2500 B.C. The Egyptians built elaborate bathrooms inside the pyramids for their dead to use on their journey to another life. On the island of Crete fresh water sewage systems and flushing toilets were used regularly. Rain water was utilized and cisterns were used for storage. 1600 17th century castles have indoor privies. Unfortunately the plumbing system dumped directly into the surrounding moats. Anyone who dare wade across would surely die. 1778 Joseph Brahma receives a patent for the float and valve flushing system. This principle is still used in today's toilets. 1782 The Stink Trap was patented to eliminate the smell in bathrooms. It successfully eliminated the smell but did nothing to stop the spread of disease.