Water safety plan manual wsp manual step by step risk management for drinking water suppliers publication details editors world health organization international water association number of pages 108 publication date 2009 languages english arabic chinese french russian spanish to access these language versions please click on the language buttons at the top of this page . World health organization international water association 2009 water safety plan manual step by step risk management for drinking water suppliers world health organization. Water safety plan manual step by step risk management for drinking water suppliers february 22 2017 this world health organization manual provides practical guidance to facilitate water safety plan development focusing particularly on organized water supplies managed by a water utility or similar entity. Show simple item record water safety plan manual step by step risk management for drinking water suppliers. Water safety plan manual step by step risk management for drinking water suppliers the aim of this manual is to provide practical guidance to facilitate water safety plan wsp development focusing particularly on organized water supplies managed by a water utility or similar entity it includes points to consider when developing and implementing a wsp the manual is divided into 11 modules