In Urinetown the Musical, a drought somehow leads to a situation in which city dwellers cannot pee for free.
However, in some part of Japan's history, you could demand a fee for your pee:
"Urine — the less prized waste — was still a marketable commodity. Because of its lower value, tenants, who owned the rights to their urine, sold it to a group of merchants who were not part of the fecal waste guild."
I guess I'll just relax
and pay my sewer tax.