Agenda - Council - 05/07/2019 - Special

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After we recieved the information on our managnese levels, we programmed our system to utilize the wells with the lowest manganese level to pump first, then to add capacity from the higher manganese level wells as needed. The wells with the lower manganese level could supply enough water to meet demand in colder/wet weather, but not over the summer months when turf irrigation significantly increases demand. Another factor to consider is that our wells with low manganse levels produce water with high iron content so while we are solving one issue by reducing manganse concentrations, we are creating another issue by increasing iron concentrations. The utility department fields numerous complaints about the iron in our system on an annual basis,especially during times of low water usage. Water high in iron is orange colored in appearance and stains clothing, sidewalks and buildings, and plugs water meters shorting their replacement cycles. While water softeners can help remove manganese, many people choose to not connect their water softener to pipes leading to faucets used for drinking water due to the taste. Short, medium, and long-term options for addressing this issue willl be presented by Staff during the meeting. Funding Source: Water Utility Funds will pay for the postage to mail the letters. Recommendation: Based on Council Discussion Action: Based on Council Disscussion Draft Letter to Residents Well Data Manganese Fact Sheet Home Water Treatment Attachments Form Review Inbox Reviewed By Date Bruce Westby Bruce Westby 05/02/2019 10:49 AM Diana Lund Diana Lund 05/02/2019 11:04 AM Kurt Ulrich Kurt Ulrich 05/02/2019 01:44 PM Form Started By: Grant Riemer Started On: 04/30/2019 01:03 PM Final Approval Date: 05/02/2019