Best Toilet With Sink on Top to Buy in 2023

Toilets with sinks on top aren’t just about saving space – they’re also about conserving water.

Do you know how much can you save for your house and for the environment?

Let’s estimate that first. Then go to the best options.

Water Savings Calculator
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Let’s cut the bs and dive into your best options.

I filtered down all the options in the market into 3 best ones for you!

SinkTwice – Toilet Sink Surface Mount

SinkTwice - Toilet Sink Surface MountThe overall winner of the toilet With Sink on Top options


  • Easy Install – No plumbing work
  • Touchless Faucet
  • Affordable – Only sink is being selled, not the full toilet
  • Made in USA
  • Works with Standard Toilets

Note: Don’t forget to check compatibility from the Product Description.

Buy now on Amazon via the link below:

Yitahome – Portable Sink and Camping Toilet

YITAHOME Portable Sink and Camping ToiletThe camping winner of the toilet With Sink on Top options


  • Portable
  • Easy Emptying
  • Leakproof
  • Lightweight – 8.6 pounds
  • High Capacity – 8 Gallon (30 L)


  • Not really for your house – by design

Buy now on Amazon via the link below:

PlumbWorld – 2 In 1 Toilet Basin Combo

PlumbWorld - 2 In 1 Toilet Basin ComboThe luxury winner of the toilet With Sink on Top options


  • Stain and Scratch Resistant
  • 10 Year Guarantee
  • Small but Mighty
  • Dual Flush
  • Great Material – Vitreous China


  • Price – due to high-quality material
  • UK Seller – this is a pro if you’re in the UK

Buy now on Ebay via the link below:


  • Are toilets with sinks on top any good?

    Absolutely. They are practical and efficient. They save water and money everyday.

  • How does a toilet with a sink on top work?

    Basically the water you wash your hands is used in the toilet. So the water is recycled on each use. So the toilet and sink are in communication with each other.

  • How much water can I save for the environment with a toilet with sink on top?

    A significant amount! Approximately a person can save 1,825 gallons (6,908 liters) annually.

  • How can I be sure that the sink is compatible with my toilet?

    Most of the toilets has a standard width and length. But to be sure, please always check the product descriptions.

  • Who invented these sinks on toilets?

    The Japanese, of course.

Buying Tips

When buying a toilet with a sink on top, it’s essential to consider the efficiency of the flush system, the quality of materials, and the design. Each of the above recommendations offers a balance of these features, ensuring that you get the best value for your money.

If you’re interested in purchasing any of these models, simply click on the provided links above. Remember, by choosing a water-efficient system, you’re not just saving money but also playing your part in conserving our planet’s precious resources.

History of Toilets With Sink on Top

The Birth of the Modern Toilet

The precursor to our modern-day toilet began to take shape in the late 16th century. Sir John Harington in England devised a mechanism using cisterns and valves—essentially, an early version of the flush toilet. Still, toilets remained relatively unchanged in form for the next several centuries.

Space Constraints Lead to Innovation

Fast forward to the 20th century, post-World War II Japan. With urbanization on the rise, living spaces in cities became cramped. The need to save space while retaining functionality led to the integration of sinks into toilet designs. This was particularly the case in tiny apartments and homes where every inch of space was precious.

The Dual Benefit – Japanese Innovation

While initially a space-saving solution, the benefits of using clean water first for hand washing and then for flushing became apparent. As environmental consciousness grew globally in the 1970s and 1980s, the dual-use system of the toilet-sink combo was recognized not just as innovative but also environmentally friendly. Japan, always at the forefront of efficient design, began to see a rise in the popularity of these units.

Global Adoption

As the 21st century approached, and water conservation became a more pressing concern globally, the concept began to spread. Countries facing water scarcity issues started exploring similar designs. The Western world, driven both by sustainability goals and a rising interest in minimalist living, began adopting and adapting these designs.


Incorporating a toilet with a sink on top is not just a trendy move; it’s a step forward in water conservation efforts. Whether you’re redesigning your bathroom or simply looking for ways to reduce your ecological footprint, these units offer a practical solution that can result in significant water and financial savings in the long run.

With the right choice, you can ensure that your bathroom remains functional, stylish, and environmentally-friendly. So next time you’re in the market for a new toilet, consider one with a sink on top, and be part of the water-saving revolution!