LIPPOLDSWILENKEMMENTAL Wastewater Treatment Plant, Hugelshofen, Thurgau, Switzerland

LIPPOLDSWILENKEMMENTAL is a wastewater treatment plant located in Hugelshofen, within the municipality of Kemmental in the canton of Thurgau, Switzerland. The plant serves a population of approximately 4,875 people, placing it in the small-to-medium agglomeration category. It is situated in a rural area near the border with Germany, close to Lake Constance. Switzerland enforces stringent wastewater treatment standards under the Federal Water Protection Act (Gewässerschutzgesetz). Plants of this scale are typically required to provide at least secondary treatment, with nutrient removal in sensitive catchments. The plant's designed capacity of 1.00 supports its service population, and operations are managed to meet national effluent quality requirements. The treated effluent from the plant ultimately drains into the Rhine River basin via local streams, flowing into Lake Constance (Bodensee) and then continuing through the Rhine to the North Sea. The region supports diverse aquatic life and is an important migratory corridor for fish. The plant plays a key role in protecting local water quality and the downstream ecosystem.

The plant discharges into the Rhine River basin, with treated effluent flowing through local streams into Lake Constance (Bodensee), a large alpine lake that supports diverse aquatic ecosystems. Lake Constance is a critical drinking water reservoir for the region and hosts important fish spawning grounds. The downstream Rhine River continues through Germany and the Netherlands to the North Sea, making the plant's treatment performance vital for transboundary water quality.