Contaminated sites and spills

Learn how spills are reported and how contaminated sites are identified, managed, and cleaned up in the Northwest Territories.

Report a spill

Call the 24-Hour Spill Report Line at (867) 920-8130 Or Fill out the Spill Report Form.

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In this section

Giant Mine Remediation Project

Stay updated on the remediation of the Giant Mine site, including air quality monitoring, health safety, and oversight board reports.

Legacy arsenic (Yellowknife area)

Find information on historical arsenic contamination in the Yellowknife area, including soil, water, and fish monitoring results and health risk assessments.

Waste sites and remediation

Browse the inventory of contaminated sites, excepted waste sites, and active remediation projects across the NWT.

Spills management

Details on how the GNWT is managing spills.

Contaminated sites

Information on how contaminated sites in the Northwest Territories are identified, assessed, prioritized, and remediated to reduce risks to human health and the environment.
Updated: Apr 22, 2026