Source control

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Our Wastewater Source Control Program is a pollution prevention strategy which aims to protect our environment and watershed by reducing  industrial, business, institutional and household chemicals from being discharged to the city sewer system and eventually back into the Lake.

As Okanagan Lake supplies drinking water to more than 60,000 residents in the Kelowna area, it is important to keep specific chemicals out of our precious water supply.

Additionally, some chemicals, drugs, and pharmaceuticals cannot be treated or removed at the City's Wastewater Treatment Facility (WWTF) and may affect treatment processes.


What can't go down the drain?

The  Sanitary Sewer Storm Drain Regulation Bylaw  details the specific wastes that are prohibited from being discharged to the sewer. Hazardous Waste should never be disposed of down the drain. See the  Regional District of Central Okanagan or Recycling Council of BC  for further information on recycling and disposal options for a variety of hazardous wastes.

The BC Medications Return Program provides detailed information on where to properly dispose of unused pharmaceuticals and medications.

Did you know?

  • Some drugs and pharmaceuticals cannot be treated or removed at the WWTF, and should never be flushed down the drain or toilet.
  • Cooking oil & grease are the major causes of sewer blockages in Kelowna; it costs more than $60,000 annually to clear these blockages in our sewers.

Information for residents

Information for businesses