Waters Protection Ordinance
(WPO)

¹ The dis­charge of pol­luted waste wa­ter in­to pub­lic sew­ers out­side build­ing zones (Art. 11 para. 2 let. c WPA) is:

a.

ex­pedi­ent if the con­nec­tion may be con­struc­ted prop­erly and with stand­ard build­ing ex­pendit­ure;

b.

reas­on­able if the costs of the con­nec­tion do not sub­stan­tially ex­ceed those for com­par­able con­nec­tions with­in the build­ing zone.

² The au­thor­it­ies may only au­thor­ise new dis­charges of per­man­ent flows of non-pol­luted waste wa­ter in­to a cent­ral waste wa­ter treat­ment plant (Art. 12 para. 3 WPA) if loc­al con­di­tions do not per­mit in­filt­ra­tion or dis­charge in­to a body of wa­ter

³ In or­der for a farm to qual­i­fy for ex­emp­tion from the bond to be con­nec­ted to the pub­lic sew­ers (Art 12 para. 4 WPA), its cattle and pig stock must com­prise at least eight live­stock units.