The house appears to have copper throughout the house. Everywhere that I can see, at least, is copper. I replaced two of the shower heads when we moved in so I know that it’s not the fixtures themselves that are clogged.
I checked the numbers on my water heater against the class action lawsuit documents and it isn’t listed as one of the affected water heaters. Also, I saw no evidence of debris when I replaced the two shower heads.
I suppose that makes it likely that there is a restriction in the copper pipe from the heater. Are there any methods for a plumber to remove or clean out the restrictions without replacing all of the pipe?