The Smithville Water Department began flushing the city’s fire hydrants as part of routine maintenance yesterday.According to city officials, the program is an integral part of on-going efforts to deliver the safest and highest quality water possible to residents.The hydrants must be flushed routinely to insure the cleanliness of the water distribution system’s piping.The flushing process washes sediment from the main lines, helps maintain chlorine residuals throughout the distribution system, and verifies the proper operation of hydrants, thereby improving the quality of water coming from your tap.The Smithville Water Department staff will systematically open and close fire hydrants on one section of the water main at a time, letting the water run at a high velocity until all sediment is washed away, and the water is clear.If workers are flushing the hydrants in your neighborhood, avoid using the water in your home until the flushing is complete.If you encounter a crew flushing hydrants, drive carefully and treat them like any other road construction crew.A temporary reduction in water pressure may occur during flushing, and customers may notice some discoloration in the water during and immediately after flushing.The discoloration is caused by iron or manganese particles being dislodged from the water main.The discolored water is reportedly not a health hazard, but may stain porcelain and laundry.If you experience a discoloration, turn the faucet off and wait several minutes, then run the cold water for a few minutes to allow fresh water to fill your pipes.If discoloration continues for more than 24 hours, call Smithville City Hall at 615-597-4745.The discoloration only affects the appearance of the water, and does not affect the quality of the water.The process is expected to take several days, and will cover certain sections of the city each day.