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Old 08-12-2020, 03:42 PM   #1
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Join Date: Jul 2020
Posts: 208
Empty of water holding tank

Is there a way to view the amount of water in the fresh water holding tank with using the inside indicators?

Also can the fresh water tank be drained without using the water pump?
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Old 08-12-2020, 03:58 PM   #2
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Location: Small Town
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Yes, there is tank level page on the Mplex and its 103 Gallon Tank.
There is also a 1-1/4" low point gate valve, just behind the left side lower panel of the water bay.
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Old 08-12-2020, 05:59 PM   #3
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Or just go open compartment door and look at tank.....
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Old 08-17-2020, 02:58 PM   #4
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Location: Pearl River, Louisiana
Posts: 842
To drain it go to passenger side and you may have the door with the latches underneath. Open door, tank is behind white panel and drain is on the tank. You will see the valve. FYI it is a SLOW drain!
Karen and Rick
2020 Forester 2251SLE
Previous: 2018 Berkshire XL 40C
2011 Honda CR-V toad
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Old 08-24-2020, 07:15 PM   #5
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On my tank and a lot of other tanks, the drain doesn’t empty the bottom quarter of the tank. That means you can’t access the bottom quarter of the tank either.

I installed a pipe to let the water pump access the bottom of the tank, and explained how I did it, with photos, at

Gordon Sick, Calgary (51° North)
2015 Berkshire 34QS
The Manual I wrote for our 34QS:
Toad: 2019 Ford Ranger XLT 4x4; Formerly: 2005 Acura EL (aka Honda Civic)
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tank, water

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