What did you do to your van today?

[Pudsey Bear]

Friday filled fresh water tank with water and the purification stuff and fed it through system, today flushed it all out with fresh water ready for 1st trip this year up to Inverness.
Is this annual flushing really worth the effort seeing as we dont drink from it anyway?
Also removed leisure battery to try to pulse charge it - last saloon before the bin.

We did it years ago, but not since. I have a dicky tum at the best of times, but nothing from the tank has upset it, (in 12 different vans) as we always boil for drinks and cooking, we buy (a LOT) of water for drinking.