Sanitary Sewer

Everything you put down the drain or toilet has to go somewhere.

Whether you're flushing the toilet, washing clothes, having a shower, or washing the dishes, we send a significant amount of water down the drains in our households each day. The water and other materials that go down the pipes are processed and then released back into the environment.

Find out more about what happens to your wastewater.

What happens when you flush

Sinks and toilets are not intended to be disposal systems for garbage or chemicals. 

Do not flush these items down the toilet or sink

  • Fats, grease and food
  • Baby wipes and other disposable cleaning cloths
  • Disposable mop cloths and mop pads
  • Condoms
  • Pads, tampons (and applicators)
  • Dental floss
  • Hair
  • Plastics
  • Paper
  • Oils
  • Chemicals
  • Paint
  • Pharmaceuticals
  • Pesticides or herbicides

For better ways to dispose of these items, visit the West Vancouver garbage page.

Sanitation System Infrastructure 

The district’s sanitary sewer system is comprised of hundreds of kilometres of sanitary mains and thousands of service connections. Here are some of the numbers:

  • sanitary sewer mains: 340 km
  • sanitary service connections: 12,727
  • sanitary manholes: 4,277
  • sewer lift stations: 57
  • wastewater treatment plants: 1 (Citrus Wynd Sewer Treatment Plant)
  • grinder pumps: 208

Sewage Treatment

In response to new federal and provincial wastewater regulations, Metro Vancouver is moving to replace the existing primary wastewater treatment plant with the Lions Gate Secondary Wastewater Treatment Plant by 2020.

Lions Gate Wastewater Treatment Plant


Flushing items that aren't supposed to be flushed can cause major clogs, breaks or overflows further down the line or at the pump stations and waste water treatment plant.

The municipality must make expensive repairs that could have been avoided if these items were disposed of properly.

The only acceptable thing to flush down your toilet is a small amount of toilet paper.

Keeping it Flowing

Learn more about our sanitary sewer assets and how they're managed.

More information