Fact #2: Pool covers save water – but how much?

One of the questions I am often asked is, “How much water does a pool cover save”? We all know that pool covers save water by virtually eliminating evaporation when they’re on the pool, but how much evaporation does your pool have? It’s a valid question, and the answers can vary quite dramatically, depending on several different factors.

It would be perfectly normal for an ‘average’ sized pool to lose anywhere between 2mm and 10mm of water to evaporation every day.  Location, wind speed, humidity, shade, sunlight, air temperature and water temperature all have an impact on evaporation rates, and so does the size of your pool, so there really is no ‘average’ answer.

If you’re really keen, you can look at statistical averages on the government weather bureau website (BOM) to see rates of evaporation in your area, and then make some sort of calculation from there. It’s a complicated process though – I’ve been through the exercise with my own pool and estimate that without a cover, I’d experience evaporative water loss of over 73,000 litres per year! Isn’t that a staggering amount?
This means it’s really easy to justify why all pool owners should use a pool cover and just how much precious water they will save. to see how much we can contribute to sustainable water usage for Australia’s future, today!

Garry Long has been working in the Australian pool industry since 1978. A qualified canvas goods maker with a passion for innovation, he was inspired by the technology behind the sails used in America's Cup racing sails, and adapted and applied it to the pool industry at ABGAL. In 1990 ABGAL were the first company in Australia to use a single ply robotic cutting system to fabricate vinyl products. In 1993 Garry developed a 3D measuring system for complex shaped inground pools, which continues to be used today. Garry was President of the Australian Canvas & Synthetic Products Association in 2007-2008, and is the Managing Director at ABGAL Liners & Covers.