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About Hanford


Photo of the 200 West Pump and Treat Facility200 West Area Pump and Treat Facility

The groundwater treatment project includes a number of injection and extraction wells feeding five pump-and-treat facilities in the Hanford Site 100 Area near the former reactors, as well as a state-of-the-art groundwater pump-and-treat facility in the 200 West Area, which has a maximum capacity to treat up to 2,500 gallons of water per minute.

Since the first pump-and-treat systems began in the 1990s, several billion gallons of contaminated groundwater have been treated. The primary focus of the project today is a 60-square-mile area containing billions of gallons of contaminated groundwater. The aim is to remove chemical and radiological contaminants from the groundwater. For more information about groundwater treatment, check out the Soil and Groundwater Annual Reports

Commonly sought Hanford Environmental Information System (HEIS) well-monitoring data, tracking contaminants from about 1950 to the present, can be accessed via the Environmental Data Access tool.

Here are the groundwater pump and treats by area:

  • 200 West Groundwater Pump and Treat System
  • 100-HX Pump and Treat (near H Reactor)
  • 100-DX Pump and Treat (near D/DR Reactors)
  • 100-KW Pump and Treat (near K Reactors)
  • 100-KX Pump and Treat (near K Reactors)
  • 100-KR4 Pump and Treat (near K Reactors)
DXPumpTreat HXPumpTreat
100-DX Pump and Treat
  100-HX Pump and Treat
Last Updated 10/26/2023 12:41 PM