Are Combined Bidet Toilets Legal in the UK?
Combined bidet toilets are increasingly popular in UK bathrooms because they combine a standard WC with a built-in washing function. A common question before buying is whether they are legal to install in the UK. The short answer is yes: they can be installed in UK properties, but the installation must meet the applicable water regulations and backflow-protection requirements.
Are combined bidet toilets legal in the UK?
Yes. There is no general ban on combined toilet-and-bidet products in the UK. What matters is how the product is connected to the water supply and whether the installation provides the correct protection against contamination of drinking water.
Water Regs UK treats a combined toilet and bidet as a Fluid Category 5 risk. In simple terms, that means the plumbing must include suitable protection to prevent potentially contaminated water from flowing back into the mains supply.
What does backflow protection mean?
Backflow protection is a safeguard within the plumbing system. The exact solution depends on the product, its design and the way the bathroom is supplied with water. Some products may include protection as part of their design, while other installations may require additional measures.
Because every property and installation can be different, we do not recommend treating this as a DIY plumbing decision. A suitably qualified plumber can check the specific model, the existing water supply and the appropriate protection required for your property.
Do you need a special plumber?
For this type of installation, using a competent plumber is the safest approach. A professional installer can advise on the relevant Water Fittings Regulations or Byelaws, confirm the required backflow protection and make sure the installation is suitable for the property. WaterSafe is one recognised route for finding approved plumbing professionals in the UK.
What should you check before buying?
Before choosing a combined bidet toilet, check the model's installation requirements and decide whether you want a cold-only or hot-and-cold washing option. It is also worth discussing the product with your plumber before installation, particularly if you are replacing an existing WC or planning a wall-hung installation.
This keeps the buying process straightforward: choose the style and features that suit your bathroom, then let the installer confirm the correct plumbing arrangement for that specific model.
Shop combined bidet toilets
ESE Bathrooms offers a range of Creavit combined bidet toilets including wall-hung, back-to-wall and close-coupled designs, with cold-only and hot-and-cold options available across selected models.
Please note: this article is general guidance only. Plumbing and regulatory requirements can vary depending on the product, property and location. Your plumber or local water undertaker can advise on the requirements that apply to your installation.
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