Roslagen Toilet System

Roslagen toilet system offers a proven, resource-efficient and reliable solution for properties with requirements for closed or extremely low-flush sewage. The system is based on vacuum technology that drastically reduces water consumption with each flush, making it particularly suitable for holiday homes, archipelago properties and areas with strict environmental requirements or limited water supply.

By combining a comfortable toilet seat with a closed tank, toilet waste (black water) is handled separately from bathing, dishwashing and washing water (BDT water). This reduces the load on emptying and enables a long-term sustainable VA solution. At vvsmax you will find complete Roslagen toilet systems as well as adapted tanks and accessories for a safe and smooth installation.

A complete guide to the Roslagen toilet system

The Roslagen toilet system is a popular and environmentally friendly choice for individual sewers where there is no municipal connection. The technology is based on the fact that toilet waste is transported using negative pressure rather than large volumes of water. The result is a toilet experience with the same comfort as a traditional toilet, but with a fraction of the water consumption per flush.

Advantages of vacuum-based toilet systems

  • Minimal water consumption: The extremely low flush volume saves groundwater and fills the tank significantly slower than conventional toilets.
  • Less emptying required: Since the volume of flush water is minimized, the costs and transport for sludge emptying are kept down.
  • Environmentally friendly source separation: The black water is collected in a closed container and can be handled safely without burdening local soil beds or infiltration facilities.
  • High user comfort: The toilet is experienced and used like a conventional water toilet in everyday life.

Common areas of use

The system is mainly installed in holiday homes, cottages and permanent residences where the municipality requires a closed tank for toilet waste. It is also the first choice on islands, in archipelago environments and in areas with limited water supply where drilled wells or water reserves require careful consumption.

Things to consider before purchase and installation

  • Municipal permits: Always check with the environmental office in your municipality what rules apply to individual sewers and closed tanks on your property before starting installation.
  • Tank capacity and location: Choose a closed tank with sufficient volume for the size of the household and ensure that it is placed so that the sewage truck can easily access the connection when emptying.
  • Piping and electricity: Plan the piping carefully to optimize the vacuum function, and ensure that the electricity is drawn for the operation of the control and vacuum pump.
  • Frost protection: In cold climates or when used in winter, it is important that pipes and penetrations are laid at a frost-free depth or provided with suitable insulation and heating cable.

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