the world > physical sensation > cleanness and dirtiness > sanitation > provision of sewers > sewage treatment > [adjective] > tested for suitability for septic tank
perc tested1962
1962 News-Herald (West Lake County, Ohio) 1 Dec. 15 (advt.) Excellent location..only minutes from Lakeland Freeway. Perc tested.
1995 News (Frederick, Maryland) 22 June d2/7 (advt.) 1 Ac[re] Bldg lot, perk tested, city water, small barn, beautiful view of mountains.