 Sayen says the 4,300 self-surveys submitted by residents so far show, quote, a couple handfuls of lead service lines right now. Each resident who tests their own pipes saves taxpayers between $600 and $700, Sayen said. I think it's really, really important that we do everything we can to educate as many people as possible. This is a simple test. It's a scratch of a pipe and a tap of a pipe to determine whether or not you have lead.