What if the city designed and sold a nice water bottle (dishwasher safe, recycleable, etc. ) that residents could fill up with tap water (and ice?) instead of constantly buying small bottles of water?  If it was well-designed, with a nice San Francisco logo, with proceeds going to improving city services/cleaning up the streets (homelessness, etc.) it could become "hip" to support the city and the environment as we hydrate ourselves.

This way  individuals could contribute to this environment push as well.

Just an idea…

Thanks,