IMO with all problems with our environment we should be trying to work along two seperate routes at the same time.
First look frankly at our own homes and decide which products should either never be used, or only used sparingly in the interest of the environment. The problem about doing this as a private individual is that it can be well-nigh impossible to work out which is the lesser of two evils.
To take an example named already in this thread - use less toilet paper and wash with a hand-held shower attachment or in a bidet.
Sounds fine to me - but I lack the competence to judge whether producing and destroying toilet paper does more damage evironmentally speaking than producing bidets or shower attachements plus the increased use of water for washing.
But most of us can make a start by not using disposable cloths or any kind, using as little water as possible for cleaning or flushing toilets and washing our clothes carefully.
The other thing we all should be doing has also already been suggested: insist to politicians, local water boards, sewage factories, wild-life associations etc. that this wanton destruction of our environment MUST stop NOW if there is to be a worthwhile environment for the generations that will follow us.