1. Monticello Sewage Plant 1105 E 1st St, Monticello, IA 52310 Coordinate: 42.23808,-91.17344 Phone: (319) 465-3731
2. City Of Monticello 201 E South St, Monticello, IA 52310 Coordinate: 42.23235,-91.18817 Phone: (319) 465-6435