THE SWEETWATER BLOG

Rainwater is acidic and involves the chemicals in the pool’s water. Rainwater can also change the pH balance and alkalinity level. Acidic rain can also make water corrosive, which can affect plaster and ceramic over time. Here are some other factors on how rain may affect your swimming pool: Rainwater causes pH levels to rise and TA levels to fall due to chemical dilution. Chlorine is less active, so it will not kill the microorganisms and keep the water clean. Rain can bring algae spores and other debris (like dust) that can submerge into the water which can make it murky and, if not treated quickly, the sun’s rays can accelerate algae growth.