We quickly resolve any sewer problem, from stubborn blockages to camera inspections, toilet or drain unblocking, and preventative pipe cleaning. Using the latest technology, we effectively tackle even difficult sewer blockages, so you can quickly get rid of all your worries.
Curious about what others have thought of our service? Feel free to take a look at customer reviews about sewer unblocking at Ontstoppen.nl and discover why we are the right choice for every sewer complaint.
What is sewer unblocking and why is it important?

Unblocking a sewer means removing a blockage in your drainage system, so that wastewater can flow away smoothly again and you will no longer suffer from unpleasant odors, water damage, or even flooding in your home. Ontstoppen.nl We know from experience how annoying a blocked drain is. A blockage can occur anywhere in the sewer system: from the toilet to the kitchen drain, the rainwater drain, or even the main sewer. It pays to take immediate action, because a blocked drain can cause pipe damage, leaks, and the risk of an unhealthy indoor climate due to bacteria and mold.
Blockages occur throughout the Netherlands, whether you live in a historic city center or a modern, newly developed neighborhood. The most important thing is to act quickly and professionally. Often, buildup of grease, soap, hair, or toilet paper is the culprit, but sometimes it's deeper and caused by a collapsed pipe, root growth, or subsidence in the sewer system.
How does sewer unblocking work? Ontstoppen.nl?
Our sewer service is all about expertise and modern techniques. We apply a customized approach to every blockage. First, we use advanced equipment to locate the exact blockage. This includes an inspection with a sewer camera, which provides a live view of the situation. We then use various unblocking methods, depending on the type of blockage and its location:
- High pressure cleaningWe spray water through your pipes under high pressure, completely loosening grease, limescale, sand and other dirt.
- Mechanical unblockingWe use spring machines, spirals, and milling cutters to remove stubborn blockages such as tree roots or accumulations of cloth.
- Sewer camera inspection: With this we detect blockages, cracks or subsidence in the sewer system quickly and efficiently.
- Preventive cleaningRegular cleaning is the recipe for preventing future blockages and extending the life of your system.

We apply each technique with professional systems from A-brands such as Ridgid, Kessel and Rioned, known in the industry for their reliability.
The complete process of unclogging a sewer
In the event of a blocked drain, we immediately act according to a fixed step-by-step plan, so you can quickly enjoy a carefree drainage system again:
- Notification receivedCall or WhatsApp us at 085 2505 217, contact us by email, or submit an online request. We'll schedule an appointment right away!
- On-site inspectionOur experts will arrive with a fully equipped service vehicle. They will map the blockage using detection equipment and, if necessary, perform a camera inspection.
- Unclogging with the right methodWe choose the most effective approach, whether that is high-pressure or mechanical unblocking, and solve the problem sustainably.
- Aftercare and adviceOnce everything is clean again, we'll advise you on maintenance or how to prevent future blockages. You always get an 8-week guarantee on our drain cleaning services.
How We Work
How we work
Report a blockage (without obligation)
Tell us where the blockage is (drain, plumbing, toilet, or sewer). We'll immediately analyze the situation by phone, WhatsApp, or form.
Free quote
You'll receive a clear, all-inclusive price for unblocking—including call-out fees, labor, and a no-win, no-fee policy. No surprises.
National coverage
Our certified sewer specialist often arrives the same day. We unclog drains without any demolition work, using professional equipment.
Unblocking & warranty
We'll fix the blockage, inspect all pipework, and offer an 8-week warranty. Safe, durable, and professional.

