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Old 02-22-2020, 06:30 PM   #1
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2015 19' International
East Woodstock , Connecticut
Join Date: Apr 2016
Posts: 13
Black Tank leaking

I just noticed that my 2015 19’ International has a small leak from I’m guessing my black water tank. As I emptied I noticed drops of water falling from the under side of the trailer appx. 10” to the right of the black water valve. The bottom of the trailer is sealed with sheet metal and plastic, so it is difficult to see exactly where the water is coming from. When I empty the black tank the leak appears to stop. Is the black tank above the plywood floor? Will this leak damage plywood or other components until it fixed. Is this an Airstream dealer only repair? It appears that the bottom of the trailer will need to be opened. Thanks for any advice.

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Old 02-22-2020, 07:37 PM   #2
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2014 23' International
Dadeville , Alabama
Join Date: Oct 2015
Posts: 3,792
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Tank is below the floor. Dropping the bellypan involves filling out some rivets. It’s not hard but if you are not comfortable with basic tools or feel you could fix the tank if you found the problem it’s best to seek professional help.

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Old 02-22-2020, 09:17 PM   #3

2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 14,604
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We had a leak in the grey tank valve, squoze out of shape right from the beginning. Cut a large access hole in the bellypan to change it out. This was a few years ago...not sure I'd start it again now-a-days...

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Old 02-22-2020, 09:35 PM   #4
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1995 25' Excella
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Put water and two different colors of food coloring in each tank. Catch the drip and see what color it is.
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