Nobody talks about sewage at dinner parties, but it's one of the most important aspects of van life. Here's everything you need to know.
Understanding the Two Types of Waste
Blackwater (Toilet Waste)
From your toilet — this is the stuff that needs careful handling. It contains harmful bacteria and must be disposed of properly.
Greywater (Sink/Shower Water)
From your kitchen sink and shower. Contains soap, food particles, and grease. Less harmful than blackwater but still needs responsible disposal.
Toilet Options for Campervans
Cassette Toilets
The most common option. Self-contained tanks that you empty at designated disposal points.
- Thetford C224-CW: Popular, compact, easy to empty (~£200)
- Dometic 828: Larger capacity, good for couples (~£250)
- Emptying: Campsites, motorway services, caravan dump stations
Composting Toilets
Separate liquid and solid waste. Solids compost into odourless material over time.
- Separett Villa: Swedish quality, very low maintenance (~£500)
- Nature's Head: Popular in the UK, uses coconut coir (~£800)
- No emptying chemicals needed, more environmentally friendly
Portable toilets
Lightweight options for occasional use:
- Fold-down chemical toilets (~£30)
- Portable camping toilets (~£50)
- Good for emergencies, not full-time use
Where to Empty Blackwater
Campsite Disposal Points
Most campsites have a dedicated disposal point (often called a "Elsan point" or "chemical disposal point"). These are free to use for guests.
Motorway Services
Many motorway services have disposal facilities. They're basic but functional.
Caravan Dump Stations
Search "caravan dump station near me" — there are over 500 across the UK. The Caravan and Motorhome Club has a map.
Public toilets
Some public toilets have disposal facilities, but they're becoming rarer.
Greywater Disposal
Greywater can be disposed of more easily:
- Campsites: Most allow greywater down their drains
- Soakaway: Dig a small hole away from water sources
- Roadside: In remote areas, away from watercourses
- Never: Into rivers, lakes, or the sea
Legal Requirements
- The Environmental Protection Act 1990: Makes it an offence to cause pollution
- The Water Resources Act 1991: Prohibits discharge into controlled waters
- Scotland: Additional regulations under the Scottish Environment Protection Agency
- Practical reality: You won't be prosecuted for occasional greywater disposal in remote areas, but always use proper facilities when available
Keeping Your System Clean
- Use cassette chemicals (blue and green fluids)
- Empty blackwater when the tank is 2/3 full
- Rinse the tank after emptying
- Leave a small amount of chemical in the tank after rinsing
- Clean seals and handles regularly
Tips for Couples and Families
- Empty more frequently with more people using the toilet
- Consider a larger cassette (18L+) for families
- Have a backup plan — carry a spare cassette or emergency kit
- Communicate openly about toilet routines
Odour Control
- Use proper cassette chemicals, not household cleaners
- Keep the cassette in shade when possible
- Ventilate your van regularly
- Add a deodoriser block to the cassette
UK-Specific Resources
- Camping and Caravanning Club: Has a dump station finder
- Search "motorhome waste disposal": Finds nearby facilities
- iOverlander app: Crowdsourced disposal point locations
Managing waste responsibly protects the environment and keeps van life welcome everywhere.
