Ordinance on Biocidal Products (OBP)

Art. 2a

1 The release of active substances of product types 7, 8, 10, 18 and 21 in accordance with Annex 10 into drinking water, surface waters and groundwater shall constitute a potential significant risk. 2 The aim is to ensure that the concentrations of active substances in accordance with paragraph 1 measured in waters do not exceed the following limits: a. for active substances or their breakdown products in waters that are used or intended to be used for drinking water: 0.1 μg/l; b. for active substances in surface waters: 1. the limits in accordance with Annex 2 Section 11 paragraph 3 number 4 of the Waters Protection Ordinance of 28. Oktober 1998 (WPO) (ecotoxicological limits), or 2. if the active substance is not listed in Annex 2 WPO: the concentration specified on approval below which no effect on aquatic organisms is expected. 3 The FOEN shall ascertain the extent to which the aim has been achieved with the aid of indicators. 4 For this purpose, it shall each year use the availabl