Waste Water Treatment

The Penticton Advanced Waste Water Treatment Plant (AWWTP) is an industry leading facility that protects public health and the environment by treating wastewater from residences, schools, hospitals, businesses, and industries. It also accepts wastewater from both private septic systems and the OK Falls treatment plants within the neighboring Regional District area.

The staff at the AWWTP also operates and maintains 10 waste water pump stations located throughout Penticton.

The AWWTP has been located at its current site 459 Waterloo Ave since 1960 and has been expanded and upgraded a number of times. The plant currently serves a population of approximately 33,500 and on average treats 13,000,000 L/day of waste water.

The AWWTP just underwent a major upgrade, which was completed in 2012. Construction started in late 2009 to replace outdated equipment processes and increase plant capacity from 18,000,000 L/day to 27,000,000 L/day. The value of the upgrade including engineering was approximately $24,000,000.

The updated plant also embraces a number of environmentally responsible plant upgrades:

  • Plant and process heating using wastewater effluent;
  • Elimination of chlorine and replacement with ultra violet for disinfection;
  • Improved solids handling that reduce GHG emission from transport to the landfill and;
  • An extension of reclaimed water pipe-lines to service parks and schools at the south end of the City.

Waste water undergoes primary, secondary and tertiary treatment at the City of Penticton's AWWTP. Treatment processes include fine screening, primary clarification, biological nutrient removal (BNR), secondary clarification, filtration and ultraviolet disinfection prior to discharging into the sensitive and high use recreational receiving waters of the Okanagan River.

In addition, from April to October, reclaimed water is used to irrigate large grassed areas at City parks, schools fields and the Penticton Golf & Country Club.

The bio solids that result from treatment plant process are fermented, digested, thickened and dewatered; they are then trucked to Campbell Mountain Landfill where they are composted into Class A compost.

More Information

For more information on the Waste Water Treatment Plant, click on

(updated May 16, 2014)

Contact the Advanced Waste Water Treatment Plant for more information.