Gray Creek Water Treatment Upgrades

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Gray Creek is located between Sandy Hook and Tuwanek, and will support the 21,000 residents and commercial customers on the Chapman Water system.

Why Gray Creek?

  • Gray Creek is an existing water source that is connected to the Chapman Water System and can only be used in times of drought.
  • Upgrading the water treatment facility at Gray Creek would:
    • Ensure high water quality, should the source be needed, and
    • Reduce dependence on Chapman Lake water storage.

What's Next?

In 2022, a two year hydrological study was launched to gather creek flow data, update watershed modelling, and assess of the viability of the source through a climate change lens. Design work will be required for upgrading the Gray Creek water treatment facility.


Estimated completion: 2027


Gray Creek is located between Sandy Hook and Tuwanek, and will support the 21,000 residents and commercial customers on the Chapman Water system.

Why Gray Creek?

  • Gray Creek is an existing water source that is connected to the Chapman Water System and can only be used in times of drought.
  • Upgrading the water treatment facility at Gray Creek would:
    • Ensure high water quality, should the source be needed, and
    • Reduce dependence on Chapman Lake water storage.

What's Next?

In 2022, a two year hydrological study was launched to gather creek flow data, update watershed modelling, and assess of the viability of the source through a climate change lens. Design work will be required for upgrading the Gray Creek water treatment facility.


Estimated completion: 2027

What would you like to know about the ongoing work at Gray Creek?

Questions will be reviewed and posted with an answer.

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  • Share Will we be able to draw more water from Grey Creek, or is this project just to improve the treatment of the water? on Facebook Share Will we be able to draw more water from Grey Creek, or is this project just to improve the treatment of the water? on Twitter Share Will we be able to draw more water from Grey Creek, or is this project just to improve the treatment of the water? on Linkedin Email Will we be able to draw more water from Grey Creek, or is this project just to improve the treatment of the water? link

    Will we be able to draw more water from Grey Creek, or is this project just to improve the treatment of the water?

    over 3 years ago

    Hello and great question. This project increases the number of days in a year water can be supplied by Gray Creek. Gray Creek is connected to the Chapman water system and is currently only utilized during times of low creek flows (ie low watershed run off) that is typically associated with a higher quality of raw water that can be safely treated with chlorination.  Upgrading the water treatment facility at Gray Creek provides an extended season of supplementing the water supply drawn from Chapman Creek and Lake, prolonging the stored water supply of Chapman Lake. It would also increase the peak demand capacity of the system.

Page last updated: 25 Apr 2023, 10:45 AM