At this time, Waukesha County will no longer be hosting electronics and appliance collection events. You can find a list of community organizations that will still collect electronics at the link below.
Most conveniently, many haulers will collect electronics for a fee. Computers and appliances can typically be disposed of for free at a variety of locations. Computer monitors and TVs typically have a disposal fee, but are now accepted at a variety of locations. We always suggest calling a business prior to taking items for disposal and Waukesha County does not endorse any business.

https://www.waukeshacounty.gov/landandparks/recycling/electronics/cds-dvds-vhs-tapes/