
Pond owners who observe water levels decreasing should stay calm because most of these causes have solution-based remedies. Several factors could be responsible for decreasing pond water levels, yet most of these problems can be resolved through investigation.
This discussion examines the main reasons behind declining pond water levels, together with effective measures to restore pond health.
Check Your Filters and Water Features
One of the first things to inspect is your filtration system and water features. A blocked filter or an overflowing waterfall can cause water loss.You should inspect your pool filter to ensure it remains clear from summer algae blooms because moving water pools tend to get blocked by this growth.
Filter maintenance is essential for your system, requiring monthly cleaning practices to become standard operations. If you are struggling with debris, consider using a pond hoover to keep the bottom of your pond clean and prevent blockages.
Also, inspect your waterfalls and streams. Twigs or leaves can get stuck at the “pouring lips,” causing water to overflow into your garden instead of returning to the pond. A small blockage here can lead to a big drop in water levels.
Turn Off the Pump to Test for Leaks
A few days without pump operation can help you determine if your filter system and water features are the source of your pond problems. The root of your pumping system problems is most likely the cause when your water level remains stable.
The inspection of all water system components, including hoses, filters, and waterfalls, needs to be done to check for signs of leaks or damage.

The problem likely stems from your pond liner or natural edges if the water level continues to drop when the pump is turned off. The sponge-like action of plants and grasses hanging above your pond water draws fluids out from your water reservoir.
Trim the vegetation that touches the water in order to stop the loss of water from your pond.
Could It Be a Leak?
If none of the above solves the issue, your pond might have a leak. Let the water level drop until it stabilises—this usually happens near the hole in the liner.Make a decision about how to proceed with repair based on the extent of the leak or whether you need to change the liner completely.
Patching remains an option for minimal holes in your pond, though relining should be the selection when dealing with extensive leakage or multiple areas of damage.
Don’t Forget Evaporation
In warmer months, evaporation can cause water levels to drop by 2-3 cm per week. Simply top up your pond, but remember to use a de-chlorinator to protect your pond’s ecosystem.
Need Expert Help?
Never hesitate to call That Pond Guy whenever you need assistance with your pond issue. The experienced members of their staff have expert knowledge regarding pond maintenance that helps them deliver personalised solutions for effectively resolving your pond problems.
These actions will lead you toward resolving your pond water loss problems effectively.