MINNEAPOLIS - Many kids who showed up to Webber Pool in Minneapolis hoping to escape the heat over the last three days, were left disappointed.

According to the Minneapolis Park and Recreation Board, the pool had to close Friday for elevated bacteria levels. It hasn’t re-opened.

Touted as the only pool of its kind in the U.S., Webber Pool has no chemicals and uses a natural filtration system with plants.

According to Park Board communications manager Dawn Sommers, levels of the bacteria Pseudomonas aeruginosa peaked following a storm. They believe storm runoff from nearby streets contributed.

Webber Pool closed for a four-day stretch in July after another storm.

Minneapolis resident Kevin Sawyer has been vocal about his displeasure with the pool's unpredictable status.

"We don’t know when we can bring our daughter here," Sawyer said. "The problem is, for the price tag that this amenity has cost, we could have people in the pool right now."

The pool opened in July 2015 at a cost of more than $6 million.

Sommers said the pool is expected to re-open Tuesday.