Possible Savings

With Neptune Aqua it is possible to save in excess of 50% of your daily mains water consumption, but what about the electricity cost of running a Neptune Rainwater Harvesting system?

Naturally, this depends on what type of system you have: – Domestic, Commercial, Education, Industrial… each system can be set up to use different pumps to match individual flow rates etc. However, take a look at the domestic example below: -

• Five-bedroom, 2-story detached house with 3 WC’s in North Manchester
• Occupancy: 2 adults and 4 children
• Average daily use of potable mains water prior to fitting a RWH system: – between 780 – 900 litres per day
  (284700 – 328500 litres per year)

• Average daily use of potable mains water with a Neptune Aqua RWH system: – around 390 – 450 litres per day
  (a saving of between 142000 – 164000 litres per year)!

• Pumping costs are low… our standard domestic submersible pump will pump 60 litres per minute at 18mtrs head which means it only takes 7 minutes to pump 450 litres per day
• United Utilities (the local electricity supplier) charges £0.18554 per kW/hour at the higher rate (February 2011)
• Our 1.1kW domestic pump’s total daily cost based on the above scenario is therefore less than 2 pence per day (£9.12 per year)!!