Non-point Source Water Pollution in British Columbia

Click here to learn more or read about the main causes of non-point source water pollution in British Columbia caused by:

  1. Land Development: has its greatest effect in the major urban regions -the Lower Mainland, east coast of Vancouver Island, and the Okanagan Valley.
  2. Agriculture: affects water quality in the Lower Fraser Valley, Cariboo, Thompson, and Okanagan basins, and the east coast of Vancouver Island.
  3. Stormwater Runoff and Combined Sewer Overflows: stormwater runoff contaminates receiving waters in all urban areas of the province, but is of greatest concern in the Greater Vancouver and Capital Regional Districts. Combined sewer overflows are a problem in the Burrard Inlet and North Arm of the Fraser River areas of Greater Vancouver.
  4. Onsite Sewage Systems: primarily affects populated inland lakes, enclosed marine bays, and vulnerable aquifers.
  5. Forestry and Range Activities: affects fish and fish habitat throughout the province, and may cause concern in designated community watersheds.
  6. Atmospheric Deposition: includes dustfall, acidic rainfall, and air emissions. Water quality effects are primarily felt down-wind from urban areas, but long-range transport of persistent organic pollutants can occur.
  7. Boating and Marine Activities: primarily affects waters around major commercial ports, boat yards, and poorly-flushed marine and freshwater anchorages.

Click here to learn how Non-point source water pollution has affected British Columbians.

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