(OLNEY) The City of Olney Water Department will begin its water hydrant flushing this Sunday night at 9:00 and continue through the overnight hours. It’s at this time that the residents of Olney may experience low water pressure and/or some water discoloration while the flushing is taking place. However, the water service will return to normal once the flushing is completed next Monday morning. The Water Department also reminds customers that the water distribution system is still using free chlorine for its water treatment. The City of Olney and its Water Department appreciates the patience and understanding of all City of Olney water customers while the maintenance process continues throughout the City over the next week or two.