I also lived in College Terrace in Palo Alto, where one of the superfund is. At the time very few residents knew about the issue. I believe it is the same today.
My neighbor Aaron Greenspan (also known for fighting his classmate Mark Zuckerberg on trademark issues) asked local authorities to do more to inform residents. It did not go anywhere. He eventually moved out, and so did I.
Here's one of his blog posts from back in 2013: http://www.aarongreenspan.com/writing/20130404/in-search-of-...