Leaking water tank

[Tracy Paine]

Hi. We have noticed our water tank leaking out at the back near the offside wheel, especially on a slope. Has anyone any advice on how to fix this please?
VW California 2015

 

[WelshGas]

Hi. We have noticed our water tank leaking out at the back near the offside wheel, especially on a slope. Has anyone any advice on how to fix this please?
VW California 2015

If its leaking outside and not inside then work the drain tap On/Off a few times to make sure it is sealing correctly.