Not a big money saver, but it's a water saver. Reducing how much water we buy from the city was important to us. Utilizing rainwater helps reduce our impact on the environment and make our house a more sustainable domicile.
We will also use rain barrels at strategic downspouts around the house so we will be able to water the garden and plant beds. The cistern and rain barrels will only save us pennies in terms of what we save from buying water from the city (which we still do for showers, sinks, etc.) but it helps save water resources going forward. We are just redirecting rainwater for our use. We will use less of the city's supply, which makes more available for others. The rain barrels will allow us to water where its needed without it flowing onto the street or other impervious surfaces where it can't soak in.
There are other sustainable things we have planned, so stay tuned and I will show them to you as we progress! Have a great weekend.