"REP" wrote in message
ps.com...

JoeSpareBedroom wrote:


If the entire supply line (from water main to faucet) is *really*
plastic,
then it sounds like there's some sort of corrosion already within the
faucet. I'd call the manufacturer. Are you positive there's not even a
short
length of iron pipe just before the faucet, or even a few feet away,
perhaps
in the wall or in the basement?

There is some copper in the basement, but this only happens to the one
faucet and only immediately after the water is turned on.

The faucet came with flexible mesh/metal hoses already attached that
hangs down about 8-12 inches from the base of the faucet. These hoses
were attached directly to the plastic. There is also a metal shut off
valve at that joint, for both Hot and Cold pipes.



All I can do is relate this to my only similar experience. A bathroom faucet
in my previous house would produce brown water in the morning, almost
immediately upon turning it on, and it lasted about 2 seconds. From the
basement, I could see that there was copper pipe, and there was copper
coming out of the wall. What I could NOT see was that there was a short
length of iron pipe down lower. Whoever did the work installed a board
between the basement rafters, which hid the junction between the iron &
copper pipes. When the iron pipe was removed and replaced with copper, the
problem was gone.

You have to eliminate one cause at a time. The cheapest and easiest
experiment would be to change the flexible hose for the cold water. It's
also possible that the faucet itself has some sort of internal problem. It
wouldn't be the first badly designed product, especially considering how
much crap is made in China these days.