Full Description ADOPTED_FROM:EN 14701-4:2018 This document specifies a method for the determination of drainability of flocculated sludge. It is applicable to sludge and sludge suspensions from: - storm water handling; - urban wastewater collecting systems; - urban wastewater treatment plants; - treating industrial wastewater similar to urban wastewater (as defined in Directive 91/271/EEC); - water supply treatment plants. This method is also applicable to sludge suspensions from other origin.