There is a right to be allowed to transit in one's country's streets, to breathe pure air, and to have clean rivers. Some call i "constitution", some "basic law" some call it by other names. But those rights are universal, and it's the state which guarantees them, not a petty municipality.
Gunmen in Egypt kill guard outside Niger embassy (Reuters)
from the article: Sewage threatens Jordan River due to imminent closure of treatment plant