Orthos Chosen over Block & Triangular Lateral

Orthos Continues to Empower the
“Triangle of Reliability” in Omaha

Orthos Chosen over Block & Triangular Lateral

Orthos Liquid Systems, Inc., (Orthos) the leading manufacturer of nozzle-based filter underdrain systems in water/wastewater treatment, continues to empower the “Triangle of Reliability” built by the Metropolitan Utilities District (MUD) for water customers around Omaha, Nebraska.


Platte West WPF
Platte West WPF

Since the 1920s, MUD has provided high quality drinking water for metro Omaha. MUD operates a water production facility (WPF) by the Missouri River northeast of Omaha and another on the Platte River south of the city. However, a third WPF was needed to keep up with twenty-first century demand.

Commissioned in 2008, the Platte West WPF, located west of Omaha, created the Triangle of Reliability, surrounding the metro area with abundant drinking water system capacity for at least the next 30 years.

Twenty-four (24) 36′-0″ x 20′-0″ conventional media filters provide 104 million gallons per day of capacity. Filtered water quality is excellent, with final product meeting or exceeding all federal and state standards for safe drinking water.


Water Production Facility
Platte West WPF

Suspended monolithic filter underdrains by Orthos were chosen for design by HDR, Inc., over block and triangular lateral types because of the following compelling benefits:

  • Structurally-superior concrete construction
  • Construction is less dependent on hard-to-control installation practices
  • Excellent filter and backwash distribution characteristics

Further, at the end of equipment life cycle, in contrast to a costly lateral underdrain demolition and replacement, nozzles are economically and easily unscrewed and exchanged–the monolithic floor remains part of the civil structure. Thus, facility life cycle cost analyses with appropriate 50+ year terms will routinely identify monolithic underdrains as the prudent choice over block or triangular lateral systems.

We are honored to be a key part the Triangle of Reliability for the Metropolitan Utilities District,” said Mark Asbrey, President of Orthos. “Our resilient monolithic filter underdrain system offers ongoing value to our clients for lifetimes to come.”

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Remember Orthos’ HUGE life cycle cost benefits– At the end of the filter’s life cycle (~25 years), in contrast to a complete plastic block or folded sheet metal underdrain overhaul, nozzles are simply replacedpotentially saving $Millions.

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