Waste pipe is ABS Plastic (BLACK) or Cast Iorn.

Supply is Copper, PVC (WHITE), or Iorn (rusty!).

Or a mix of all in repipes.

They got all kinds of new stuff now, especially if you are in cold weather.
Lots of stuff comes in rolls now.

I am amazed when I watch the house rebuilding shows on TV!

Mike, who knows all about busting copper pipes in the Mountains in 
Crestline, Ca.

----- Original Message ----- 
From: "Herbert Graf" <hkgraf@gmail.com>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Sent: Monday, December 21, 2009 7:36 AM
Subject: Re: [EE:] PCB Layout and Schematic


> On Sun, 2009-12-20 at 20:05 -0800, Mark Perri wrote:
>> If you pour it down your pipes aren't you going to oxidize all your 
>> copper
>> pipes and dissolve them?
>
> Depends where you are. Where I live almost all residential waste pipe is
> either PVC (most common) or in really old installs cast iron.
>
> Copper is only used for supply, and even that is only on older houses,
> pretty much all newer houses now use PEX for supply.
>
> TTYL
>
>
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