RIBACPD
Aliaxis
Chemical drainage systems are needed to control and safely remove corrosive and hazardous material for which the drainage system has to cope with a range of chemicals and chemical cocktails.
Direct and long-term impact with acids and alkalis can cause severe damage, just see the warning labels on household chemical cleaning products.
Uncontrolled it will have an environmental impact; the primary purpose of a drainage system is to remove it safely from the building in a controlled manner.