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✓ Use of own staff
✓ 3-month guarantee
✓ Fixed rate, no hourly rate
Call us at 085 303 9999
✓ Fixed price
✓ No call-out fees
✓ 3-month warranty

Is the water in your sink not draining properly, or are strange noises or unpleasant odors coming from the drain in your home or commercial property in Zaandam? There's a good chance your sink is clogged. A clogged sink can cause a lot of inconvenience. Our plumbers are extensively trained and well-equipped. They have the right knowledge and materials to quickly and professionally unclog your sink in Zaandam! Choose a reliable company and easily make an appointment by phone or via our website for sink unclogging in Zaandam!
To know the best way to unclog your sink in Zaandam, it's helpful to understand what caused the blockage. A clogged sink can have various causes. The most common ones are:
Objects like food scraps, hair, dirt, or other items that accidentally fall into the sink can cause a blockage.
Over time, a buildup of food residue, soap scum, and grease can lead to a clog in the sink.
Limescale can accumulate in the pipes and narrow the drain, potentially causing a clogged sink.
Sometimes, structural issues in the pipes, such as sagging, cracks, or incorrect installation, can obstruct water flow and eventually lead to a clog.
It's important to identify the cause of the clog to find an effective solution. Our skilled plumbers are ready to assist you in finding a lasting solution for your sewage problem.
Do you want to unclog your sink in Zaandam? You might think that doing it yourself is the best and cheapest option. However, this is not always true. In fact, an incorrect approach can significantly worsen the drainage problem. Our certified plumbers have the necessary knowledge, experience, and equipment to unclog your sink in Zaandam. Thanks to our extensive service area, our drain cleaning service is always nearby. If you experience the same problem again within 3 months, we will resolve it for you free of charge.

Posted on Google![]()
Toon OudemansNovember 9, 2026Trustindex verifies that the original source of the review is Google.
I had an excellent experience with Rioolbeheer Nederland in Amsterdam. The issue involved an underground storm drain that was clogged with roots. We made clear agreements in advance regarding the schedule and price. They came by several times because the job turned out to be more complicated than initially anticipated. They did a great job and handled everything professionally.Posted on Google![]()
Sanna MesmanNovember 2, 2026Trustindex verifies that the original source of the review is Google.
Very friendly and service-oriented. Extremely satisfiedPosted on Google![]()
Jan-Paul WierengaOctober 27, 2026Trustindex verifies that the original source of the review is Google.
Top-notch service. Quick response, fair pricing, and good communication. It wasn't an easy job, but they didn't give up, and everything is back in order now.Posted on Google![]()
Rolls1October 24, 2026Trustindex verifies that the original source of the review is Google.
Nice guy. Knew what he was doing. Professional tools. Problem solved. Cleaned up. Transparent and fair price. No issues whatsoever.Posted on Google![]()
Fred van VeenSeptember 26, 2026Trustindex verifies that the original source of the review is Google.
Othman did a thorough job; he took the time to thoroughly clean the drainpipe outside and then inspect it with a camera. We could see that he had done a great job. He’s a skilled professional.Posted on Google![]()
Daria LegkaiaSeptember 24, 2026Trustindex verifies that the original source of the review is Google.
Great service and communication. I submitted a request, got a call within a few minutes, and the problem was solved the next day.Posted on Google![]()
Mike and DanaSeptember 17, 2026Trustindex verifies that the original source of the review is Google.
I’m extremely satisfied with the service from Rioolbeheer Nederland! From the very first contact, they handled everything quickly and pleasantly. Technician Othman was incredibly friendly, professional, and knowledgeable. He found the problem very quickly and, fortunately, was able to fix it right away. Everything was clearly explained, and the work was done quickly and neatly. It’s really nice to have someone come over who knows what they’re doing and is so friendly. I’m very happy with the fast service and the solution! I definitely recommend them. Thanks again, Othman and Rioolbeheer Nederland! 😊👏🏼
At RBNL, we strive for transparent communication and customer satisfaction. That's why we are clear about the costs of unclogging your sink in Zaandam. This way, you won't face any unexpected surprises. We work with fixed rates and surcharges instead of hourly fees. Additionally, you don't pay any call-out charges. With our fixed rates and surcharges, you know exactly what to expect.
Below you will find our working hours and the corresponding rates and surcharges:
Local blockages
Toilet, shower, sink, drain, basin, washing machine
Unclogging the main line
Unclogging using high pressure + camera inspection
Sewer inspection with camera
Checking for problems such as leaks or cracks
Smoke detection for sewer system
Tracing the cause of sewer odor
Smoke detection & camera inspection
Mapping the piping system using smoke detection and camera inspection
€165 incl. VAT
€296 incl. VAT
€180 incl. VAT
€180 incl. VAT
€220 incl. VAT
✔ Fixed rate, no hourly fee
✔ 3 months warranty
✔ No call-out charges
✔ Fixed rate, no hourly fee
✔ 3 months warranty
✔ No call-out charges
For unusual working hours, surcharges apply. See here the working hours and the rates and surcharges that apply to the mentioned working hours:
On the following days, normal rates apply:
– weekdays from 08:00 to 18:00
On the following days, a 50% surcharge applies:
– weekdays from 18:00 to 00:00
– Saturday from 08:00 to 18:00
On the following days, a 100% surcharge applies:
– all days from 00:00 to 08:00
– Saturday from 18:00 to 00:00
– Sundays and public holidays
As sewage experts, we provide a wide range of drainage services. Besides unclogging sinks in Zaandam, you can also enlist our help for unclogging showers, unclogging toilets, and unclogging drains in Zaandam. View all our services and easily book an appointment by calling 085 303 9999 or by scheduling an appointment through our website.
Are you dealing with a clogged sink and does the blockage seem to be superficial? In that case, you can try to unclog the sink yourself in various ways. Typically, a superficial clog is located in or around the U-bend (siphon). You can try to remove the blockage by unscrewing and cleaning the U-bend. Other methods to resolve superficial clogs include:
Pour buckets of water down the drain and watch for a whirlpool to form. If you see a whirlpool, it's often a sign that the sink is no longer clogged.
Baking soda, also known as cleaning soda, is an excellent agent for cleaning drains. By flushing the sink with baking soda, you can loosen stubborn dirt in the drain and resolve small clogs.
If grease is causing the clog, you can try to dissolve it with dish soap. Fill a bucket with hot water and add a generous amount of dish soap. Slowly pour this mixture down the sink and let it sit for a few hours.
Some small clogs can be resolved by using a dishwasher tablet. Place the tablet in the sink drain and pour hot water over it. Let it work overnight and flush it through with one or two liters of hot water the next morning.
If the water is still draining slowly in the sink, you can wait until there's no water left in the sink and then place the vacuum cleaner nozzle over the drain opening. With a bit of luck, the vacuum cleaner will suck out the clog as you empty the drain.
If the sink is clogged due to limescale, you can try flushing the drain with baking soda and vinegar. Slowly pour the mixture into the drain (note: the mixture will fizz) and let it sit overnight. After it has worked, thoroughly flush the drain with water.
Plungers can cause wear and tear to your pipes. Therefore, always try the methods mentioned above for unclogging your sink first, or call in a specialist.
Have your attempts to unclog the sink been unsuccessful, or do you not have time to do it yourself? Then contact us by phone or make an appointment via our website for sink unclogging in Zaandam, and before you know it, our friendly technicians will be at your door.
Is your sink clogged? No plumbing job is too big or too small for us. Contact us today!

