As used in this chapter:
(1) “Sewage system” means an on-site sewage disposal system.
(2) “Proper performance” means a sewage system which operates so as to:
(A) prevent surfacing of sewage and the creation of a health hazard; and
(B) prevent the pollution and contamination of drinking water supplies, groundwater, and surface water; and
(C) maintain sanitary and healthful conditions during operation.