Does the rainfall affect the chemistry of my pool? This is ques­tion we hear a lot, con­sid­er­ing where we live and the fact that every pool receives so much rain­wa­ter each year. Especially this wild year! Oh, but we still love the Pacific Northwest!

Does rain­fall change my swim­ming pool’s chemistry?

The answer is yes. But not a lot unless we’ve had s a tor­ren­tial rain. Rain is acidic and has a lower pH level (around 5.0) than your pool’s pH, which should be between 7.4 and 7.6. (The human eye has a pH of 7.5–that’s why your sting­ing eyes tell you so quickly if the pH is off. When you get sting­ing eyes, the pH may have been low­ered by rain­wa­ter, which has a pH of around 5.0.

Do I need to raise the pH every time it rains?

Not with a light rain. If you are care­ful about stay­ing on top of pH, alka­lin­ity and sta­bi­lizer,  you should be fine. If there’s a heav­ier rain and you have to drain the pool a few inches, you should test and add more chem­i­cals if necessary.

It’s worth invest­ing in a pro­fes­sional test kit for about $10.

And if you have ques­tions about your pool chem­istry, as always, just give us a call at 503–631-4816.




Powered by Facebook Comments