There has been much debate over the impact of disposable diapers and cloth diapers on the environment. The pro-disposable diaper advocates say that the extra water used to wash cloth diapers is just as much of an abuse to the environment as the production and disposal of disposable diapers. But taking into consideration the following estimates you will probably agree that disposable diapers are much more harmful to the environment than cloth diapers.
It is estimated that roughly 5 million tons of untreated waste and a total of 2 billion tons of urine, feces, plastic and paper are added to landfills annually. It takes around 80,000 pounds of plastic and over 200,000 trees a year to manufacture the disposable diapers for American babies alone. Although some disposables are said to be biodegradable; in order for these diapers to decompose, they must be exposed to air (oxygen) and sun. Since this is highly unlikely, it can take several hundred years for the decomposition of disposables to take place, with some of the plastic material never decomposing.
The untreated waste placed in landfills by dirty disposable diapers is also a possible danger to contaminating ground water. Pro-disposable advocates say that cleaning cloth diapers uses more energy and contributes to the load on sanitary sewer systems and potential water pollution. This view really makes no sense if you think about it. The amount of water used per week to wash cloth diapers at home is about the same amount consumed by an adult flushing the toilet four or five times daily for a week. Also, the greater amount of water and energy being used by diaper service companies to wash large amounts of cloth diapers multiple times; the per diaper impact on energy and water supplies is actually less than home washing.
Finally, when flushing solids from a cloth diaper down the toilet and washing the diapers in a washing machine, the contaminated, dirty water from both toilet and washing machine go into the sewer systems where they are properly treated at wastewater plants. This treated wastewater is much more environmentally friendly than dumping untreated soiled disposable diapers into a landfill.