapter.