In Europe, anyone who produces salt for water treatment must adhere to numerous quality standards. Standards which relate to, among other things, production and testing methods as well as the use of additives. It is thanks to quality standards that the end consumer can rest assured the salt they purchase is of good quality and safe to use. Along similar lines, strict regulations apply to salt for industrial use. This article provides an overview of everything you need to know about quality standards from EN to DIN.