The boil advisory issued Thursday by county and city officials still remains in effect for some area water customers. The following areas will be under the alert for another day or two: All streets east of Underwood, the north end of Zanesville, the west end of Zanesville, and everyone west of Woodlawn Avenue in the south end of town. All residents in those areas are advised to continue to boil their water until further notice. Boiling requirements: two minutes on a stove. Water samples were sent Friday to be tested, those tests should be determined by Sunday afternoon at the earliest.