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Final Update V of SW-846 was published in the Federal Register on August 13, 2015 (PDF) (7 pp, 254 K, About PDF).

Related Links

Forum on Environmental Measurements (FEM)

Clean Water Analytical Methods

Air Test Methods

EPA Data Quality Documents

Highlighted Resources

SW-846 On-Line

Test Methods Frequent Questions

SW-846 Federal Register Notices (New & Older Methods)

Validated Methods

Methods Innovation Rule (MIR)


Waste Sampling Draft Technical Guidance

Memo to Regions: Use of Hydrochloric Acid (HCl) in digests for ICP-MS analysis (PDF) (2 pp, 34 k, about PDFs)

What is SW-846?

The EPA publication SW-846, entitled Test Methods for Evaluating Solid Waste, Physical/Chemical Methods, is Waste's official compendium of analytical and sampling methods that have been evaluated and approved for use in complying with the RCRA regulations. SW-846 functions primarily as a guidance document setting forth acceptable, although not required, methods for the regulated and regulatory communities to use in responding to RCRA-related sampling and analysis requirements.

scientist working at lab benchSW-846 is a multi-volume document that changes over time as new information and data are developed. It has been issued by EPA since 1980 and is currently in its third edition. Advances in analytical instrumentation and techniques are continually reviewed by EPA and incorporated into periodic updates to SW-846 to support changes in the regulatory program and to improve method performance and cost effectiveness. To date, EPA has finalized Updates I, II, IIA, IIB, III, IIIA, IIIB, IVA and IVB to the SW-846 manual, and the updated and fully integrated manual contains approximately 3500 pages.

Paper Copy of SW-846

An official printed copy of SW-846 and most of its updates can be purchased the National Technical Information Service (NTIS). Since SW-846 is available on-line the, U.S. Government Printing Office (GPO) subscription is no longer available.

National Technical Information Service

NTIS offers both copies of the current, fully integrated manual and individual copies of most updates and the basic manual (Third Edition before any updates). These documents can be obtained by contacting:

National Technical Information Service (NTIS)
US Department of Commerce
5301 Shawnee Road
Alexandria, VA 22312

800.553.NTIS (800.553.6847)
703.605.6000 (sales)
703.605.6900 (fax order)
Outside the continental US, call 703.605.6000

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