1. Keystone Laboratories
3012 Ansborough Ave, Waterloo, IA 50701
Coordinate: 42.47067,-92.37705
Phone: (319) 235-4440
2. Crowns By Box
1901 W Ridgeway Ave, Waterloo, IA 50701
Coordinate: 42.46848,-92.39291
Phone: (319) 234-2277
3. Quad City Testing Laboratory
403 Sycamore St, Waterloo, IA 50703
Coordinate: 42.49968,-92.3373
Phone: (319) 232-8084