Last night I noticed some small black specks in my cup of water. Odd.
A few minutes later, we noticed a rushing water sound after we use water. The more water, the longer we hear it, but it gradually stops, usually in under a minute or two (the more water we use, the longer it take). It's definitely water in the pipes, because I can feel the vibration in the shut off valve that's inside until the noise stops.
I don't know if these are related, but the timing is suspect! Pressure regulator? We have CPVC pipes, so I don't think it's a kink.
We're of course leaving on vacation in a few days...