Sewer Rehabilitation Aargau –Rehabilitate the entire canton’s pipelines without excavators, without construction sites, and without open questions

In the canton of Aargau, the supervision of private property drainage is the responsibility of the respective municipality. The water protection office of your municipality – often located at the building office – orders a renovation as soon as your pipes no longer meet the water protection requirements. Typical triggers are: a wastewater-related construction project (the municipality already checks the property drainage once the construction cost exceeds CHF 100,000), an ongoing public sewer renovation in your street, where the private connections are also checked, or a targeted municipal condition survey. The municipal wastewater regulation – based on the cantonal model regulation of the Department of Environment – regulates the details in a binding manner.

Yes, and especially well done. Most construction sites in the canton of Aargau are drained using a mixed system, where dirty and rainwater flow into the same pipe. Trenchless methods like the Inliner rehabilitate the entire pipe length, including joint connections – the very places where mixed systems pose the greatest risk of foreign water ingress. Over 90 % of the damage patterns we encounter in Aargau properties can be repaired without digging. Only in the case of completely collapsed pipes or massive cross-sectional deformation is a local intervention necessary – but we will discuss this in advance with you.

The construction time for most projects is between one and three working days – whether it’s a single-family house in Suhr or a multi-family building in Zofingen. Larger overbuilds or commercial properties can also take one to three weeks depending on the length of the pipeline, although we work in stages and maintain the wastewater system. For the lead time, you should expect two to five weeks: from the request to the offer to the sewer permit by the municipality. In emergencies – backflow, pipe rupture, acute water leakage – our 24/7 patrol service is on call and we are on site as quickly as possible, no matter where in the canton.

The technical lifespan of a properly executed inliner renovation is 50 to 70 years – comparable to a completely newly installed pipe. The warranty is based on SIA standard 190 and the quality requirements defined in the «Ordner Siedlungsentwässerung» of the Department of Environment. In addition, the liner manufacturers offer product warranties of up to 10 years. The smooth inner surface of the liner has an additional advantage: it reduces deposits and reduces future maintenance costs.

Yes, without exception. In the canton of Aargau, channel television investigations may only be conducted by qualified companies. The recordings and the written report serve as the basis for the rehabilitation plan and as part of the sewer application to the municipality. After the rehabilitation, the TV recordings must be submitted to the water protection office within a month along with the VSA-KEK import file, the plan of the completed works (PAW), and the signed acceptance protocol. We perform the inspection using our own camera equipment and create all documents in the format requested by your municipality.

Basically, yes. With renovations of the external pipes – from the house to the connection to the public sewer – you practically notice nothing as a resident. With sprayliner work on sewer pipes inside the building, the affected section cannot be used for a few hours, typically a half to a full day per section. Especially in the many rowhouse developments and apartment buildings in the Aargau, we coordinate the work so that the residents always have at least one functioning wet room. A drain plug was never required in our projects in the canton of Aargau.

According to the Water Protection Act and the municipal sewage regulations, the costs of operating, maintaining, and renovating private property sewage systems are borne by the property owners. In the case of public sewer renovations, where the private connections are also inspected at the same time, the inspection costs can be covered by municipal special financing for sewage – however, the repair itself remains the responsibility of the owner. In the event of sudden damage such as a pipe rupture with consequential damage, depending on the policy, the building or building water insurance covers the settlement of the consequential damages. Age-related wear and tear, on the other hand, is not covered by insurance. Sewer renovation costs in the canton of Aargau are, in any case, tax-deductible as valuable property maintenance. We provide the complete documentation in every case – for the municipality, the insurance company, and the tax authorities alike.