Dishwasher drain blocked

Dishwasher Drain Blocked? Quick Solutions from RRD!

Does this sound familiar? Water remains in your dishwasher? A blocked dishwasher drain is one of the most common problems in modern households. According to research by the Dutch Water Union (2025), 45% of blockages are caused by grease, food scraps and so-called “biodegradable” wipes. These blockages not only cause odours and leaks, but can also damage your floor or smart home appliances. Fortunately, RRD has been solving this problem quickly and sustainably for 15 years – call 06 24356980 now for an expert within 1 hour!

Recognise the Symptoms of a Blocked Dishwasher

Before we discuss the causes and solutions, it is important to recognise the symptoms of a blocked dishwasher drain. Common signs include:

• Water remains: One of the most obvious signs is that water remains in the dishwasher after a cycle.
• Unpleasant odours: A blocked drain can cause unpleasant odours, especially if food waste remains in the pipes.
• Slow drainage: If the water drains slowly, this may indicate a partial blockage.
• Noise issues: Unusual noises during washing up may also indicate a problem with the drain.

How does a blocked dishwasher drain occur?

A blocked dishwasher drain can have various causes. Here are the most common ones:

1. Grease and Oil: Grease residues from dishwater adhere to the inner walls of the pipes. Over time, this forms a sticky layer to which food residues stick, leading to blockages.
2. Food scraps: Rice, pasta, and coffee grounds are common culprits. These particles swell and can block the drain.
3. Hygiene products: Many people use so-called ‘flushable’ wipes, but 68% of these products do not dissolve in water (Consumentenbond, 2025). This can lead to serious blockages.
4. Filter wear: In older dishwashers (more than 5 years old), filters can become worn, making them less effective at trapping dirt.
5. Chemical drain cleaners: The use of chemical drain cleaners can damage the coating of modern pipes, leading to more expensive repairs.

Zelf Proberen? 3 Veilige DIY-Tips (+ Waar je op Moet Letten)

1. Cleaning Filters
   • Step 1: Pull out the bottom drawer of your dishwasher.
   • Step 2: Unscrew the filter (usually at the bottom right) and rinse it under running water.
   • Step 3: Use an old toothbrush to remove stubborn dirt.
   • Tip from our expert: Do this at least once a month to prevent a blocked dishwasher drain!
2. Sproeiarmen ControlerenChecking spray arms
   • Clogged nozzles cause poor drainage. Use a needle to carefully clear the holes.
   • Please note: Do not force anything! Damaged spray arms cost €85–€150 to replace.
3. Natural Cleaning with Baking Soda
   • Sprinkle 3 tablespoons of baking soda into the drain.
   • Pour boiling water over it and leave to steep for 30 minutes.
   • Rinse with cold water. If this does not work, stop immediately and call an expert – further DIY attempts may damage the pipes!

Why Choose RRD? 5 Reasons for Fast Professional Assistance

1. If the above tips do not help, it is time to call in a professional. Here are some reasons why this is a wise choice:
   1. Expertise: Professional drain cleaners have the experience and knowledge to solve the problem quickly and effectively.
   2. Advanced Technology: Many companies, such as RRD, use camera inspections to determine the cause of the blockage. This prevents unnecessary excavation work.
   3. Environmentally Friendly Solutions: Professional services often use enzymatic cleaning agents that are safe for the environment and effectively dissolve grease and biofilm.
   4. Guarantee on Work: Many companies offer guarantees on their work. This means that if the problem recurs, they will return free of charge to resolve it.
   5. Emergency service: When a dishwasher is blocked, rapid assistance is often required. Professional services are frequently available 24/7.

Prevent Future Problems – 2025-Proof Tips

• To prevent your dishwasher drain from becoming blocked, here are a few tips:
  1. Use a drain filter: Install a smart drain filter that vibrates when there is a risk of blockages. This can help prevent blockages.
  2. Do not pour grease down the drain: Always pour oil and gravy into a container and not into the sink.
  3. Annual Maintenance: Book a preventive maintenance visit to keep your sewerage system in top condition.
  4. Replace Old Filters: Ask an expert to check your filters. This can often be done free of charge during a drain cleaning visit.

