Water and sanitation setup for a van
Fresh, grey and black: three water streams to plan before the build. What sizes work and where you service them.
The three streams
70–150 L typical fresh-water tank
50–100 L typical grey-water tank
Cassette / composting the two toilet routes
Servicing on the road
Fresh water refills at aires, campsites and fountains; grey water empties at dump stations (aires, campsites, motorway services). For the toilet, cassette is the simplest EU-wide option but needs dump stations, while a composting toilet removes that dependency for off-grid stays — see our toilet comparison.
Key takeaways
- Plan fresh (70–150 L) and grey (50–100 L) tanks before the build.
- Dump stations on aires/campsites service grey + cassette.
- Composting toilets cut the dump-station dependency off-grid.
Sources
What this page is based on — every source is verified, and links out whenever the document is still reachable.
- Verified / official
- Provisional
- Out of date