Waters Protection Ordinance
(WPO)

¹ The FOEN shall no­ti­fy the au­thor­isa­tion bod­ies for plant pro­tec­tion products and biocid­al products of pesti­cides for au­thor­isa­tion re­view if:

a.

these or their de­grad­a­tion products re­peatedly and widely ex­ceed the lim­it value of 0.1 µg/l in wa­ters used or in­ten­ded for use for drink­ing wa­ter (Art. 9 para. 3 let. a WPA); or

b.

these re­peatedly and widely ex­ceed the eco­tox­ic­o­lo­gic­al lim­it val­ues in sur­face wa­ters (Art. 9 para. 3 let. b WPA).

² The eco­tox­ic­o­lo­gic­al lim­it val­ues are the nu­mer­ic­al re­quire­ments for wa­ter qual­ity in ac­cord­ance with An­nex 2 No 11 para­graph 3 Table num­ber 4 which de­vi­ate from the gen­er­al value of 0.1 µg/l.

³ A lim­it value in ac­cord­ance with Art­icle 9 para­graph 3 WPA is con­sidered to be re­peatedly and widely ex­ceeded for wa­ters that are used or in­ten­ded for use for drink­ing wa­ter if:

a.

it is ex­ceeded in at least three can­tons with­in one year;

b.

it is ex­ceeded in at least five per cent of all wa­ters stud­ied; and

c.

a dis­tri­bu­tion ac­cord­ing to let­ters a and b is meas­ured in at least two out of five con­sec­ut­ive years.

⁴ A lim­it value in ac­cord­ance with Art­icle 9 para­graph 3 WPA is con­sidered to be re­peatedly and widely ex­ceeded for sur­face wa­ters if:

a.

it is ex­ceeded in at least three can­tons with­in one year;

b.

it is ex­ceeded in at least 10 per cent of all wa­ters stud­ied; and

c.

a dis­tri­bu­tion ac­cord­ing to let­ters a and b is meas­ured in at least two out of five con­sec­ut­ive years.