Guide
Where to empty a motorhome cassette toilet
Empty a cassette only at a designated disposal point: a motorhome service point (also called a dump station, Elsan point, borne or aire de services), or a campsite's chemical-disposal point if the site lets you use it. Several countries' rules forbid emptying waste anywhere else, and in Scotland the national park authority calls countryside disposal a criminal act with fines up to £40,000. The table below shows how many service points we've mapped in each country.[1][2][4]
Last reviewed 14 October 2026 by Campervan Atlas against the sources listed at the end.
Dump stations we've mapped, by country
| Country | Service points | Recorded free |
|---|---|---|
| France | 2,734 | 37% |
| United States | 1,672 | 12% |
| Spain | 718 | 64% |
| United Kingdom | 279 | 15% |
| Portugal | 121 | 39% |
| Ireland | 24 | 17% |
Service points tagged in OpenStreetMap (amenity=sanitary_dump_station and similar), as imported into Campervan Atlas. "Free" is the share tagged fee=no; untagged doesn't mean paid. Find the nearest one.
Where you can empty it
- Motorhome service points (dump stations): places to empty waste water and fill up with drinking water. In France the "aire de services" is exactly this, and is distinct from the aire where you park.[4]
- Campsites and caravan parks: if you are staying, ask whether the site has a chemical-disposal point you can use; if you are not, ask before using it.
- Use the dump-station finder for the nearest one, or browse by country below.
What the rules say, by country
- Scotland: the Loch Lomond & The Trossachs National Park Authority says irresponsible disposal of the contents of a chemical toilet in the countryside is a criminal act with a maximum fine of £40,000. See Scotland's rules.[1]
- Portugal: the Código da Estrada forbids emptying organic waste and water from a parked motorhome outside proper disposal systems (art. 48.º n.º 7 b), fine €30 to €150). See Portugal's rules.[2]
- Spain: the traffic authority treats a parked motorhome that lets any fluid out as no longer simply parked. See Spain's rules.[3]
- United States: on BLM land, sewage may only be drained from a vehicle at places or receptacles provided for that purpose, and National Parks prohibit draining refuse from a vehicle except in facilities provided. See US rules.[5][6]
- England, Wales, Ireland and France: we haven't found a single national rule on cassette disposal to cite. Treat designated points as the only option.
Chemicals and septic tanks
Toilet chemicals matter where the waste goes: the US EPA warns that emptying a holding tank treated with some chemicals into a septic system, or disposing of tank waste illegally, can create health and environmental hazards. If a campsite or farm is on a septic tank, ask what they accept.[7]
Sources
- Motorhomes and campervans in the National Park, Loch Lomond & The Trossachs National Park Authority. Accessed 14 October 2026.
- Código da Estrada (Decreto-Lei n.º 114/94), consolidated text: art. 48.º, Procuradoria-Geral Distrital de Lisboa. Accessed 13 October 2026.
- Instrucción PROT 2026/04 Autocaravanas, Dirección General de Tráfico. Accessed 13 October 2026.
- Question écrite n° 121715, réponse JO 17 janvier 2012 (aires de camping-cars), Assemblée nationale. Accessed 13 October 2026.
- 43 CFR 8365.1-1 Sanitation, eCFR. Accessed 13 October 2026.
- 36 CFR 2.14 Sanitation and refuse, eCFR. Accessed 13 October 2026.
- RV wastewater: protect your septic system (EPA 909-F-99-002), US Environmental Protection Agency. Accessed 13 October 2026.
How this guide was made: Drafted with AI assistance from the official sources listed below; every statement was checked against those sources on the review date. Counts come from our OpenStreetMap data when the page loads.
Published 14 October 2026. Something out of date? Tell us.