Waters Protection Ordinance
(WPO)

¹ Farms that keep poultry or horses and farms serving the pub­lic in­terest need not have their own or leased ag­ri­cul­tur­al land on which at least half of the farm ma­nure ac­cu­mu­lat­ing in the en­ter­prise can be used if it is guar­an­teed that the farm ma­nure will be used by an or­gan­isa­tion or an­oth­er farm.²⁰

² ...²¹

³ Farms serving the pub­lic in­terest (Art. 14 para. 7 let. b WPA) are:

a.

farms that serve ex­per­i­ment­al, re­search or de­vel­op­ment pur­poses (re­search in­sti­tutes, uni­versity farms, per­form­ance test­ing in­sti­tu­tions, in­sem­in­a­tion sta­tions, etc.);

b.²²

pig farms that cov­er at least 25 per cent of the en­ergy needs of pigs with food by-products that come from milk pro­cessing;

c.²³

pig farms that cov­er at least 40 per cent of the en­ergy needs of pigs with food by-products that do not come from milk pro­cessing;

d. ²⁴

pig breed­ing en­ter­prises that cov­er at least 40 per cent of the en­ergy needs of pigs with food by-products that come both from milk pro­cessing and not from milk pro­cessing.

⁴ In mixed an­im­al hus­bandry farms, the ex­cep­tion un­der para­graph 1 ap­plies only to that part of the an­im­al hus­bandry that ful­fils con­di­tions for grant­ing an ex­cep­tion.²⁵

⁵ The can­ton­al au­thor­it­ies shall in each case grant an ex­cep­tion un­der para­graph 1 for a dur­a­tion of five years at most.²⁶