Municipal Stormwater Discharge Criteria -
Metro Vancouver & Fraser Valley
Last Updated: January 25, 2021
City of Abbotsford
Turbidity: < 25 NTU during normal weather conditions (< 25 mm of rain in the 24 hours prior), or < 100 NTU during significant rainfall events (≥ 25 mm of rain in the 24 hours prior).
City of Burnaby
pH: 6.0 - 8.5
TSS: < 25 mg/L above background for normal dry day and < 75 mg/L above background during rain or storm events.
Turbidity: 49 NTU trigger value (sampling will be submitted for laboratory analysis of TSS).
Temperature: <18 °C.
Township of Langley
Turbidity: < 25 NTU, or < 100 NTU, within 24 hours of a Significant Rainfall Event, or as indicated by current Fisheries and Oceans standards
Erosion & Sediment Control Bylaw No. 4381 - 2006
City of West Vancouver
pH: pH of receiving waters cannot be affected by more than 3.0 units above or below background
TSS: < 25 mg/L above background during May - September or < 75 mg/L above background during October - April
Watercourse Protection Bylaw No. 4364 - 2005
B.C. Ministry of Environment Water Quality Standards: Approved BCWQGs