Yes, all small domestic wastewater (sewage) treatment plants up to 50 persons must, by European standard regulations, be fully type tested and certified with the CE Mark in accordance with EN12566-3.
WPL Diamond Range
The high quality WPL Diamond package wastewater (sewage) treatment range is CE marked, fully type tested and certificated in accordance with the mandatory European standard BS EN12566-3 2014 for small wastewater treatment systems. Performance tested at an independent accredited facility in Aachen, Germany by PIA Institute for Wastewater Technology. See our WPL Diamond BS EN12566-3 2014 certificate.