By contacting Waukesha Radon Mitigation Radon Mitigation & Testing, you made the best decision to reduce elevated levels in your home. Our company has been in business for decades in Waukesha and Waukesha County. As an experienced Radon Contractor, we know which system to fit into your home in order to bring elevation down to the lowest amount possible. Contractor. As Wisconsin's premier pioneer mitigation contractor, we have fixed thousands upon thousands of gas infested houses throughout the Waulesha community....and we are just getting started. Contact us today!