The Safe Installation of Toilet and Bidet Douche Sprays: What You Need to Know
In recent months, we’ve seen a significant rise in the number of enquiries to our technical helpline regarding the correct installation of toilet and bidet douche sprays. These devices, often marketed as “hygiene sprays” or “handheld bidets,” are becoming increasingly popular among consumers. However, the ease of purchase online or through retail outlets is not being matched with clear guidance or professional advice regarding how these fittings should be installed safely and in compliance with the Water Supply (Water Fittings) Regulations.
Toilet or bidet douche sprays that can dip below the level of the toilet or bidet bowl are classified under Fluid Category 5 in the Water Regulations. This represents the highest level of contamination risk, posing a serious threat of backflow, which could allow wastewater to contaminate the potable water supply. The contaminants at this level include human waste and other harmful pathogens, making it a very real public health concern.
It’s crucial to understand that these devices are not just another bathroom fitting, they interface directly with the domestic water supply and, when installed incorrectly, can result in dangerous cross-connections. If the spray head can be submerged, or even just lie within the bowl or basin, then the risk of contamination rises significantly.
So, what’s the correct method of installation?
In almost all cases, protecting against a Fluid Category 5 risk requires a dedicated hot and cold water supply, fed from separate storage tanks, not directly from the mains. This is particularly relevant for properties using combination boilers or unvented hot water systems. In such cases, the only viable compliance route is to feed the douche spray from a storage cistern with appropriate backflow protection, usually incorporating a Type AUK1 air gap. This creates a physical separation between the stored water and any potential source of contamination, ensuring that backflow into the clean water system is impossible.
This kind of installation is far more involved than a simple pipe connection and should be planned for from the outset of any bathroom renovation. If not anticipated, it can become a costly and disruptive undertaking. Installers and property owners alike must be aware of this before purchasing or fitting such devices.
If you do come across an incorrectly installed douche spray, whether in a domestic or commercial setting, it’s important to act. We strongly recommend raising the issue with the property owner or resident. Explain that the installation poses a serious risk to the water supply, not just for them but potentially for others connected to the same system. Highlighting the safety aspect and the requirements of the Water Regulations can help them understand why corrective action is necessary.
In conclusion, while the convenience and hygiene benefits of douche sprays are clear, their installation must be treated with due care. By ensuring that proper backflow protection is in place, you help uphold the safety of the water supply and remain compliant with legal standards. When in doubt, consult the regulations, or reach out to our helpline for expert advice.
