data processing(Any operation or combination of operations on data, including everything that happens to data from the time they are observed or collected to the time they are destroyed)
waste treatment(Any process or combination of processes that changes the chemical, physical or biological composition or character of any waste or reduces or removes its harmful properties or characteristics for any purpose)
waste water treatment(Any process to which wastewater is subjected which would remove, or otherwise render harmless to human health and the environment, its constituent wastes)
on-site wastewater treatment(A process in which used or spent water is treated at the point of origin or where it was produced, by using a septic tank or some other system to remove or reduce the impact of constituent wastes on human health and the environment)