We delve deeply into topics like the difference between a simple blockage and a persistent one, the importance of regular maintenance, and how to choose the right approach for water that won't drain. With clear examples and concise explanations, we'll guide you through drain unblockers, preventative tips, and why professional help is sometimes essential.
If you notice a strange smell or if the water only flows away in small doses, do not let it take its course and check our washing machine drain unclogging experiences at Ontstoppen.nl With a 5/5 star rating on Google Reviews, you're guaranteed expert help who know how to clear any drain.
Unclogging your washing machine drain: Your daily comfort guaranteed
A clogged washing machine drain is a common problem in every household. Suddenly, the water stops flowing, and you're immediately faced with a flood or a wet floor. Ontstoppen.nl We see it every day: a clogged washing machine drain can be caused by soap residue, hair, lint, or a buildup of dirt in the drainpipe. Your laundry suffers as a result, and the risk of damage to your washing machine increases. To prevent further problems, it's essential to unclog your washing machine drain quickly and professionally.
How does a good washing machine drain work and what are the risk areas?
Not everyone knows exactly how a washing machine drain works. After each wash, the machine pumps the dirty water through a flexible drain hose to a siphon or directly into the drainpipe. Municipalities in the Netherlands, in accordance with NEN 3215 and building regulations, often install a drain with a minimum diameter, usually 40 mm, equipped with an odor trap to prevent sewer odors and blockages. Problems often arise:
- If the diameter of the drain pipe is too small: Narrow tubes increase the chance of dirt accumulation.
- Poorly constructed curves: Bends that are too sharp slow the flow of water and collect dirt.
- Too much soap residue: A lot of detergent in combination with low temperatures makes residue stick more easily.
- Clogged siphons or stench traps: These parts require regular maintenance.
- Other connected devices: Waste water from a central heating boiler, dishwasher or dryer can cause additional build-up.

If the drain has not been installed properly, or you have not cleaned it properly for a long time, blockages are almost inevitable. Ontstoppen.nl uses professional methods and tools (think Ridgid spring machines, pressure washers like the Rioned AquaJet, and gully cutters) to tackle the problem right at the source. For a professional approach to similar problems in Utrecht, be sure to check out our sewer service for Utrecht.
Unclogging a washing machine drain: Step-by-step plan for a quick repair
Are you dealing with a clogged washing machine drain? We recommend tackling the problem step by step. Prevent damage to your LG or Miele washing machine by following these steps:
- Check the siphon and drain hose: Disconnect the drain hose and rinse it with clean water. Scoop out any debris from the siphon.
- Use a drain snake or flexible hose: Gently twist or push to loosen the blockage.
- Use a manual pump or plungerThis creates pressure to push the clog up.
- Use a pressure washer (if possible)Professionals like us use high pressure for stubborn blockages.
- Test the drain after each step: Run a bucket of water through it, so that it is immediately visible whether the problem has been solved.
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.

Is the water standing still or is the drain smelling? Then there's a good chance the blockage is deeper in the drainage system. Ontstoppen.nl uses camera inspections and advanced tracing to quickly locate the source.
The most common reasons for a clogged washing machine drain
Unclogging a washing machine drain is necessary when the following causes apply:
- Build-up of detergent residueExcessive use of liquid or powder detergent sticks to the inner walls of pipes and causes narrowing. Low-temperature washes are often responsible for this.
- Dirt and lint formation: Lint from towels, clothing, and socks slips through filters and clings to other debris in the line.
- Improper installationA drain hose that's too short or too long, or a siphon without a water trap, can lead to backflow and blockages. Paying careful attention to installation will save you hassle.
- Grease and oil buildup: Residues from polishing cloths or hand washes containing greasy substances stick, especially when washed out with cold water.
By identifying these causes early, you can prevent a complete drain blockage. Other plumbing fixtures in the home can also become clogged, so be sure to check out our tips for Have your bathroom drain unclogged quickly.
Prevention is better: Practical tips to keep your drain clear
It's best to maintain your washing machine drain preventatively. By adjusting a few habits, you can keep clogs at bay. The most effective prevention tips:
- Use the correct dosage of detergent: More is not always better, this way you can prevent excessive buildup in your drain.
- Clean the filter and siphon regularlyCleaning at least once a month prevents clogging by dirt and hair.
