In summer a pool can lose a noticeable amount of water every week to evaporation. Keeping the right level protects the pump and keeps circulation working.
Why the level matters
The water should sit around the middle of the skimmer opening. If it drops too low, the skimmer pulls in air and the pump can run dry and get damaged; see pool pump problems.
Reducing evaporation
- Use a pool cover when the pool is not in use, especially at night.
- Provide shade or windbreaks where possible.
- Avoid running water features during the hottest hours.
Normal loss or a leak?
A simple bucket test helps: fill a bucket with pool water, place it on a pool step so the water levels match inside and outside, and mark both. After 24 hours compare the drops. If the pool drops much more than the bucket, you may have a leak and should call a technician.
Topping up
Add water slowly and retest chemistry afterwards, since fresh water dilutes chlorine and stabiliser; see cyanuric acid explained. Include level checks in your weekly pool checklist.
Our swimming pool services and pool cleaning teams can help with testing and repairs.
Why pool water level drops fast in summer, and what to do
In the hot months a pool can lose a noticeable amount of water every day through evaporation. Sun, heat, dry wind and warm water all speed it up, and splashing and backwashing remove more. A small, steady drop is normal. The level only becomes a problem if it falls below the skimmer opening, because the pump can then draw air and run dry, which can damage it quickly.
Check the level once a day in summer and top up with a hose when it falls. It is also useful to know whether the loss is evaporation or a leak. A simple bucket test can help: place a bucket of pool water on a step, mark the water level inside and outside the bucket, and compare after 24 hours. If the pool drops much more than the bucket, a leak is likely.
Ways to reduce the loss
- Use a pool cover when the pool is not in use, especially overnight.
- Reduce strong wind exposure with screens or planting where possible.
- Avoid overfilling or running water features for long hours during the hottest part of the day.
- Fix dripping fittings and check the pump, filter and valve for leaks.
- After a big top-up, retest chlorine and pH because fresh water dilutes the chemistry.
Water level questions
What is the ideal water level?
Around the middle of the skimmer opening. Too low and the skimmer sucks air, too high and it cannot skim properly.
Does adding water change the chemicals?
Yes. Fresh water dilutes chlorine, can shift pH and may add minerals. Retest after topping up.
When should I call a technician?
If the bucket test points to a leak, if wet patches appear around the pool or equipment area, or if the pump keeps losing prime.
Read our weekly pool maintenance checklist or contact our pool team.
Related reading and products
Related guides
- Swimming Pool Pump Problems: Common Causes and What to Check
- Pool Cleaning Service vs DIY: Which Is Right for You?
- Safe Handling and Storage of Pool Chemicals
Need help from Clean Eco Trade?
Related guide: how to choose and look after swimming pool lights
Our team in Seeb, Muscat supports homes, cafes, restaurants, farms and businesses across Oman. Contact us for a quote or message us on WhatsApp +968 9828 1478. You can also browse our full product range or see all services.
