Considering of taking a 10 units building in pa with septic

[Yanhua Sappin]

hi bp community, my contractor and I inspected a 10 units building in PA last week. The cap rate is pretty good slightly higher than 10 % and the disadvantages(In my opinion) its 1902 year old building and it runs septic system . I did my researches about how to train tenants by using the septic and especially we see lots of  families with young kids occupying the units so more laundries are done in the building . my experience on real estate investing is that I have done over 10 flips in NY areas and currently own 2 sfrs rentals in PA , should I go ahead with this building or should I continue to buy my sfr rentals (some has public sewer and some has septic in that area ) ? any landlords who own buildings with septic system I appreciate your inputs ,thank you