The EN Certified Septic Tank has a 3, 800 litre (840 Gallons) capacity complete with split Baffle Wall. It is a Double Chamber Tank and its capacity is suitable for 8 people. This tank has Irelands first CEN Certificate for a Precast Concrete Septic Tank: Following rigorous testing at the Institute for Wastewater Technology (PIA Gmbh) in Germany, McGraths Precast Concrete Ltd has been awardedIrelands first CEN Certificate for a Precast concrete septic tank in accordance with EN 12566-1. Why is CEN Certification important? Local Authorities in Irelandwill be adopting EN 12566-1 (Small Wastewater Treatment Systems for up to 50PTPart1: Prefabricated Septic Tanks) as the minimum requirement for a new septic tank from 1st of May 2012. Choosing a system with this certification will now be a critical part of your planning application. The CEN standard, also adopted by the NSAI, specifies a range of requirements and test methods in relation to septic tank design and performance; specifically water-tightness, capacity, hydraulic efficiency and structural behaviour, and acts as a benchmark for systems throughout Ireland and across Europe.