If it turns out that old pipes really need to be replaced, we will clearly determine the rate in advance so that you will not be faced with any surprises.
Types of sewer blockages and their causes
Depending on usage and location, various sewer components can cause blockages. We've listed them for you:
- Toilet or toilet drainBlockages caused by wet wipes, too much paper, or sanitary products are a classic problem. Sometimes they're caused by a deep blockage in the ground sewer.
- Sink or kitchen drainGrease, food residue and baked-on soap scum build up in the bends or siphons of your plumbing.
- Shower drain or washing machine drain: Hair, soap scum and limescale build up a strong barrier in your drain over time.
- Rainwater drain / rain pipeLeaves, sand, gravel, or moss can completely clog your rainwater drain. Pay special attention during stormy weather or in the fall!
Sometimes a situation calls for truly swift intervention. Think of an emergency situation like an overflowing toilet or a blockage that stops multiple drains in your home from working. Learn more about these situations in our comprehensive explanation. how to get a clogged drain resolved immediately.
Sewer unblocking: Professional, sustainable and transparent rates
We believe in Ontstoppen.nl Honesty, speed, and results. Whether it's unclogging your bathroom drain, main sewer, or kitchen drain, you always pay a fixed rate per service. No hidden costs, always known upfront. We charge just €169,50 (including VAT) for unclogging a single drain, or €296,45 all-inclusive for flushing your entire main sewer. Unlimited labor is included, so you don't have to worry about the turnaround time. Curious what others say about us? We work for individuals, businesses, and institutions, and are proud to say that we are one of the most popular drain cleaning services in the Netherlands.
What can you do yourself if the sewer is clogged?
Sometimes it's possible to fix minor blockages yourself, although calling in a professional is almost always the best option. We're happy to share our expertise with you:
- Boiling water and soda: A first attempt for minor blockage in the sink, followed by rinsing with hot water.
- Drain spring or plunger: You can use hand tools to loosen superficial blockages, especially with siphons or small pipes.
- No chemicals: Avoid harsh chemical drain cleaners; these often damage pipes and are bad for the environment.
- Get help quicklyIf the water remains stagnant, you hear bubbling sounds or you smell a sewer odor, do not wait any longer and call our emergency service.
Want to know more about professional drain cleaning or drain unblocking services in the region? Check out our information page about immediate assistance with drain blockages.
Need immediate help with unblocking a sewer?
With modern techniques, fair rates, 24-hour service and a "no cure no pay" policy, you are in good hands Ontstoppen.nl Never just for when your drain gets clogged. Experience the peace of mind of an 8-week warranty and personalized advice. Request your free quote today and receive a clear price quote within 24 hours: Request a free quote for sewer unblockingYou can also call or WhatsApp: 085 2505 217 or email info@ontstoppen.nl.
Spacious, fast, professional and always a solution within one day – that is Ontstoppen.nl!
Frequently asked questions
How do you recognize a blocked drain and what should you do first?
A blocked drain is easily identified by signs such as slow water drainage, gurgling sounds from the drain, or a sewer smell in the house. It's also common for multiple drains to become blocked simultaneously, such as the toilet and sink. This indicates a problem further down the sewer system and requires immediate action, as it can otherwise cause indoor flooding.
If you notice the water isn't draining, we recommend first checking whether it's just one drain or if the entire household is affected. Avoid excessive flushing and don't try to solve the problem with harsh chemicals, as these can damage the pipes. Contact specialists such as Ontstoppen.nl for a professional and, above all, safe approach. Want to know more about how we tackle stubborn blockages? Then read on. professionally resolve persistent drain blockages.
What are the most common causes of a sewer blockage?
The most common causes of a blocked drain are accumulations of grease, hair, food scraps, toilet paper, and non-soluble products like wet wipes or sanitary napkins. Kitchen grease solidifies in the pipes and builds up over time into a hard plug, preventing the wastewater from flowing properly. Limescale, tree root growth, or subsidence can also cause structural blockages.
Regular maintenance of your sewer and paying attention to what you flush prevents many problems. We often see that a simple explanation of what can and cannot be flushed can prevent blockages. However, for serious problems, it's always wise to call an experienced professional for a lasting solution. Prefer to avoid the hassle of a clogged drain? View our options for professional drainage solutions where everything is tightly arranged.
How does the unblocking process work? Ontstoppen.nl and what method do you use?
Once you contact us, our technicians will arrive quickly with professional equipment such as spring washers, pressure washers, and camera inspections. We always begin by inspecting the relevant drains and identifying the problem. Using advanced techniques, we immediately identify the cause of the blockage, preventing unnecessary demolition work. Our approach is thorough and effective, with the goal of getting your sewer back to full functionality as quickly as possible.
We work according to the principle: one problem, one all-inclusive rate, no unexpected costs, and always a clear explanation upfront. You benefit from Ontstoppen.nl Enjoy our unique fixed price and 8-week guarantee on the unblocking. After the job, we're happy to advise you on how to prevent a blockage. Want to know all about our all-inclusive prices? Discover our transparent rates on our website.
Can I unclog my drain myself, or is it better to call in a professional?
You can sometimes clear minor blockages like a slightly clogged sink yourself with a plunger, hot water, or an environmentally friendly drain cleaner. For deeper, more stubborn blockages, we advise against using chemicals or metal spirals. These can worsen existing pipe damage and even make the problem worse, for example, by shifting the clog or causing damage to the inside of the drain.
Our experience shows that in many cases, calling in a specialist right away is the best option. With the right equipment and expertise, we ensure the blockage is resolved properly – and permanently – without the risk of additional complications or costs. Trying it yourself rarely hurts with minor blockages, but if you're unsure or the problem seems more serious, let an experienced company handle it professionally for you! For quick help with drainage problems at home, you can always count on our professional unblocking service.
What are the costs of unblocking a sewer and what should I look for when comparing drain cleaning companies?
The costs for unblocking sewers vary per situation, but transparency is essential Ontstoppen.nl Standard: For €169,50 (including VAT), we'll resolve a single drain blockage, and our entire team will be there with professional equipment, including call-out fees. If the problem is deeper in the main sewer, we offer an all-inclusive flushing rate of €296,45 with the same benefits, regardless of the job's duration. For replacements or larger jobs, you'll always receive a clear quote upfront, so you'll never encounter any surprises.
When comparing drain cleaning companies, pay attention to warranties, actual all-inclusive rates, clear communication, and whether replacements and additional work are discussed upfront. A free follow-up inspection or advice afterward can also make a big difference. Safety and quality are always our top priority; we offer a standard 8-week warranty and no hidden costs. Want to learn more about these unique benefits? Discover how we help prevent and resolve blockages immediately, clearly, and without discussion.






