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The original item was published from 11/4/2016 2:36:00 PM to 11/4/2016 2:36:51 PM.

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Water and Sewer Division

Posted on: November 4, 2016

[ARCHIVED] Water Department Latest Manganese Level Information

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As of Tuesday, November 1st, the latest manganese finished water results sampled was at 0.30 mg/L, (300 ppb).
On October 14th, a treatment process was started with an acid compound to break down the manganese biofilm at our Home Farm 6-1 and 6-3 Wells. These two wells contain the highest level of manganese and are the heart of our manganese problem. They cannot be turned off indefinitely, due to system demand, but we limit their flows as much as possible.
Our finished water sampled on October 18th was at 0.13 mg/L, (130 ppb), with the above referenced wells turned off for the treatment process. After a one-week period, which the chemical required to react and water pumped off to waste, we needed to temporarily restart the wells to mix into the system to get a more accurate picture of the process. It is normal to have elevated readings initially because of the agitation caused by the process. We have received a reading of 0.51 mg/L, (510 ppb), on October 25th for finished water as a part of this process. We are running to waste on one well presently, and minimizing the use of the second well as much as possible. We are hopeful levels will lower as this procedure continues in the upcoming weeks.

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