Every month, ideally. Some pros say every season. I say test whenever your water starts looking a bit tired—like it needs a nap and a juice cleanse. Or test when you shock it and the chlorine doesn’t stick around longer than a bad joke at a funeral.
What Should Be The Tds Of Bathing Water
Also test after a heavy rain or a pool party. If you had twenty sun-baked, sunscreen-slathered adults cannonballing for three hours, your TDS is probably higher than their blood alcohol content. Drain accordingly.
One more fun fact: some desert regions have tap water TDS as high as 1,000 ppm right out of the hose. So if you’re filling a pool in Arizona, you’re already halfway to “yikes” before anyone even dives in. Nature is a comedian with terrible timing.
