Which Covers Are Best At Slowing Pool Water Evaporation? Have you ever wondered just how effective a pool cover is in reducing water-related costs? Ideally, the best pool covers offer cost-saving features that can benefit any pool owner. Here we take a look at the efficacy of the best pool covers in saving water by slowing down evaporation from pools. Pools with low evaporation are more cost and energy efficient, requiring less work from the heater to keep them at the right temperature. The waterproof automatic covers most effective at slowing evaporation carry the added benefit of blocking sunlight. Sunlight breaks down chlorine and other sanitizing chemicals, as well as aiding the growth of algae. A pool that’s covered will need less chemistry to keep balanced. The Pool Water Evaporation Study Our information is based on a study undertaken by the Cal Poly San Luis Obispo University in conjunction with other stakeholders like The National Plasterers Council. The study strives to compare the water savings that would result from the adoption of different pool covers. Gathering Accurate Data With The Best Pool Covers Many pool owners do not make use of pool covers in California. However, given frequent droughts