Update on Lead Testing in NWT Schools: GNWT taking interdepartmental approach to address water testing issues in Yellowknife schools

Press Release

July 14, 2025

The Government of the Northwest Territories (GNWT) continues to take action to address concerns about the presence of lead in water in some Yellowknife schools. Since our last update, which shared preliminary testing results, we have received Stantec’s final reports, which confirms preliminary findings and have also completed an internal review to understand why initial action was delayed when the water testing initiative first rolled out in 2025, and to identify ways to improve.

In line with our commitment to transparency and open communication, the GNWT is releasing the Stantec reports and the investigation report to the public. The Stantec report confirms the data already released. Work ongoing now involves further investigation into the source of lead and development of mitigation and remediation measures.

The investigation report outlines the history of lead testing and provides insight into areas that need improvement. This report was intended to provide impartial insight that will inform how we plan and implement future projects with improved cross departmental collaboration. We have reviewed the recommendations and are taking action. Some recommendations have already been completed, and the rest will be embedded or addressed in future work.

Senior officials are meeting regularly to coordinate efforts across departments and to ensure work is advanced in three key areas:

Remediation planning for sites where lead has been confirmed.
Development of a long-term, sustainable water testing program for all applicable facilities; and
Improved coordination between departments and agencies responsible for water quality, school operations, and public health.

The following outlines some of the work now underway through a GNWT working group:
1. William McDonald School:

Analyze and interpret results
Investigate building drawings and onsite plumbing conditions
Develop mitigation and remediation options
Scope required mitigation and remediation work
Complete mitigation and remediation work
Conduct water testing after work completed
Follow up testing as needed

2. Range Lake North School:

Develop flushing protocol options
Develop a maintenance protocol focused on flushing procedures
Conduct testing to confirm protocol effectiveness
Follow-up testing as needed

3. Follow-up and Ongoing Testing in Schools

Prioritize remaining schools for testing informed by a risk assessment approach (for example, focusing on building age or student age)
Verify and standardize protocols for testing
Conduct water testing and any required follow-up

We recognize the importance of safe drinking water, and we are committed to doing this work thoroughly, guided by expert advice. As further information becomes available, and progress is made on remediation measures and a standardized testing program, we will continue to keep the public informed.

Update on Lead Testing in NWT Schools: GNWT taking interdepartmental approach to address water testing issues in Yellowknife schools

NationTalk Partners & Sponsors Learn More