Coquitlam’s sanitary sewer system plays an important role in good health and hygiene by collecting wastewater from homes and businesses. Wastewater is any flow from sinks, toilets, or appliances such as washing machines and dishwashers.


Stormwater is a natural resource that is essential for aquatic ecosystems.

Overview | Creeks ​& Streams | Flood Protection | Floodplain ​& Dikes | Integrated Watershed Management | Steep Slope | Stormwater Management

Erosion & Sediment Control

Soil and Erosion control techniques are important to maintaining a clean, healthy waterway ecosystem and supporting aquatic wildlife.