Starting Monday the Rockford Fire department will be testing fire hydrants. If you are bounded to the north by New Milford Avenue, to the east by 20th Street, the city limits to the south and to the west the Rock River then your water will be discolored. If you are bounded in by Elmwood Road to the north, to the east the Rock River to the south by Custer Avenue and to the west North Central Avenue you will also be affected. Water is not a health hazard but can stain porcelain or laundry. Testing will be done daily from 9 a.m. to 3: 30 p.m.