What step should be beneficial for save nature? As well as Save Water
We are not living in harmony with our planet, nature, animals and other humans.
But this is only a symptom of a deeper issue we have. Everything
outside of the skin, our actions and what you see in the world is all a mere reflection of what we are, think and feel
inside the skin, in our consciousness.
Therefore as long as we don't deal with the root of the problem we will keep struggling and things will be destroyed in our path. Finding out who we really are and if we don't like it, change it -- this seems to be the only way of evolving the quality of our consciousness.
Trying to 'save' water and nature would be the equivalent of taking a pill for a tooth ache instead of seeing the dentist, changing the form of government, electing a new dictator or re-arranging the chairs on the deck of Titanic while sinking, all this time expecting true change and prosperity.
Your question can be boiled down to: how do we become better people, more loving and caring? That's the name of the game in my opinion.