I've owned this for about 6-8 weeks now and am still emptying it when full of water once or twice a day. The basement walls are cinder block, the floor is cement, there is no drain or sump pump in the basement of this old (ca 1938) house. The walls have been painted with sealant but there are some exposed areas. The air does not seem damp and no active mold  currently. With heavy rain water seeps in from the front and from the rear wall near the basement door that requires wet vacuuming and air drying from fans and I don't expect that to change.