40 CFR § 35.343 - Definitions.
(a) Pollution prevention/source reduction is any practice that:
(1) Reduces the amount of any hazardous substance, pollutant, or contaminant entering any waste stream or otherwise released into the environment (including fugitive emissions) prior to recycling, treatment, or disposal;
(2) Reduces the hazards to public health and the environment associated with the release of such substances, pollutants, or contaminants; or
(3) Reduces or eliminates the creation of pollutants through:
(i) Increased efficiency in the use of raw materials, energy, water, or other resources; or
(ii) Protection of natural resources by conservation.
(b) Pollution prevention/source reduction does not include any practice which alters the physical, chemical, or biological characteristics or the volume of a hazardous substance, pollutant, or contaminant through a process or activity which itself is not integral to and necessary for the production of a product or the providing of a service.