Fill a clear jar with water. Let it sit for 24 hours. Don’t touch it. Don’t even look at it suspiciously.
In the morning, check the bottom. See any grit? That’s sand, rust flakes, or pipe crud. See a slime layer? That’s bacteria growing. Time to call a plumber and scream into a pillow.
This test is a reality check. If your water leaves a ring in the toilet, it’ll leave a ring in your stomach. Gross but true.
