Here is an article from the Huffington Post from 2/22/06. Catholic Charities has teamed up with the City of Santa Rosa to put hygiene services on wheels and bring dignity and comfort to those who need it the most.
https://www.huffingtonpost.com/entry/homeless-showers-trailer_us_56c5e4f2e4b0c3c55053f03a
This is a very very good used of time and energy and money.