
Water, Gas and Sanitation in Belgium: Everything you need to know
Managing water, gas, and sanitation systems is crucial to ensuring comfort and safety in your home or building. In Belgium, whether you live in Flanders, Brussels, or Wallonia, these facilities are subject to strict regulations and require special attention. Find out everything you need to know about these essential services.
1. Why are water, gas and sanitation supplies important?
a. The importance of correct installation
Improper installation of water, gas or sanitation pipes can lead to serious problems
Water leaks : Risk of flooding and water damage.
Gas leaks : Safety issues that can cause poisoning or explosions.
Sanitation problems : Bad odors, blockages or contamination of wastewater.
b. Compliance with Belgian standards
In Belgium, each region has its own regulations:
Flemish Region : The installations must comply with the standards of the Flemish Overheid (Flemish Building Master).
Brussels-Capital : The Region requires specific certifications for plumbing and gas work.
Walloon Region : Installations must comply with the directives of the Public Service of Wallonia (SPW).
A well-installed system not only ensures your safety, but also your legal compliance.
2. The different types of services related to water, gas and sanitation
a. Water inlets
Water inlets include:
Pipe installation : Laying pipes for drinking water and hot water.
Connection to the public network : Connection to the local water supply.
Installation of water meters : Mandatory for measuring consumption.
b. Gas arrivals
Gas related works include:
Connection to the natural gas network : Essential for heaters and cookers.
Installing gas detectors : To ensure safety.
Gas line maintenance : Regular inspection to prevent leaks.
c. Sanitation systems
Sanitation systems allow wastewater to be evacuated and treated:
Septic tanks : For homes not connected to the public network.
Individual wastewater treatment plants : Modern and ecological solutions.
Rainwater drainage networks : To prevent flooding.

3. Key steps for a successful project
Step 1: Planning
Before starting work:
Check local regulations.
Obtain the necessary permits (planning permits, specific authorizations).
Plan a realistic budget.
Step 2: Choosing materials
Choose durable materials that comply with standards:
- Copper or PVC pipes for water.
- Reinforced steel pipes for gas.
- Resistant materials for sanitation systems.
Step 3: Execution of the work
Make sure the work is carried out by certified professionals. Poorly executed installation can lead to additional costs in the long run.
Step 4: The interview
Regular maintenance is essential to extend the lifespan of your installations:
- Check water and gas lines annually.
- Clean sanitation systems every 2-3 years.
Financial aid available in Belgium
In Belgium, several subsidies and grants can help you finance your projects:
- Sanitation bonuses : Grants for the installation of ecological systems.
- Water saving aids : Replacing old equipment with modern solutions.
- Gas subsidies : Modernization of installations to improve energy efficiency.
For more information, visit the following sites:

Frequently Asked Questions
1: How much does it cost to install a water supply in Belgium?
Cost varies depending on the region and the complexity of the project. Expect to pay between €500 and €2,000 for a standard installation.
2: Do I need a permit to install a septic tank?
Yes, planning permission is generally required. Contact your local government office for details on the procedures.
3: What is the lifespan of a sanitation system?
A well-maintained system can last between 20 and 30 years.
Conclusion
Water, gas, and sanitation systems are essential for any construction or renovation project in Belgium. Regardless of your region (Flanders, Brussels, or Wallonia), it is essential to comply with legal standards and call upon qualified professionals to ensure the safety and durability of your installations.