Wisconsin Asbestos and Lead Database Online (WALDO)


Apply for certification online

Apply for certification online using WALDO, the Wisconsin Asbestos and Lead Database Online. Using a smartphone to apply online is not recommended.

Information on this page has been organized into two categories. Please choose one of the following tabs.

Apply for certification online

Apply and pay for certification online: Visit WALDO!

Apply for individual or company certification online, where you can pay by Visa, MasterCard, or electronic check. For assistance with WALDO, please call 608-261-6876. Using a smartphone to apply online is not recommended.

To pay by money order or paper check, you'll need to mail your application and payment together. Don't apply online if you have taken training outside of Wisconsin, or if you are fee exempt. The following are links to application forms that can be downloaded, printed and mailed to our office with your payment for processing:

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 Wisconsin-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

Find 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.

Lead-Safe 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. For information on your responsibilities when conducting this work, view our Frequently Asked Questions for Renovators page.


Questions? Can't find what you're looking for? Contact us.

Last Revised: September 25, 2017