Wisconsin Asbestos and Lead Database Online (WALDO)

Apply for certification online using WALDO, the Wisconsin Asbestos and Lead Database Online.

Lead and Asbestos Online Certification

Click here to apply for certification online using your Visa or MasterCard.  Individuals and company certification applications for all disciplines may be submitted online. To pay with a check or money order, submit a paper application (PDF, 304 KB) by mail to our office.

Due to scheduled web maintenance, online application will not be available during the following times:

  • Sunday, October 11, from 12:00 a.m. to 2:00 a.m.
  • Sunday, October 25, from 12:00 a.m. to 5:00 a.m.

If you have taken required training outside of Wisconsin, or are applying with a fee exemption request, please mail a paper application (PDF, 304 KB) to our office. 

Lead-Free/ Lead-Safe Registry

DHS maintains the Wisconsin Lead-Free/Lead-Safe Property Registry. Properties in the registry include both residential and child-care facilities where an inspection found the property to be entirely free of lead-based paint (Lead-Free) or free of lead-based paint hazards (Lead-Safe). Only properties inspected by a state certified Lead Inspector, Risk Assessor, or Hazard Investigator qualify for inclusion in the statewide registry. Click here for more information about the registry. 

Lead-Safe Wisconsin Home

More information about lead-based paint, lead-safe renovation and lead abatement, lead training and certification requirements, childhood lead-poisoning in Wisconsin and the health effects of lead exposure, and how to find a certified contractor or how to conduct lead-safe work.

Renovator Corner

If you are a contractor whose work disturbs paint in homes or other buildings built before 1978, you may be disturbing lead-based paint. Click here for information on your responsibilities when conducting this work. 

Asbestos Home - Asbestos certification and information

Contact Us - Lead and Asbestos Section contact information.


Last Revised: October 8, 2015