Your home or work comfort is our priority!
At RBNL, we highly value transparency, customer satisfaction, and reliability. That's why we offer a worry-free guarantee and unconditional service. If you choose RBNL, you can count on the following benefits:
✓ 3-month warranty
✓ Use of our own staff and equipment
✓ Fixed rates & no hidden costs
✓ No repeat appointments thanks to extensively trained and equipped plumbers
RBNL is here for you. Our priority is to restore your comfort at home and work. Let our certified technicians unclog your sink in Zaandam and benefit from our guarantee. We guarantee that your drain will function optimally again after our visit.
At RBNL, we see your sewer problem as our problem. That's why we are not only here to unclog your blocked sink, but we also give you some tips to prevent your sink from getting clogged:
To keep the inside of the sink free from soap scum and grime, it's important to regularly flush the U-bend (siphon) with warm water and a handful of baking soda. This can help prevent clogs and unpleasant odors in your home.
An effective way to prevent food, dirt, and other objects from clogging the sink is to place a strainer over the drain opening. The strainer catches these items, preventing them from reaching the U-bend (siphon). Make sure to clean the strainer regularly. This way, you can easily resolve a developing clog and prevent future blockages!
Be careful that objects like pins and cotton swabs don't accidentally end up in the sink, as this can lead to blockages.
By making sure that large amounts of food items do not end up in the sink, you can prevent the sink from getting clogged by food and grease residues.
Has your sink become clogged and you want to unclog it in Zaandam? Then contact us. We'd be happy to solve it for you!

Rioolbeheer Nederland specializes in unclogging, cleaning, inspecting, and locating sewers, drains, and pipes. Your satisfaction is our goal. Customer satisfaction is of paramount importance to us.



Locations
Contact
Rioolbeheer Nederland B.V.
Tel: 085 303 9999
Address:
Amsterdam Address:
Jacob van Lennepkade 151 H
1054 ZL Amsterdam
Utrecht Bilthoven Address:
PC Staalweg 60
3721 TJ Bilthoven
Email address: info@rbnl.nl
Chamber of Commerce: 87133989



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