Posted on Tuesday June 25, 2019
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From 6/19/2019 - 6/23/2019, areas of Mallory Valley's water supply had discolored water caused by an event that occurred with our water supplier, Harpeth Valley Utilities District. During this event, Mallory Valley's crew was hard at work flushing our water lines and conducting bacteriological tests (all have been negative) making sure your water was safe.
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Below is a statement from Harpeth Valley Utilities District, our water provider:
STATEMENT FROM HARPETH VALLEY UTILITIES DISTRICT
UPDATE: JUNE 21, 2019 AT 6:00 PM CDT
THE DISTRICT CONTINUES TO MONITOR AND TEST SAMPLES OF OUR WATER DISTRIBUTION SYSTEM IN AREAS NEAR HILLSBORO ROAD AND MURRAY LANE IN WILLIAMSON COUNTY, WHERE TEMPORARY WATER DISCOLORATION HAS OCCURRED FOLLOWING THE PLACEMENT OF A NEW LARGE DIAMETER WATER TRANSMISSION MAIN.
BACTERIOLOGICAL TEST RESULTS CONTINUE TO SHOW NO MICROBIAL CONTAMINATION OR HEALTH RISK TO THE WATER. SAMPLING AND TESTING SHOW A DECREASE IN IRON AND MANGANESE, WHICH ARE MONITORED SOLELY FOR AESTHETICS AND POSE NO HEALTH RISKS TO CUSTOMERS. THE DISTRICT WILL CONTINUE TO MONITOR AND TEST SAMPLES IN THE IMPACTED AREA OF THE WATER DISTRIBUTION SYSTEM.
Harpeth Valley Utilities District regularly invests in infrastructure improvement projects to ensure the safe, reliable delivery of water to its customers. One such project is currently underway near the Hillsboro Road and Murray Lane area in Williamson County, where on Wednesday morning we placed a new large diameter water transmission main in service. This improvement changed the direction and velocity of water flow in these areas of the District’s water distribution system, which stirred inert sediment material within the District’s existing water pipelines in this area, causing water discoloration.
We immediately began flushing the system to remove discolored water, and any remaining discolored water should be cleared within the next 24 to 48 hours. Our initial laboratory tests indicate the discolored water is due to elevated iron and manganese which are monitored solely for aesthetics and pose no health risks to customers. The disinfectant levels have remained consistent and indicate no bacteriological contamination. We are continuing to monitor and test water quality, and will continue to keep our customers apprised of results.
We are committed to communicating openly about this situation, and have been in constant communication with customers who have inquired about the temporary discoloration to address any questions or concerns.