Urinetown

In a Gotham-like city, a terrible water shortage, caused by a 20-year drought, has led to a government-enforced ban on private toilets. The citizens must use public amenities, regulated by a single malevolent company that profits by charging admission for one of humanity's most basic needs.

Inspired by the works of Bertolt Brecht and Kurt Weill, Urinetown is an irreverently humorous satire in which no one is safe from scrutiny. Praised for reinvigorating the very notion of what a musical could be, Urinetown catapults the "comedic romp" into the new millennium with its outrageous perspective, wickedly modern wit, and ability to make audiences think about society, themselves, and theatre itself all while laughing. 

https://en.wikipedia.org/wiki/Urinetown