Auditing would substantially increase rates, which would lead to non-competitiveness in a tight industry.
Having an environmentally responsible premises is fine, and I have been doing everything I can to keep the air and water clean, and to reduce the environmental footprint. The problem, often, is finding clients who will preserve that mandate. Why does anyone need a half hour hot shower after swimming in clean open water? Why is there more garbage/client year after year? Now we also have the problems of triclosan in anti-bacterial soap and plastic microbeads in soap and toothpaste; with all that I do, clients' choices can have ever increasing negative impact to the work I have done to date.
It takes a personal commitment; it is not something that someone else can do for any individual.