cess·pool 
/ˈsɛsˌpu:l/ noun
plural cess·pools /ˈsɛsˌpu:l/ noun [count] 1 : an underground hole or container for holding liquid waste (such as sewage) from a building 2 : a place or situation that is very dirty, evil, or corrupt
▪ The region had become a cesspool of pollution. ▪ a cesspool of corruption —called also (chiefly Brit) cesspit
▪ The region had become a cesspool of pollution. ▪ a cesspool of corruption —called also (chiefly Brit) cesspit
