Pool Overflow After Rain? Here’s How to Lower Water Levels Fast! After heavy rainfall, your pool water level can rise too high, risking poor skimming and dirty water. In this quick guide, we’ll show you how to safely reduce your pool water level to 1 inch below the skimmer box mouth. Whether you’ve got a cartridge filter with a 3-way valve or a media filter with a backwash system, we’ve got you covered. 🔧 Learn how to: ✔️ Use your 3-way valve on a cartridge filter ✔️ Backwash with a media filte