Europe-Places.com has listed approx 194 Sewage treatment plants in Switzerland. Some of the Top rated Sewage treatment plants in Switzerland are- Entsorgung Region Zofingen, Entsorgung Region Zofingen, Kl, Kl, ARA-Wangen-Wiedlisbach, TAF Taucharbeiten AG, ARA-Wangen-Wiedlisbach, Kl, Kl & Gemeindeverband ARA Worblental.