Get in touch!

Is your dishwasher drain blocked? Contact us! Call us on 06 24356980 and get immediate help from an expert. We are ready to help you with all your blockage problems!

Deeper Insight into the Causes of a Blocked Dishwasher Drain

1. Incorrect Installation

A common cause of a blocked dishwasher drain is incorrect installation. If the drain pipes are not connected properly or if they are too steep or too flat, this can lead to poor water drainage. This can result in standing water and blockages. It is crucial to ensure that the installation is carried out by a professional who is familiar with the requirements for dishwashers.

2. Outdated Equipment

Older dishwashers can cause more problems than newer models. As appliances age, parts such as filters and pumps can wear out. This can lead to reduced efficiency and a greater chance of blockages. It is advisable to have older appliances checked regularly and to consider replacing them if they frequently malfunction.

3. Poor Maintenance Habits

Poor maintenance habits can also contribute to a blocked dishwasher drain. Failure to clean filters and spray arms regularly can lead to a build-up of dirt and grease. It is important to develop a routine for maintaining your dishwasher to prevent blockages.

Preventive Measures for a Healthy Dishwasher

1. Regular Maintenance

One of the best ways to prevent your dishwasher drain from becoming blocked is to carry out regular maintenance. This includes cleaning filters, checking spray arms and inspecting drain pipes. By performing these tasks regularly, you can detect and remedy problems at an early stage.

2. Use of Dishwashing Detergent

Using the right dishwasher detergent is essential. Cheap or unsuitable dishwasher detergents may not dissolve properly and can contribute to grease build-up. Choose high-quality dishwasher detergents that are specially designed for use in dishwashers.

3. Pre-treatment of Plates

Before placing plates and cutlery in the dishwasher, it is a good idea to remove large food scraps. This reduces the risk of blockages and ensures that your dishwasher works more efficiently. Rinse plates briefly before placing them in the dishwasher.

What to Do When Your Dishwasher Drain Is Blocked?

1. Check the Drain

If you suspect that your dishwasher drain is blocked, start by checking the drain. Ensure that the drain pipe is not blocked by dirt or other obstacles. You can do this by disconnecting the drain pipe and inspecting it.

2. Use a plunger

A plunger can sometimes help to clear a minor blockage. Place the plunger over the drain opening and press down firmly and then push upwards. This can help to loosen the blockage.

3. Call a Professional

If the blockage persists, it is time to call in a professional. An expert can assess the situation and use the right techniques to clear the blockage safely and effectively.

Technology and Innovations in Drain Cleaning

1. Camera inspection

Modern drain cleaning services use camera inspection to view the inside of pipes. This enables technicians to identify the exact location and cause of the blockage without unnecessary digging. This saves time and money and ensures a targeted approach.

2. Hydrojetting

Hydrojetting is an advanced technique that uses high-pressure water to remove stubborn blockages. It is particularly effective for grease build-up and other obstacles that are difficult to reach. Hydrojetting is safe for most types of pipes and can deliver quick results.

3. Enzymatic Cleaning

Instead of chemical drain cleaners, many professionals use enzymatic cleaning agents. These products are biodegradable and safe for the environment. They work by dissolving grease and organic material, reducing the likelihood of blockages.

Conclusion

A blocked dishwasher drain can be a frustrating problem, but with the right knowledge and preventive measures, you can avoid many of these issues. Regular maintenance, using the right products, and calling in professionals when necessary are crucial for keeping your dishwasher running smoothly.

If you ever encounter a blocked dishwasher drain, do not hesitate to contact an expert. With their knowledge and experience, they can provide a quick and effective solution so that you can enjoy a hassle-free dishwashing experience again.

Do you require assistance with a blocked dishwasher? Contact RRD on 06 24356980 for prompt and professional service!