Remediation of Wetzwilerbach within the groundwater protection zone
The protection zones of the catchment area of the Tambel groundwater well in Herrliberg were audited at the end of 2019. The Wetzwilerbach stream, which flows through the middle of the area, has a damaged concrete gully, which no longer provides sufficient protection for the groundwater. HOLINGER AG has now developed a water treatment project for the municipality of Herrliberg and is currently managing the implementation. A bentonite groundwater barrier is being created for the Wetzwilerbach. Sufficient earth cover and erosion protection are being added, along with fish passable thresholds. In this way, we are combining the benefits of groundwater protection and the renaturation of the watercourse in one project.