The pharmaceutical industry manufactures biological products, medicinal chemicals, botanical
products, and the pharmaceutical products covered by Standard Industrial Classiﬁcation Code
Numbers 2831, 2833, and 2834, as well as other commodities. The industry is characterized by a
diversity of products, processes, plant sizes, as well as wastewater quantity and quality. In fact,
the pharmaceutical industry represents a range of industries with operations and processes as
diverse as its products.