Breaks in two sewer pipes near the Indian Rocks Causeway poured at least 200,000 gallons of sewage into the Intracoastal Waterway on Monday and early Tuesday, Pinellas County officials said. Officials said a 16-inch steel pipe broke around 4 p.m. Monday while a contractor was demolishing the McKay Wastewater Treatment Plant on 14800 118th Ave. N in Largo. Sewage spilled into the Intracoastal Waterway for almost three hours while county crews repaired the break. The wastewater was later diverted into a manhole until the leak was stopped at 1:30 a.m. Tuesday. The leak in the second pipe was repaired by 3:45 p.m. Tuesday. Officials recommended that residents in Belleair Beach and Indian Rocks Beach refrain from water activities on the east side of the causeway until water test results return today and Thursday. Pinellas County Utilities district manager Steve Soltau said caution signs were posted at Belleair Beach and Indian Rocks Beach, at local marinas and at Shipwatch and Indian Springs Condominiums. The Florida Department of Environmental Protection is investigating the spill.