It is incredibly complicated and the consequences of ones actions can be different depending on where you are. Fresh water is a concern in general on a global scale, but where I am, household water comes from the Great Lakes. As long as Niagara Falls still thunders, my concerns about personal water usage here are confined mostly to the energy used in processing it. My efforts to conserve water will not have the same meaning as in places prone to drought. As for soap, that’s mostly for my hands. Elsewhere, I find it a waste, it dries my skin, gives me rashes, and the artificial fragrances that usually accompany it disgust me more than any odor a healthy living body normally emits. A nice soak and a washcloth pulls the dirt with the dead skin and at the risk of exposing myself as scandalously filthy by absurdly and neurotically vain modern norms, it’s less than daily. Maybe that is some compensation for me using heated water, but that’s relativism and merely doing better than average is not much with where we’re at right now.
I firmly believe in one trying to do what one thinks to be right, regardless of who can see, but at the same time, with the scale of the environmental issues, I don’t know if there’s much anyone can do by themselves that can have a very significant impact unless it influences others. You sound like you are taking the issues at hand as seriously as we all should be. Thank you! Around me, the ignorance about and disregard for the environment and native wildlife, breaks my heart every day, but personally, I would advise against drawing lines and instead recommend constantly striving for improvement and greater understanding.