It was estimated by Fluidmaster in 2006 that there are 250 million toilets installed in private households in America. This does not include public facilities, offices, hotels, stadiums, schools, dormitories, resorts, etc.
~ Gallons-per-flush (GPF) over the years: 1920s to 1950s 7 GPF ~ 1960's & 1970s 5 GPF ~ 1982 3.5 GPF ~ 1994 1.6 GPF ~ 2010 1.28 GPF.
~ Beginning in 1994 all toilets manufactured are marked with their Gallons Per Flush (GPF) rating. The rating may also be shown in liters, Liters Per Flush (LPF). The markings are on the bowl where the seat attaches. If a toilet has no marking, then it is 3.5 GPF or greater.
~ Toilets consume about 25% of water inside a home. (Southern Nevada Water Authority.)
~ Low-flow toilets cause stink in San Francisco. Skimping on toilet water has resulted in more sludge backing up inside the sewer pipes resulting in a rotten egg smell in some areas. (San Franciso Chronilce 2/28/11.)
~ Enameled wooden toilet seats and croquet balls are made of the same materials in the same factory - Bemis Manufacturing, Wisconsin, USA.
~ Patent number #272369 was granted to Seth Wheeler of Albany, New York in 1883 for perforated toilet paper rolled on cardboard tubes. (Wikipedia)
~ The first stall in a public bathroom is the least used and the cleanest. (AmusingFacts.com)