From Wazeopedia

Here are some examples of resources that we cannot use because of copyright restrictions. See Using external sources for a general discussion of the problem. You can contact the copyright holders, representing no-one but yourself, and asking them to create a copyright/license notice that would allow anyone to freely use the information without attribution. The Waze team is working to come up with an allowed list of online mapping resources.

Maps/street names/addresses in Delaware:

Note: Sussex County map overlaps some surrounding areas, so it can be used for southern Kent County in some cases, since the Kent County map site is difficult to use.