A plumbing installation must meet strict standards to guarantee the safety, performance and durability of the system. In Belgium, a number of rules govern the distribution of drinking water, the evacuation of wastewater and the installation of sanitary equipment. Compliance with these standards helps prevent leaks, contamination and pressure problems.

1. General plumbing regulations

Plumbing in Belgium is governed by the Règlement Général sur les Installations Intérieures d’Eau (RGIE) and regional building regulations. These rules guarantee water quality, installation safety and proper wastewater disposal.

Main criteria to be met :

• Drinking water quality: the materials used must comply with health requirements and not alter the water supply.
• Separation of drinking water and wastewater: to avoid contamination, it is forbidden to connect a drinking water circuit directly to a drain without a non-return device.
• Regulated pressure and flow: a pressure reducer may be required if inlet pressure exceeds 4 bar.
• Drainage standards: pipe diameter and slope must ensure optimum drainage and avoid blockages.

2. Permitted materials and connections

The materials used must comply with health and technical standards. The most common are copper, PER, multilayer and PVC. Each type of pipe must be installed with the right fittings to guarantee a lasting watertight seal.

• Copper remains the benchmark for drinking water and heating circuits.
• PER and multi-layer are preferred for their ease of installation and resistance to temperature variations.
• PVC is used for drains, with glued or interlocking fittings depending on the type of installation.

3. Distance and layout of equipment

The location of water points and sanitary appliances must follow certain rules to ensure optimal operation and easy maintenance.

• A minimum clearance must be maintained around sinks and showers to facilitate access.
• Pipes must be well ventilated to avoid unpleasant odors and drainage problems.
• Sufficient clearance around water heaters and hydrophore units is recommended for maintenance operations.

4. Electrical safety and compliance

When a plumbing installation is close to an electrical network, certain precautions must be taken to avoid the risk of electrocution. In bathrooms, electrical equipment must be placed at a regulated distance from water points, in compliance with RGIE standards.

5. Connection to public networks

All new installations must be connected to the drinking water network and to the sewage system in accordance with local standards. Depending on the region, specific rules may apply concerning connection to the sewage system or installation of a septic tank.

Call on Leader Services

A plumbing installation that complies with the relevant standards guarantees longer service life and optimal operation. Leader Services works with you to ensure a safe and reliable network, in compliance with all applicable regulations.

• Discover our plumbing services: Leader Services – Plumbing
• Need a professional? Contact us here: Leader Services – Contact

Conclusion

Compliance with plumbing standards is essential to ensure the safety, hygiene and durability of your installation. Whether it’s the quality of materials, regulatory distances or connection to public networks, every detail counts. Calling in a professional can help you avoid mistakes and guarantee an installation that complies with current requirements.