VW Trooper water tanks

Hi there - I’m slowly getting to grips with my 2006 T5 Trooper.

Can anyone tell me for sure which of the drain taps is the fresh or waste water?? I have 2 on the nearside, 1 towards the front and 1 towards the back.

Thanks in advance.

Sophie

One should be blue - fresh water. The other should be grey - grey waste water.

Welcome to the forum.

Front is fresh, rear is waste water
frederic

Thanks for your replies  
Both taps are black/grey so must’ve been changed at some point.
I thought the front was fresh so good to have that confirmed. Unfortunately the drain pipe for the fresh seems to be blocked so can’t empty and flush the tank. Any tips for unblocking it?! 

Sophie

Are you sure it's blocked? These valves are what is known as 1/4 turn valves, ie, you move them 90 degress to open or close them. Most, however have no end stops so it is possible to turn them beyond 90 degrees.

I'd try this, put some water in the tank so you actually know there's some in there.

Open the valve and see if anything comes out. If not at least try and turn it the other way, if it lets you.

If that fails I'd remove the tap altogether and see if the tank drains then

If not, then it is blocked, this would be unusual and I'd certainly want to find why its blocked and wouldn't consider drinking any of the water until the problem is solved

If it does, then the tap is faulty.

Taps are cheap and easy to get

Hi Ian, thanks for your advice. 

We did end up taking the tap off altogether and nothing came out even after putting quite a bit of water in. I don’t think the water tanks have been used for a couple of years.

I’ve got it booked in for someone to take a look but not till mid October as they are so busy

Good idea.
There are several thoughts on here re fresh water in tanks.
My personal opinion is that we never use this water for drinking.
Several reasons....
Our local tap water is not nice anyway and that's what would fill it pre trip.
By never drinking it it doesn't matter to much what water you put in it, good as possible of course.
Medically I have to drink a lot of water so we carry 6x2 ltr bottles off sparkling water, much nicer to drink than plain.
When you boil sparkling water to make tea, the bubbles disappear and you get normal water.