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Black Water Tank or Cassette Toilet?

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Overland camping is a popular and adventurous way to explore the great outdoors, and one of the most important aspects of it is choosing the right toilet. Two of the most popular options for overland camping toilets are black water tanks and cassette toilets. Each of these options has its pros and cons, so it is essential to know what you're getting into before making a decision.

Black Water Tank

A black water tank is a large storage container that is installed in an RV, overlanding trailer, or a campervan to store waste. The tank is connected to the toilet and can hold a considerable amount of waste, making it ideal for longer trips or trips with a larger group of people.


More capacity: Black water tanks are larger in size, meaning that you can store more waste, which is useful for longer camping trips or trips with a larger group of people.

  1. Less maintenance: Black water tanks typically require less maintenance than cassette toilets as they are made of heavier materials and are not as prone to cracking or leaking.

  2. Convenient disposal: Black water tanks can be emptied at RV dump stations, making the disposal of waste more convenient than having to find a place to dump a cassette toilet.


  1. More difficult to install: Black water tanks require a more complicated installation process and often need professional installation, which can be more expensive.

  2. Heavier and bulkier: Black water tanks are much heavier and bulkier than cassette toilets, making them more difficult to transport and store.

  3. Higher cost: Black water tanks are typically more expensive than cassette toilets, making them a more costly option for those on a budget.

Cassette Toilet

A cassette toilet is a compact and lightweight option for overland camping toilets. The toilet consists of a removable waste container that can be easily emptied when full.


  1. Lightweight and compact: Cassette toilets are much lighter and more compact than black water tanks, making them easier to transport and store.

  2. Easy to install: Cassette toilets are much easier to install and can often be done by the owner, which can save money on installation costs.

  3. Lower cost: Cassette toilets are typically less expensive than black water tanks, making them a more budget-friendly option.


  1. Limited capacity: Cassette toilets have a limited capacity, meaning that you may need to empty them more often, especially on longer trips.

  2. More maintenance: Cassette toilets are more prone to cracking and leaking, meaning that they require more maintenance and cleaning.

  3. Convenient disposal can be a challenge: Cassette toilets can be more challenging to dispose of as you need to find a suitable location to dump the waste, which can be difficult in some areas.

In conclusion, both black water tanks and cassette toilets have their advantages and disadvantages, and the best option for you will depend on your specific needs and preferences. Before making a decision, consider the length of your trip, the size of your group, and your budget. With the right choice, you can have a comfortable and stress-free overland camping experience.

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