Don't feel bad Fishona, think of all the waste water you failed to polute, flushing away the waste, the chlorine bleach to disinfect, and if you kids got liquid (Sabin) polio vaccine, remember that is made with live, weakended polio virus, which then gets into water waste stream.

you didn't use fossile fuel to heat the water to wash, and the manufactures where all subject to much stricter contols in the amount of polution and waste they made during manufacturing.. but you as an individual could have added more of a load to waste water, with out any controls.

the thing about the environment, is, there are always choices, and there is no "clean" way to dispose of human waste... land fill or toilets, each has a down side.

(and there is also a US brand of disposable diapers called "Luv's")