BS EN 937:2016

What is BS EN 937-Chlorine used for the treatment of water about?  

BS EN 937 discusses chemicals used for the treatment of water intended for human consumption. 

Chlorination is the process of adding chlorine to drinking water to kill parasites, bacteria, and viruses.  

Different processes can be used to achieve safe levels of chlorine in drinking water. BS EN 937 is applicable to chlorine used for the treatment of water intended for human consumption. 

Who is BS EN 937-Chlorine used for the treatment of water for? 

BS EN 937 on chlorine used for the treatment of water intended for human consumption is useful for: 

• Chemical manufacturers  
• Water treatment plants 
• Packaged drinking water manufacturers 
• Quality control personnel 
• Inspection personnel 

Why should you use BS EN 937-Chlorine used for the treatment of water?  

BS EN 937 specifies the minimum purity requirements for chlorine used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw material and the manufacturing process other impurities may be present and, if so, this shall be notified to the user and when necessary to relevant authorities. 

BS EN 937 provides you with the characteristics of chlorine and provides the requirements and the corresponding test methods for chlorine. BS EN 937 gives information on its use in water treatment. 

What’s changed since the last update?  

BS EN 937:2016 supersedes BS EN 937:2009 which is withdrawn. BS EN 937:2016 includes some editorial changes with respect to BS EN 937:2009. These include: 

• Deletion of reference to Directive 67/548/EEC of 27th June 1967 in order to take into account the latest Regulation in force  
• Amendment of subclause 6.2 
• Deletion of reference to Directive 98/8/EC of 16 February 1998 in order to take into account the latest Regulation in force