Overview
AFFOLTERN ZWILLIKON wastewater treatment plant serves Affoltern am Albis, Zürich, Switzerland. It treats wastewater for approximately 16,912 people under Swiss federal water protection regulations.
AFFOLTERN ZWILLIKON is a wastewater treatment plant located in Zwillikon, Affoltern am Albis, in the canton of Zürich, Switzerland. The plant serves a population of approximately 16,912 people, placing it in the medium agglomeration category for Swiss wastewater infrastructure. Switzerland enforces stringent water protection under the Federal Water Protection Act (Gewässerschutzgesetz), which mandates advanced treatment for all municipal plants. Plants of this scale typically employ mechanical-biological treatment with phosphorus removal to meet Swiss effluent standards. The plant discharges treated water into the local hydrological network, which ultimately drains into the Reuss River and then the Rhine River. The Rhine basin supports diverse aquatic ecosystems and is a critical water resource for the region. Proper treatment helps protect downstream water quality in this sensitive Alpine watershed.
Environmental context
The plant's treated effluent flows into local streams that feed the Reuss River, a major tributary of the Rhine. The Rhine basin is ecologically significant, supporting migratory fish species and diverse aquatic life. Swiss regulations require high treatment standards to prevent nutrient pollution and protect this important river system.
Frequently asked questions
The plant is located at Weidstrasse 31, Zwillikon, in the municipality of Affoltern am Albis, Bezirk Affoltern, canton of Zürich, Switzerland.
The plant serves approximately 16,912 people, classifying it as a medium-sized agglomeration under Swiss wastewater infrastructure.
Treated wastewater is discharged into local watercourses that flow into the Reuss River, a tributary of the Rhine River.
The plant operates under the Swiss Federal Water Protection Act (Gewässerschutzgesetz), which requires advanced treatment including phosphorus removal for all municipal plants.
Swiss plants of this scale typically use mechanical-biological treatment with nutrient removal to meet strict effluent standards, ensuring protection of sensitive Alpine watersheds.
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