Engineering team proposes new pressure filter design to save $7M on water treatment plant

During the January 22, 2025, Minnetrista City Council Work Session, discussions centered on potential cost-saving measures for the city's water treatment facility. City officials explored various filtration options that could significantly reduce project expenses while maintaining water quality standards.

One of the primary topics was the consideration of switching to a gravity filter system, similar to what is currently used in another facility. This change could potentially save the city between $2.5 million and $3 million by eliminating the need for a clear well and high service pumps. However, officials noted that this option would also remove some storage capabilities, which could impact future water supply needs.

Another alternative discussed was the implementation of pressure filters, which are more compact and could further reduce costs by an estimated $5 million to $7 million. While this option presents a more aggressive treatment approach, it requires careful piloting to ensure effectiveness. City officials proposed using small pumps in newly drilled wells to conduct pilot tests, allowing them to assess the viability of this filtration method before committing to a full-scale design.

The council emphasized the importance of balancing cost savings with the need for reliable water treatment solutions. The discussions highlighted the city's ongoing efforts to manage resources effectively while preparing for future demands. As the council continues to evaluate these options, residents can expect updates on how these decisions will shape the community's water infrastructure and overall service quality.