Black Deposit In Tap.

[mikeG 16]

The cold water tap in the bathroom keeps getting a  black

deposit attached on the inside. If you wipe it off, it gradually

reappears. Some sort of chemical in the water? Anyone else

had this or is it just us?

[Annie Bynnol 612]

Ask a local  plumber in your area as "black deposits" are a common problem in areas with a  high manganese content in the local limestone. Sheffield water is way below the threshold. Some areas with bore hole supply and/or in the east of the county might 

also see higher levels.

 

There is a black algae that can form, which is a domestic problem and easily remove with regular application around the tap  of dilute  bleach and rinsing thoroughly before any cats, kids, dogs or people drink from it. 

Always disconnect the "temporary" link which connects the cold water supply and the central heating top up valve.

 

 

 

 

 

[apelike 10]

IIRC there was another thread on this a few months back so have a check on that.

[jane2008 15]

Mine has been exactly the same since the house was remondernised 12 years ago and they put in a combi boiler and removed the water tank.

[speleo1 10]

I was told it was those flexible couplings breaking down on the inside causing the black bits,we have black bits in bathroom sink and toilet with flexible pipes,non in the bath or kitchen without the Flexi pipes,

[mikeG 16]

Thanks. Will have a look at the pipes.

[alarmingmark 32]

On 18/07/2020 at 14:20, mikeG said:

The cold water tap in the bathroom keeps getting a  black

deposit attached on the inside. If you wipe it off, it gradually

reappears. Some sort of chemical in the water? Anyone else

had this or is it just us?

What area are you in ?

[mikeG 16]

12 hours ago, alarmingmark said:

What area are you in ?

Buckley, North Wales.