🟢 Why Maintaining the Right Pool Water Level Is Essential — Especially in Brisbane

The following is general advice only. Requirements for individual pools and pool systems may vary.

Brisbane’s warm climate is perfect for pool ownership, but it also means higher evaporation rates year-round. While topping up your pool might seem like a minor chore, maintaining the correct water level is one of the most important — and often overlooked — aspects of pool care.

Letting your pool water drop too low can lead to serious (and expensive) problems. Here’s why keeping your pool properly filled matters, what can go wrong if you don’t, and how to spot the warning signs early.

Why Pool Water Level Matters

Your pool is designed to operate within a specific water level range — usually halfway up the skimmer opening. When the water level stays within this range:

  • Your pump and filtration system work efficiently

  • Chemicals distribute evenly

  • Skimmers can remove debris properly

  • Your pool surface and equipment are protected

In Brisbane, evaporation can remove several centimetres of water per week, especially during summer heatwaves, dry winters, or periods of strong winds.

What Happens If Your Pool Water Gets Too Low?

1. Pump and Equipment Damage

Low water levels can cause your pool pump to draw in air instead of water, leading to:

  • Loss of prime

  • Overheating

  • Seal and motor damage

Pump repairs or replacements are far more expensive than simply topping up your pool regularly.

2. Skimmer Stops Working

Your skimmer relies on water flowing into it. When levels drop:

  • Leaves and debris stay in the pool

  • Water quality declines

  • Your filter has to work harder

This can quickly turn a clean pool cloudy or green.

3. Chemical Imbalances

Lower water levels mean chemicals become more concentrated, which can:

  • Irritate skin and eyes

  • Damage pool surfaces

  • Throw your water balance out completely

Adding water helps stabilise your pool chemistry and keeps swimming safe.

4. Structural Stress

In extreme cases, especially with concrete pools, very low water levels can place uneven pressure on the pool shell, particularly during heavy rain or groundwater movement.

Signs Your Pool Water Level Is Too Low

Keep an eye out for these common warning signs:

  • Water sitting below the skimmer opening

  • Pump making unusual noises or losing suction

  • Air bubbles visible in the pump lid

  • Poor circulation or weak water flow

  • Debris not being pulled into the skimmer

If you notice any of these, it’s time to add water immediately.

How Often Should You Top Up Your Pool?

In Brisbane conditions, most pools need topping up:

  • Weekly during summer

  • Every 1–2 weeks in cooler months

  • More often during hot, windy, or dry spells

A good habit is to check your water level at the same time you test your pool water.

Tips for Filling Your Pool Correctly

  • Fill the pool until the water sits halfway up the skimmer opening

  • Use a garden hose with a timer if possible

  • Avoid overfilling, especially before heavy rain

  • After topping up, re-test and rebalance your pool water

If you’re unsure how much water your pool needs or whether evaporation is normal, a professional water test can give you peace of mind.

We’re Here to Help Keep Your Pool Healthy

At WaterPro Pool and Spa, we see firsthand how many pool problems start with low water levels. Regular top-ups, combined with proper testing and maintenance, can save you money and extend the life of your pool equipment.

If you’re experiencing water loss, pump issues, or just want advice tailored to Brisbane conditions, drop into our store or speak with our friendly pool experts. We’re always happy to help you keep your pool safe, balanced, and swim-ready all year round.

Drop into WaterPro Pool and Spa (2/439 Gympie Road, Kedron), give us a call (1300 447 665), or contact us. Our friendly team is here to help you keep your pool sparkling, balanced, and ready to dive into!