Seeing plastic debris stuck in our shower faucet valve second time in a week. Caused it to not close completely and leak. First picture shows the white plastic crumpled and stuck in the valve (like a foot thru a door that prevents it from closing completely).
What is the likely source of this? What's a good way to isolate this if possible?
Additional data points:
We had a new Rheem water heater installed last year after our 1993 water heater leaked last year. I see some talks about '93 - '96 dip tubes being made of plastic that tend to disintegrate; but even after a year??
This is in the San Diego, Carmel Del Mar area and happened on the first shower from the house water mains, so I'll check with the city too.
The plastic is medium hard - kinda like a hard plastic bag (but not like hard molded plastic)