How it works

In essence it’s a very simple solution. Instead of releasing the water run off from the weekly testing into a local foul drain, above ground drainage pipework extending from the pump house & valve manifolds divert the wastewater into a large, underground submersible storage chamber. When required, the sump pump will automatically send the wastewater back into the sprinkler water storage tank, ready for reusing.

The wastewater from testing a sprinkler system is generally classified as clean and does not contain any harmful contaminants to be concerned about. The primary benefit of sprinkler wastewater recycling is in its ‘reuse’ – thereby not taking any freshwater from the natural water cycle of the environment, rather reusing the water that is already in the system.

How much water can you save?

This depends on the size of your site, the level of hazard and the design of your system, together with the duration of the testing. However on average for a system requiring just one diesel pump the wastewater produced will amount to approximately 4,550 litres weekly, or 234,000 litres annually. For a much larger warehouse or manufacturing plant and you can scale up these figures accordingly.

Testing uses roughly 150 litres of water per minute. The recommended time to test is 30 minutes, therefore 4,500 litres of water would be used. The weekly bell test will add an additional ~30 to 50 litres of wastewater from each valve set manifold.

If this is something you might be interested in, please get in touch and we will be happy to discuss the options available to you, depending on your site.