Details in Chronological Order Details in Random Order Primitive ways of disposing waste: throwing it somewhere, the use of outdoor toilets, open holes in floors and comfortable seats for royalty. First flush toilet as invented but people didn't like it. Aqueducts that brought water into fities also carried waste to river. People used a hole in the floor directly above drainage ditches, and sewer systems built on slants carried dirty water downhill into rivers. Newer version of flush toilet becomes popular, but lack of a city-wide sewer system created health issues. Engineers are working on new designs for toilets that don't need water or electricity. Modern sewer system was developed that didn't poison drinking water. Back to the Article​