Davis Junction staff reports filter rehab complete, presents three repair/replacement options and long‑range redundancy plan

Village engineering staff reported that the filter rehabilitation work is complete and that temporary filtration efforts are producing good initial test results. "The temporary filter...worked fine," the engineer said while summarizing inspection results, noting that iron concentrations were low in initial samples after media and nozzle replacement.

Staff walked trustees through three options to address a leak in the filter structure: (1) inject a hydrophilic polyurethane material into the concrete curb to expand and seal leaks, (2) apply epoxy over the curb to try to seal the leak region, and (3) install a trench drain by breaking out concrete to route seepage to existing floor drains (a control strategy rather than a permanent structural repair). The presentation noted that the underdrain area is difficult to access physically, which limits direct repair options.

Engineers recommended evaluating whether to add a permanent filter at the village's second well to provide operational redundancy and reduce reliance on a temporary bypass during future repairs. Staff estimated equipment costs for a new full-size filter could be high (discussed in the hundreds of thousands for some designs) and suggested a phased approach: try options 1–2 first and pursue option 3 only if those fail, while planning a 5–10 year schedule for adding redundancy if the board wishes to pursue it.

Board members discussed the projected media replacement cycle (10–15 years) and whether cutting into the foundation (option 3) would alter that timeframe; trustees asked staff to return with firm cost estimates for the meter project and the filter options when the full board is present.