Priority pollutants measurement context
Priority pollutant testing combines tests described on this page: the 13 priority pollutant metals (antimony, arsenic, beryllium, cadmium, chromium, copper, lead, mercury, nickel, selenium, silver, thallium and zinc), measured by ICP-MS with mercury by cold vapor atomic absorption; total cyanide and phenols; and the volatile, semivolatile, and pesticide and PCB scans above. It can be ordered as a full scan or by group. Offered for water samples.
Confirm matrix and regulatory context
Environmental water, wastewater and companion solids need explicit applicability review. SW-846 and Clean Water Act methods are not automatically interchangeable for permit reporting.
Include the complete project requirement
Provide the matrix, target analytes, required method, fraction, units and reporting limits. Include the permit or monitoring instructions where results will support a regulatory submission. Naming this method does not establish blanket compliance eligibility.
Resolve collection before sampling
Use the bottle, preservation and delivery instructions assigned to the agreed scope. Identify each location and collection time, and document any deviation. The final analytical plan must fit the submitted material and its intended use.
Related testing & guidance
Technical & service references
Vanguard service detailsSource review: November 8, 2026. The agreed method and project scope govern the testing.