On Wed, 08 Mar 2006 15:24:24 GMT, wrote:

On 8 Mar,
Guy King wrote:

The message .com
from "Alan" contains these words:

Black stains around water services
I've not idea what it is or if it's harmfull, but it's easily removed.

May well be manganese salts.

Black mould. Difficult to remove, and it /always/ comes back. I suspect its
spores are harmful to asthmatics/hay fever sufferers.

I think that's what mine was.

It seemed to be growing on the plastic "aeration" inserts many taps
have nowadays. Once it starts it's hard stop it. Probably impossible
if you have black mould growing elsewhere in the bathroom.

DG