---
title: "Lesson twenty one: Grey Water and Fresh Water Tanks - Mobilvetta"
description: This article explains how to fill your fresh-water tank and how to empty your grey water tank.
---

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# Lesson twenty one: Grey Water and Fresh Water Tanks - Mobilvetta

## This article explains how to fill your fresh-water tank and how to empty your grey water tank.

 

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![](https://knowledge.traillite.co.nz/hs-fs/hubfs/image-png-2.png?width=336&name=image-png-2.png)

**Fresh Water Tank Instructions**

To fill your fresh-water tank:

- There is a flap on the outside of your motorhome (see photo below)

- Lift the flap and you will see a blue water cap.
- To open the cap, you push it in and turn (cap lock must be in an unlocked position).
- Pop in your hose and fill it up.
- When it's full, water will back-splash back from the inlet.
- Replace the blue cap by again pushing in and turning. You can lock this cap if you wish with your locker key.

**Please Note:**

To drain the water from the fresh-water tank you remove the squab and lift the cover. Unscrew the red cap and will see a handle. Lift the handle and pull up the bung to drain the water from your tank as per photos below:

  ![](https://knowledge.traillite.co.nz/hs-fs/hubfs/image-png-3.png?width=337&name=image-png-3.png)![](https://knowledge.traillite.co.nz/hs-fs/hubfs/image-png-4.png?width=317&name=image-png-4.png)

 

 

**Greywater Tank Instructions **

To empty your grey water tank:

- Locate the brown hose from the plastic container in your boot or locker.
- Locate the greywater outlet on the outside of your motorhome. 

**Please Note:**

- Always empty your grey water after your travels or whenever you can. 
- Please only empty your grey water at dedicated grey water dumping stations. 
- Ensure you rinse the brown hose after you have emptied the tank and keep it in the plastic container. 
- To ensure your grey tank does not start smelling, be careful what goes down your sink drain. Wipe down greasy plates with a paper towel then wash them and don't let food waste go down the sink. 

#### Next Lesson:

[Click here to see the last lesson on TV and the Satellite dish.](https://knowledge.traillite.co.nz/en/knowledge/lesson-twenty-two-tv-and-satellite-dish-in-a-mobilvetta?hsLang=en)

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