egeplast SLA® in Grenchen: Section of the drinking water supply successfully rehabilitated

Another rehabilitation of the drinking water pipelines was carried out in Grenchen, Switzerland. To ensure the protection of drinking water, the client SWG relied on egeplast Barrier Pipe SLA® pipes.

In Grenchen, in the Swiss canton of Solothurn, the next and fourth section of the comprehensive, long-term rehabilitation of the drinking water pipelines was successfully completed in summer. The starting point for this long-term planned project was an outdated concrete pipeline that could no longer guarantee reliable supply in the foreseeable future. Pulling new PE pipes into the old pipeline was the simplest, fastest and most cost-effective solution in this case. However, the remaining voids can be problematic in such projects, as water can collect there and become contaminated. To prevent the risk of drinking water contamination, SWG therefore opted for diffusion-tight pipes from egeplast. The Barrier Pipe SLA® system reliably prevents the permeation of pollutants and has already proven itself in this project in the previous sections.

With the new section, the length of the pipelines rehabilitated to date increases to 3.4 km. However, it will still take some time until the construction project, which covers a total of 22.7 km, is completed, because according to the current schedule the rehabilitation of the drinking water pipelines will be completed in 2038. In addition to the water pipeline, three cable protection ducts will also be pulled in so that control and communication cables can be installed later.