Fredxx wrote:

On 02/05/2020 13:57:18, Roger Hayter wrote:
Dave Plowman (News) wrote:

In article ,
Robin wrote:
On 02/05/2020 13:13, Dave Plowman (News) wrote:
In article ,
Roland Perry wrote:
No big deal to connect lead to copper using solder. For a decent
plumber.

The consensus is that this is now banned for potable water.

They have banned a soldered joint in a lead pipe carrying potable water?

Does Trump make the rules in the UK?


If there's lead in the solder, yes. And in Regulations made in 1999 so
you know which government to slag off.

Lead free solder has been around for ages.

I ask again. You have perhaps miles of lead pipe carrying potable water. A
single solder joint - even with lead solder - is going to make a
difference?

I don't think lead free solder will work. (It doesn't work for most
things!) And perhaps a fresh lead surface will dissolve more for a few
decades than the coated internal lining of the whle of the old pipe, I
don't know but it is quite credible.

I asked another poster who made the assertion "Law prohibits 'sweating'
lead to copper" a similar question.

It seems you can use lead free solder on lead:

https://www.wras.co.uk/resources/int...tallation/i25/

Given the way tin alloys with lead I'm not surprised.

I note that reference confirms my supposition that a fresh lead surface
leads to increased lead levels in the water. I note that lead free
solder may be permitted, but I look forwarded to hearing from anyone who
has successfully made a wiped joint with it.

--

Roger Hayter