Water Monitoring
Independent testing. Public results
Since 2021, the Stibnite Advisory Council has commissioned its own independent water sampling, conducted by a third-party laboratory, to verify that Perpetua Resources’ test results are accurate and consistent.
Tracked Parameters
What both labs test for
Both Perpetua Resources and the SAC’s independent laboratory test for the same set of parameters, making results directly comparable.
Lab testing follows EPA-approved methods for freshwater quality analysis.
Metals & Trace Elements
Mercury
Arsenic
Lead
Cadmium
Antimony
Selenium
Chromium
Copper
Zinc
Nickel
Silver
Chemical & Field Parameters
Cyanide
Sulfate
Nitrate
Ammonia
pH
Conductivity
2025 Water Monitoring Report
2025 Water Quality Monitoring Report
The Stibnite Advisory Council's independent water quality monitoring results for 2025, verifying project data across the sampling program.