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Water Main Flushing Schedule Update

Water Main Flushing Schedule Update

Through weekly monitoring of the City’s water distribution system, manganese levels above the source water secondary maximum contaminant level (MCL) of 50 parts per billion (ppb) have been detected at the sampling station located on Rockwell Drive in East Davis (SS-037).

The secondary regulatory standard for manganese in source water (50 ppb) is established to address issues of aesthetics (discoloration), not human health concerns. Manganese in our source water is below the secondary MCL. It is suspected that the discolored water and high level of manganese is due to legacy manganese sediment and scale existing in and on the distribution piping system. The City will be modifying the current flushing schedule to address the area, North of Covell Blvd. and East of Pole Line Rd., beginning on January 31, 2017 (See Area 5 of the Water Distribution System Flushing Plan Map).

If you experience discolored water, please flush your service line from a hose bib for a short period to see if the water clears up. If the water does not clear up, please contact the Public Works Office at 530-757-5686 during regular business hours.  After business hours, contact the non-emergency police number at 530-757-5400 for assistance.

For more information on manganese you may visit: http://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/Manganese.shtml

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