Toho reservoir and water treatment facility

The Toho Reservoir and Water Treatment Facility project is a comprehensive joint effort between Toho and Osceola County to capture stormwater, reduce flooding, improve water quality in lakes, and provide alternative water supply to support the county.

Water from the reservoir will be treated to produce a new water supply for irrigation and possibly, even meet future drinking water needs. The water treatment facility will only treat water from the reservoir.

Water supply and benefits

The 400-million-gallon reservoir is permitted to provide 8.2 million gallons daily of water captured from storm and surface water to supplement Toho’s reclaimed water supply. It will also have a positive environmental impact.  Up to 25,500 pounds of Total Nitrogen and 2,700 pounds of Total Phosphorous will be removed annually from storm and surface water prior to discharge into Lake Toho, Lake Kissimmee, Lake Okeechobee and other environmentally sensitive water bodies. Having the reservoir protects and preserves our potable water resources.

Benefits at a glance

  • Provide an environmentally friendly water supply
  • Assist with flood control
  • Reduce algae blooms in our waterways
  • Provide recreational opportunities
View of the Toho reservoir.
Map shows image of the reservoir along with the locations of the water treatment facility and the intake pump stations. The water treatment facility will be located on the southern side of U.S. 192 near Fortune Road. The intake pump stations will be located near Mill Slough, East City Ditch and off Idora Boulevard..
Map shows aerial of the reservoir along with the locations of the water treatment facility and the intake pump stations. The water treatment facility will be located on the southern side of U.S. 192 near Fortune Road. The intake pump stations will be located near Mill Slough, East City Ditch and off Idora Boulevard. (Gráfica en español)

Timelines

The water treatment facility will have three intake pump stations. These stations will pump water from the reservoir to the treatment facility.  Please see the construction timelines below:

  • Water treatment facility – Construction has not begun. Expected to be operational by end of 2028
  • Idora Boulevard intake pump station – February 2026 and completed by first half of 2028 (See rendering: English / español)
  • Mill Slough intake pump station – February 2026 and completed by end of 2028
  • East City Ditch intake pump station – timeline to be determined 

Please keep in mind, timelines are subject to change. 

Image of technician at Toho Reservoir standing behind vehicle.

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