Circulation systems intended to filter water at the Nebraska City swimming pool fall short of regulations, a pool consultant told city commissioners in 2009.
Sediment and buoyant solids that reach the gutter of the pool are supposed to travel to a drain where they are screened or directed to a filter, but Dave Henke of JEO Consulting Group said the water recirculation is too slow.
Henke did not identify any immediate health risk, but said regulations that specify a quicker rate of water flow are intended to decrease the chance of diseases in the pool water.
Piping and filters for the recirculation system were installed during a 1994 upgrade. Henke was unable to predict how long they would continue to function.
"It was not possible to pressure test the piping for fear of major breakage and not being able to find replacement parts," he said.
He said replacement of the recirculation system for the main pool and wading pool will include a building or shade shelter to house equipment.
The cost to improve the recirculation system is estimated at $55,000 for the main pool, $36,000 for the wading pool and $38,000 for equipment housing.
The $129,000 price tag is nearly 15 percent of total estimate to upgrade the pool.
Henke told city commissioners it would cost $868,000 to replace diving towers, replace main drain piping, replace the existing gutter system and renovate the bathhouse.