Seattle_helo
New Member
Have a small, 1500 sq. foot home in north Seattle. Recently had all of the original 1949 supply lines replaced with 3/4" type-L copper fed by a new 1" line from the meter. Made a huge difference in flow rate. Wish I had done it sooner. The guys who did the work mentioned that some of the waste lines looked fine and others were not great. I've been down in the crawl space a lot lately doing various things and I've looked at all of it as best I can. It appears that galvanic corrosion is taking place between some of the galvanized and cast iron connections. How bad does this stuff look to you pros? How much time, if any, do I have left with this system?