On Thursday The Dalles Public Works Department will be conducting maintenance on a pressure reducing valve which could result in discoloration of the water supplied to some customers.  The discoloration is caused by air bubbles or sediment which is dislodged when flows in the pipes change.  The discolored water does not pose a health risk.  However, you might want to flush the pipes by running the water for several minutes before drinking or washing to avoid any adverse tastes or discolorations.  If the water does not clear, contact the Public Works office at (541) 296-5401.