Services
Certified Backflow Protection: Reliable Protection Against Water from the Sewer
Protection Against Water from the Sewer
Increasing heavy rainfall events are putting ever-greater strain on public sewer systems. The risk of wastewater being forced back from the main sewer into private drainage lines is growing, and the consequences of such damage are not only costly but often involve extensive remediation work.
Areas below the street level, such as basements, semi-basement apartments (souterrains), or underground garages, are particularly vulnerable to backflow. A professional and reliable backflow prevention system is essential specifically for these situations.
We offer you a "certified backflow protection" as a well-designed complete system. This service ranges from an appraisal of your property and the professional installation of backwater valves and waterproof clean-outs, to regular maintenance and inspection. In this way, you protect your property and significantly reduce the risk of water damage originating from the sewer.
Frequently Asked Questions about Backflow Prevention
Here you will find answers to the most common questions regarding backflow prevention.
Backwater occurs when the public sewer network is overloaded (e.g. due to heavy rain) or blockages in the sewer or in your own underground drainage line block the drain. As a result, the waste water can no longer flow off and is pushed back into private house pipes. The water rises up to the so-called backflow level (usually the top of the road). Without backflow protection, this water can then escape from low-lying drains such as toilets, showers or floor drains and flood cellars. A video that explains the topic well can be found here on YouTube.
Professional backflow protection is essential for all buildings where drainage points are located below the top of the road (the backflow level). However, our experts always check whether security is necessary for your property and which measure is the right one first during a professional on-site inspection. We will give you honest advice and only recommend what really makes sense for you.
A single backflow flap can only secure a single line and is often only a partial solution. For example, if the pipes themselves have leaks or if cleaning openings are not pressure-tight, the water can escape from these areas. Our certified backflow protection is therefore a complete system that takes exactly these weak points into account.
Our “certified backflow protection” is a complete system tested by an independent body (Professional Association of Austrian Engineering Offices). The certification confirms that our entire process — from sealing the duct system to functional testing — meets the highest quality and safety standards.
All backflow protection also includes mechanical systems whose function must be regularly tested so that they provide reliable protection in an emergency. We therefore offer regular testing, care and maintenance to ensure the long-term functionality of your system.
The costs of professional backflow protection depend on local conditions. Our principle is full transparency: After a detailed analysis, you will receive a clear and detailed offer from us without hidden costs.
Yes, you can. With its official online platform, Austria offers HORA (Natural Hazard Overview & Risk Assessment Austria) an interactive hazard map. There, you can enter your address directly and receive an initial assessment of the risk from floods. Regardless of the result, protection against backwater from the sewer is recommended in any case, as this can also occur during local heavy rain events without flooding from the river.
Why You Should Choose DerKanal
Immediate Emergency Assistance
Our emergency service is available for you 24/7. Right over the phone, our professionals check whether an on-site deployment is truly necessary or if we can help you with simple instructions.
Technology advantage
We rely on state-of-the-art high-tech equipment for precise, efficient, and material-friendly cleaning.
Experienced Specialists
Our team combines proven craftsmanship with a deep technological understanding and finds the best solution for every problem.
Certified Expertise
Through certifications and ongoing advanced training, we guarantee you service and solutions according to the latest technical standards.
Transparency
We discuss the solution and the costs with you before we start the work. With us, there are no nasty surprises. Furthermore, we fundamentally do not require cash payment in an emergency.
Prevention Over Expense
With professional maintenance and upkeep concepts, we actively protect your pipe and drainage system and help to reduce costs and effort in the long term.
Support with Claims Processing
Our service doesn't end with the repair. We are happy to support you after the job with the entire process of filing claims with your property management and/or insurance company.
Pioneers in Backflow Prevention
Increasing heavy rainfall events challenge every sewer system. As pioneers, we offer you a certified backflow prevention as a comprehensive concept: It includes the sealing of the entire system as well as regular inspection and maintenance.
Wide Range of Services
From pipe cleaning and Cured-In-Place Pipe (CIPP) sewer rehabilitation to leak detection, pressure testing, CCTV inspection, backflow prevention, new sewer construction, and high-performance vacuuming work: We are your experts for everything related to sewer technology.
Sustainable and Responsible
We consciously commit to environmental protection. Whether through our growing e-fleet, electricity from our own PV system, or modern water recycling wherever possible: We work sustainably and conserve resources.
The Components of Our Certified Backflow Protection
Reliable protection against backflow is more than just installing a valve. Our certified process is a complete system built upon accurate analysis and takes all relevant weak points of your system into account.
1. Professional Appraisal & Analysis
Every reliable protection concept begins with a professional on-site appraisal of your situation. Our experts analyze your entire sewer system, the inflows, and the surface water. Based on this, we develop an optimal solution tailored to your property, so you can be sure to receive the right protection for your specific situation.
Key Performance Features at a Glance:
- Application: Comprehensive analysis of the entire drainage situation as the basis for a reliable protection concept.
- Key Advantage: You receive an honest and professional assessment of which measures truly make sense for your building.
- Technical Details: Includes the appraisal of the sewer system and the analysis of surface drainage.
2. Sealing of the Sewer System
A backwater valve is useless if the pipe system itself is leaking. A central and often overlooked component of our certified protection is therefore the professional sealing of your sewer system. We ensure that water cannot penetrate your building past leaking pipes or clean-outs.
- Application: Sealing of leaking pipes, joints (muffen), and clean-outs in the relevant area.
- Key Advantage: Eliminates one of the most common sources of failure and ensures that the backflow prevention system can fully deploy its effect.
- Technical Details: Application of professional sealing and rehabilitation techniques.
3. Professional Installation of the Protection Systems
Based on the analysis, we install the certified protection components appropriate for your system. Depending on the requirement, these may be modern backwater valves, automatic backflow preventers, or pumping stations (lifting stations). The installation is carried out by our specially trained technicians in accordance with the strictest technical standards.
- Application: Installation of backwater valves, backflow preventers, and lifting stations in combined and separate sewer systems.
- Key Advantage: Professional and standard-compliant installation guarantees correct function in an emergency.
- Technical Details: Use of certified protection systems suitable for sewage-containing or sewage-free water.
4. Function Test, Maintenance & Inspection
A backflow prevention system must be 100% reliable in an emergency. Therefore, a final function test (e.g., through a simulated backflow trial) and regular maintenance are essential. We take over this recurring inspection for you to ensure the long-term safety of your system.
- Application: Regular checking, care, and maintenance of all mechanical and electronic components of the system.
- Key Advantage: Lasting safety and reliability through regular, documented functional inspections.
- Technical Details: Includes regular maintenance & inspection as well as the execution of function tests.
At Home in Austria
Our core area for all services, including our 24/7 emergency service, covers Vienna, Lower Austria (Niederösterreich), and Burgenland. Furthermore, for planned deployments and projects, we are also available for you in Upper Austria (Oberösterreich), Styria (Steiermark), Carinthia (Kärnten), and Salzburg.
