@windwalker Thanks Terri. Then I don't feel bad - I think I do mine about that often. I wonder how much it helps, though, since there is no way to clean the supply pipes.
I have thought seriously about water testing too, in both of my residences. Do you know whether they test the samples from each tap/faucet/showerhead separately, or if they commingle them and give one result for the entire house? And how do they compute the cost, by the specimen or by the job?
Hope your rental rehab is progressing and you and your husband are not too worn out! Sue