Implementation of measures to reduce micropollutants in wastewater

Federal Office for the Environment

Key facts

At the beginning of 2016, amendments to the Waters Protection Act came into force, enacting regulations to reduce micropollutants in wastewater. The impurities include a large number of harmful trace substances which come from medicines or anti-corrosives, for example. These could not be sufficiently eliminated with sewage treatment plants’ previous purification procedures. A federal levy was introduced to finance the investments of around CHF 1.4 billion required for additional purification. It is levied on all Swiss wastewater treatment plants and refunded as a subsidy to the plants to be upgraded. 75% of the eligible upgrading costs are covered.