Water tank in your campervan: clean water, the right capacity and proper maintenance

Summary: campervan water tank at a glance

• Every campervan has a fresh water and a waste water tank
• The right capacity depends on your travel style and group size
• Regular cleaning prevents odours and bacteria
• Water points and service stations are essential on the road
• Good maintenance prevents leaks and frost damage

What is a water tank in a campervan?

The water tank in your campervan supplies you with water for drinking, cooking and washing. The system typically consists of:

• a fresh water tank
• a waste water tank
• pipes, taps and a water pump

Together they form the water system of your campervan.

Fresh water tank and waste water tank: the difference

Fresh water tank

This is where you store clean water for daily use. Capacity varies considerably between campervan types.

Waste water tank

This collects used water from the sink and shower. It is important to empty it regularly at designated service stations.

What water tank capacity do you need?

The ideal capacity depends on:

• the number of people
• how often you shower
• how often you refill

Guidelines

• 1–2 people: 80–120 litres
• Family or long trips: 120–150 litres or more

If you often wild camp, a larger tank is more practical. On campsites you can usually refill more easily.

Types of water tanks for campervans

Fixed water tank

Built into or under the campervan. Comfortable and spacious, but less flexible.

Portable water tank or roll tank

Handy for smaller campervans or as an extra supply.

Jerry can solution

Simple and flexible, especially for camper vans or short trips.

Filling up with water: where and how?

You can refill your water at:

• campervan pitches with a water supply
• campsites
• dedicated service stations

Always use a clean fill hose and make sure the hose does not come into contact with dirt.

Cleaning your water tank (step by step)

A clean water tank is essential for hygiene.

How to do it

1. Empty the tank
2. Clean with a suitable product
3. Rinse thoroughly
4. Include the pipes in the process

Repeat this several times a year, and always after a long period of non-use.

Maintenance and winterising

Before winter:

• Completely empty the water tank
• Drain the pipes and pump
• Leave taps open

This prevents frost damage to the tank and pipes.

Common problems

Bad smell or taste

Often a sign of bacterial growth. Clean the tank and pipes thoroughly.

Leaks or pressure loss

Check connections, hoses and the water pump in your campervan. Read more in our guide on the campervan water pump

Smart water management on the road

• Use water mindfully
• Refill whenever you get the chance
• Combine water management with your energy planning

If you use solar panels and travel off-grid, efficient water use is even more important. Read more at solar panels on your campervan

Frequently asked questions about water tanks in campervans

How often should I clean my water tank?
At least twice a year and always after a long period of non-use.

Can I fill up with water anywhere?
No, only use official water points or service stations.

How do I prevent my water tank from freezing?
Completely empty the tank and pipes before temperatures drop below freezing.