Self Containment/NZMCA

Self containment


We do our Self containment and certification through the New Zealand Motor Caravan Association (NZMCA) and hence you must be a member.

If you don’t intend becoming a member we can arrange certification through another trade body.


The NZMCA work tirelessly for the benefit of caravan and motor home owners, there are many member benefits available which even without trying often amount to more than the annual subscription, plus a fantastic travel directory listing amongst all the regular DOC and campgrounds  many  ‘secret’ spots kindly shared by other members and a bi monthly magazine.

Self containment goes a long way to keeping NZ clean and green the association fights strongly to ensure councils allow certified self contained caravans to park in freedom camping spots that are not available to none certified vehicles.
We have 2 qualified self containment officers so can do the conversion on your caravan and get it certified self contained for you.

What it involves on your caravan.


For Self Containment you need

  • Fresh water supply: 4L per person per day for 3 days (i.e. minimum 12L per person)
  • A sink
  • Toilet: 1L per person per day for 3 days (i.e. minimum 3L net holding tank capacity per person)
  • Holding tank: 4L per person per day for 3 days (i.e. minimum 12L per person ) and monitored if capacity is less than the fresh water tank
  • An evacuation hose
  • A sealable refuse container (with lid)

We have to replace and re-route most of the waste water pipes under the van, fitting waste traps and observing the diameters and max run a pipe can be.
We take these pipes to a point on the off side of the caravan and route them into a closeable ball valve. Next we modify your roll away waste tank with breathers and close off ball valves (see pic) the tank then connects to the caravan via a flexible hose.




Doing it this way means we can usually SC the van for 4 people, any more than that and you need to take additional water capacity.


We generally don’t install permanent grey water tanks – but we can do, you just need to take the following considerations into account
1. When you pitch up you will often have an awning up and it then doesn’t make it very easy to take your caravan to the dump station to empty the tank.
2. Caravans have a carrying capacity of around 200kg which is usually taken up with all the thing you load into the caravan so having a full say 100L water tank (Fresh or waste) is more than likely going to overload your max load rating

The cost is $500

this doesn’t include a rollaway waste tank (we modify yours) or membership of the association you can join here.