rainwater from a tarpaper roof

[mormor]

I have been told that you shouldn't use rainwater collected from a tarpaper roof to water vegetables. Is this right? Can it be used on flowers?
Does anyone know anything helpful about this?

[mormor]

[tonybloke]

erm, who told you? and what was their source of information?

[mormor]

Good question!  I think I'll ignore it and use the rainwater. Anyway the roof is old, so anything nasty (?) must have been washed away!

[manicscousers]

all the sheds on our allotments have these roofs, we all have water butts under the gutters, always used the water, too late if we shouldn't  ;D