Heavy rainfall can introduce dirt, debris, and bacteria into your pool, affecting water quality. Acting quickly can prevent algae growth and protect your pool’s chemistry.


Step 1: Remove Debris

After rain, clean your pool thoroughly:

  • Use a skimmer net or leaf rake to remove large debris
  • Vacuum smaller debris with a roller vacuum
  • Pay attention to waterline and steps

Step 2: Empty the Skimmer

Rainwater can fill skimmers with leaves and dirt. Emptying them ensures proper filtration and water flow.


Step 3: Test and Rebalance Water Chemistry

Rainwater may alter pH and alkalinity. Test your pool’s water and adjust levels to prevent algae and maintain safe swimming conditions.


Step 4: Add Chlorine

Chlorine sanitizes your pool by killing bacteria and harmful microorganisms. Add according to your pool size to restore proper levels.


Step 5: Use an Algaecide

If algae appear, apply algaecide and brush affected surfaces—walls, floors, steps—to prevent spread.


Step 6: Use a Phosphate Remover

Phosphates from soil or mulch can feed algae. Applying a phosphate remover helps prevent further growth.


Step 7: Drain Excess Water if Needed

If water levels are too high, use your pool pump on “waste” or backwash to remove excess water.


Step 8: Maintain Proper Filtration

A clean, functioning filter traps debris and algae. Run the filter continuously until the pool water is clear.


Concerned about your pool after heavy rain? Contact our specialist pool team today for advice and professional maintenance to protect your pool all year round.

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