Pee Tax

There was a Pee Tax in Ancient Rome. Roman Emperor Vespasian imposed a urine tax on the sale and distribution of urine from Rome's public urinals (which apparently had resale value). The urine collected from these public urinals was sold as an ingredient for several chemical processes. It was used in tanning, wool production, and also by launderers as a source of ammonia to clean and whiten woolen togas. The buyers of the urine paid the tax.