Municipal Stormwater Discharge Criteria - 

Metro Vancouver & Fraser Valley

Last Updated: August 16, 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).

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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.

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Sediment Control Information
Sediment Control System Permit Applications

Watercourse Bylaw

City of Coquitlam

pH: 6.5 - 8.0

Turbidity: < 25 NTU or < 100 NTU: where a Significant Rainfall Event has occurred within the preceding 24 hours

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Stream and Drainage System Protection Bylaw
No. 4403, 2013

Erosion and Sediment Control BMPs

City of Langley

TSS: < 75 mg/L

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Watercourse Protection Bylaw No. 2518

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

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Erosion & Sediment Control Bylaw No. 4381 - 2006

City of Maple Ridge

pH: 6.0 - 9.0

TSS: < 25 mg/L during dry weather operation and < 75 mg/L during the "wet season"

Turbidity:  < 20 NTU

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A bylaw to protect watercourses in Maple Ridge Bylaw No. 6410 - 2006

City of New Westminster

pH: < 6.5 - 9.0

TSS: < 75 mg/L 

Turbidity: ≤ 65 NTU

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A Guide to Erosion & Sediment Control

Erosion and Sediment Control Bylaw 7754, 2016

City of North Vancouver

pH: 6.5 - 8.0

Turbidity: < 25 NTU, or < 100 NTU, during and for 24 hours following a Significant Rainfall Event (>25 mm in 24 hours)
Temperature: < 2 °C increase.

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District of North Vancouver

TSS: < 25 mg/L during May - September or

< 75 mg/L during October - April

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City of Port Moody

pH: 6.5 - 8.0

TSS: < 75 mg/L above background 

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Stream and Drainage System Protection Bylaw No. 2470 - 2001

ESC Specifications

City of Surrey

TSS: < 75 mg/L

Turbidity: 60 NTU trigger value (sampling will be submitted for laboratory analysis of TSS).

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City of Vancouver

pH: 6.0 - 9.0

TSS: < 75 mg/L 

NTU: 45 NTU trigger value (sampling will be submitted for laboratory analysis of TSS).

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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

 

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Watercourse Protection Bylaw No. 4364 - 2005

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TREATED STORMWATER

Real-time monitoring of effluent quality and quantity with automated flow re-routing

Real-time creek monitoring system

STREAMS & OUTFALLS

Real-time, continuous monitoring of water quality, water levels, flows and weather

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WASTEWATER

Continuous, remote monitoring of wastewater effluent quality and flows

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DEWATERING EFFLUENT

Real-time monitoring of groundwater quality, quantity and levels