Certified Self Containment Basics

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Summary / Guidelines For

 

Motor Caravans , Caravans & Camper Vans

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Updated November 2024 For Interpreting and Applying new regulations

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INTRODUCTION

 

Key Requirements for Vehicle Self-Containment in New Zealand

 

To have your vehicle certified as self-contained, certain essentials are necessary. Here’s a summary of the core components:

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• Freshwater Tank: A minimum capacity of 12 liters per person.

• Food-Grade Water Hose: A non-toxic, opaque hose for fresh water.

• Sink and Trap: A functional sink with a water trap or seal on each waste outlet.

• Grey Water Tank: Holds at least 12 liters per person and includes proper venting.

• Discharge Hose: If using a fixed grey water tank, an evacuation hose (minimum 3 meters) is required.

• Sealable Trash Bin: A secure refuse container for waste.

• Toilet: Must be usable inside the vehicle with a capacity of at least 3 liters per person. (For the green warrant, a cassette or fixed toilet with a separate, black tank is required. (now not required to be vented as at 29/8/2024)

 

This list covers the basics, but additional considerations—like layout, material quality, and precise measurements—are essential. The complete official regulations provide detailed guidance. For specific questions or a walk-through, feel free to reach out to us.

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Wondered What Does “Self-Contained” Mean?

A self-contained vehicle is equipped to meet occupants' basic needs—like waste disposal and sanitation—independently for up to three days. Achieving certification opens up access to hundreds of free camping areas throughout New Zealand. You can find more details in the self-containment regulations.

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What if My Vehicle Doesn’t Pass the Test?

If your vehicle falls short of certification standards, I’ll provide a clear list of adjustments needed to bring it up to code. After you make these adjustments, a free retest is available. Many clients opt for a preliminary assessment before a full build or conversion—this can be an ideal way to plan your setup efficiently.

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The Advantages of Self-Containment

Certification allows you to camp freely in numerous areas around New Zealand. Without it, you’ll be restricted from these designated spots and could face fines for unauthorized camping.

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Venting Requirements for Grey Water Tanks

All grey water tanks, whether portable or fixed, must have a vent to ensure safe and sanitary usage. Regulations suggest a vent diameter of 10mm (25mm is preferred), with placement extending to the flood line and ending outside the vehicle.

 

Green Warrant Toilet Standards

For green warrant certification, toilets must be permanently installed, accessible, and usable with the bed fully set up.

 

Converting UK Caravans to Meet NZ Standards

Adapting a UK-imported caravan for self-containment varies based on its current features and the number of occupants. Typically, modifications may include adding waste traps or larger rollaway tanks. If you’re unsure about what your caravan needs, contact me to discuss your options.

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Here are basic diagrams of what your set-up should look like.