Wastewater Regulations & Standards

Clean Water Act

A 1972 regulation of pollutant discharge in any US waters and the quality standards of surface waters. Learn more about the EPA’s Clean Water Act compliance. Learn more:



National Pollutant Discharge Elimination System (NPDES). A permit program that controls water pollution by regulating point sources that discharge pollutants into waters of the United States. Learn more:



Spill Prevention, Control and Countermeasure (SPCC). A plan for oil spill prevention, preparedness and response to prevent oil from getting into navigable waters and the shorelines. Learn more:


Wastewater Equipment Standards

European Union Performance Standards

The leading international environmental performance standards for Waste Water Engineering, including CEN EN-858 for separator systems for light liquids (e.g. oil and petrol). Learn more:


API Standards

The American Petroleum Institute (API) developed petroleum and petrochemical equipment and operating standards, including API 421 (Management of Water Discharges: Design and Operation of Oil-Water Separators) and API 650 (Welded Steel Tanks for Oil Storage). Learn more:


UL Standards

UL developed standards for safety and environmental sustainability. Standards include UL 1746 (Standard for External Corrosion Protection Systems For Steel Underground Storage Tanks), UL 142 (Standard for Steel Aboveground Tanks for Flammable and Combustible Liquids), and UL 58 (Standard for Steel Underground Tanks for Flammable and Combustible Liquids). Learn more: