"cojack" wrote in message
In common with many others I have installed a waterbutt via a
diverter.
This is also ducted into 3 others.
However, I have over several years I have two 210 litre butts
splitting.
What do members think the life of a butt should be?

Here in Australia where plastic are sold in a range of sizes from
waterbutt sized to household water supply sized, I'd expect them to
last at least 15 years but more like 20 (with probably a guarantee
period of 10 years).