The MWRA will be isolating a water main in Medford in order to replace a large valve on Mystic Avenue. The work may result in discolored water in your area for up to three days following the isolation. No disruption to water service is expected. The work is scheduled to begin tomorrow (March 22nd). The entire project should take about three weeks to complete. If discolored water does occur, it will result from a small amount of iron in local pipes. Iron will stain light colored items in your laundry, especially when bleach is used. Residents may want to wait for the water to clear before using it for laundry. Any questions can be directed to Jeff McLaughlin at 617-305-5762 or MWRA’s 24 hour water line at 617-305-5950.