- Run a boil wash occasionally: High temperatures flush the pipes clean of grease and soap residue.
- Prevent flattened or kinked drain hoses: A clear, straight flow minimizes dirt build-up.
- Check connection to the sewer: Positive air pressure prevents vacuum suction and water backwash.
We always recommend having your entire drainage system inspected for recurring problems to ensure a structural solution. If you'd like to delve deeper into the technical details, be sure to inquire about our page on unclog drain.
Professionally unclog your washing machine drain: Ontstoppen.nl arranges it
You can try it yourself, but sometimes professional techniques and equipment are required. We work exclusively with top-brand tools and are up-to-date on all regulations regarding sewer and drainage systems, according to European and Dutch standards. Our technicians use techniques such as spring cleaning, high-pressure cleaning, and camera inspections for rat bottlenecks to completely clear the drain without damaging the pipework. Our fixed rate of €169,50, including call-out charges and unlimited labor, makes all the difference, along with our 8-week warranty and no-win-no-fee service.
Request your expert advice or quotation today via Request a free and quick price estimate. Within 24 hours you will know exactly where you stand and you are assured of a solution by Ontstoppen.nlYou can also call or WhatsApp directly to 085 2505 217 or email info@ontstoppen.nl.
Frequently asked questions
How do you recognize a clogged washing machine drain?
You often notice a clogged washing machine drain because the water in your washing machine isn't draining properly or even remains completely in the drum. Sometimes you'll hear bubbling, see water rising in the drain, or smell a musty odor coming from the drain. In many cases, you'll also notice wet spots or leaks around the connections, indicating a blockage further down the line.
To prevent serious water damage, it's important not to wash multiple times if a drain is clearly clogged. We recommend taking immediate action and checking the drain. Do you frequently experience clogged drains in your home? Then you can read more about professionally resolving persistent drain blockages for a permanent solution: Have your drain blockage resolved professionally.
What can you do yourself to unclog a washing machine drain?
If the blockage isn't too deep, you can first try a mixture of hot water and baking soda. Carefully pour the mixture down the drain to loosen any grease and soap residue. You can also gently insert a drain snake into the drain to remove any dirt or buildup. Be careful not to damage the pipe, especially with older pipes.
If this doesn't work or the water still remains, the blockage is either deeper or persistent, such as a buildup of grease, limescale, or textile fibers. In that case, it's advisable to seek professional help to prevent further damage. Also see how we handle more complex drainage problems: unclogging drain by certified company.
Why is my washing machine drain getting clogged?
The main causes of a clogged washing machine drain are a buildup of soap scum, lint, grease, and sometimes small objects like coins or hair ties that enter the drain from clothing. Over time, these residues build up on the walls of the drain pipe, progressively impairing flow and eventually causing a complete blockage.
In addition, using too much detergent or fabric softener can increase the risk of backlogs. Poorly functioning plumbing or missing check valves can exacerbate the problem. Do you frequently experience drain problems in one or more rooms? Then find out everything about unclogging multiple drains simultaneously for a permanent solution: have multiple drains professionally unclogged.
What methods are used Ontstoppen.nl to professionally unclog a washing machine drain?
We use professional drain cleaning equipment such as mechanical springs, high-pressure flushing equipment, and, if necessary, camera inspection to determine the exact location and nature of the blockage. This allows us to quickly and effectively remove both minor and persistent blockages, such as caked-on soap residue, limescale, or grease, without damaging the pipework.
Our service is focused on fast and lasting results. We'll resolve your problem within 24 hours, offer an 8-week warranty on the unblocking, and offer fixed rates and all-inclusive pricing, so you'll never encounter any surprises. If additional pipework needs to be replaced, we'll always discuss the price upfront, so you know exactly what to expect.
What are the costs for having a washing machine drain unclogged by Ontstoppen.nl?
For a single washing machine drain, we charge a fixed all-inclusive rate of €169,50, including VAT and all necessary materials, labor, and call-out charges. This rate applies regardless of the duration of the job, so you always know what to expect upfront and won't encounter any unpleasant surprises later.
If it turns out there's a blockage in the main sewer, we charge an all-inclusive rate of €296,45. In both cases, we always offer a no-cure, no-pay policy and a standard 8-week warranty on every unblocking. This means you're guaranteed Ontstoppen.nl assured of professional workmanship and expert handling.





