BS EN 12566-4 specifies the requirements for septic tanks assembled in situ from prefabricated kits and ancillary equipment where applicable, used outside buildings for the partial treatment of domestic wastewater for a population up to 50 PT. Pipe sizes, loads, water tightness, marking, and evaluation of conformity are specified.
BS EN 12566-4 does not apply to septic tanks receiving greywater only.
BS EN 12566-4 on small wastewater treatment systems is relevant to:
A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater (sewage) flows for basic treatment.
BS EN 12566-4 specifies the guidelines for selection, installation, use, and maintenance of prefabricated septic tanks that are used for small wastewater treatment systems for up to 50 PTs and are assembled in situ.
BS EN 12566-4 benefits the end-user by providing comprehensive information on manufacturing, design, testing, and maintenance methods.
BS EN 12566-4 provides comprehensive information regarding product characteristics, test methods, and dimensions, which can be used to improve the quality and cost-effectiveness of septic tanks and to assure their durability and reliability.EN 12566-4:2016