This is a legacy version of the WELL Building Standard. Please check the latest version here.

Advanced cleaning

Advanced cleaning


To eliminate bacteria and other pathogens from areas at high risk of contamination.


In areas where heavy contamination is expected, advanced cleaning techniques provide an extra layer of protection that can improve environmental hygiene and reduce the risk of cross-contamination. These periodic, high-impact processes are often performed by professionals.

Part 1
Advanced Cleaning Protocols

One of the following is required, at frequencies determined after consultation with a professional accredited service:
Full-room UVGI sterilization treatment, performed by a professional service.
Vaporized hydrogen peroxide treatment, performed by a professional service.