Calculate costs & savings for rain tanks, sewage

Cost benefit analysis for water and sewage

Use this calculator to provide a straightforward comparison between a business as usual, conventional domestic energy, water and sewerage system, and what can be achieved today with systems to save energy and water.

Download the calculator; it’s an Excel spreadsheet so you will need to have that program or one which can ‘read’ it on your computer.

Just insert your best-guess figures for your own home into the cost calculator.

  • Michael Mobbs

    Michael is a former Environmental Lawyer who is uniquely placed to consult in four main areas:

    • Sustainability Coach and Speaker,
    • Sustainable Urban Farm Design greening, watering and cooling the cityscape, roads, parks, suburbs,
    • Major Projects Consultant Commercial and Industrial,
    • Residential Sustainability Consultant.
    For permission to re-print any articles or to book Michael for a speaking engagement go to Contacts. Please ensure all quotes from Michael's blog include a reference to