Wisconsin’s Public, Environmental
and Occupational Health Laboratory Since 1903

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About WSLH

The Wisconsin State Laboratory of Hygiene (WSLH) is the state’s public and environmental health laboratory. As part of the University of Wisconsin-Madison, the WSLH is committed to exploring new ideas which benefit the state, the nation and the world.
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Location

Wisconsin State Laboratory of Hygiene
2601 Agriculture Drive, PO Box 7904
Madison, WI 53718 USA

Key Contacts

After Hours Emergency
(608) 263-3280
Clinical Laboratories
(800) 862-1013
Environmental Laboratories
(800) 442-4618
Wisconsin Occupational Health Laboratory:
(Industrial Hygiene)
(800) 446-0403
WSLH Proficiency Testing
(800) 462-5261
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Feedback, questions or accessibiity issues: webmaster@mail.slh.wisc.edu
© 2025 Board of Regents of the University of Wisconsin System