How Do I Fix the Low Flow on My Pool Pump?

Having a pool in your backyard is not always as glamorous as it sounds. It is because it takes a lot of responsibility and basic home maintenance skills. You have to keep it clean by removing debris, and water treatment is also key to keeping it clean and bacteria-free.

How do I fix the low flow on my pool pump? To keep your pool running smoothly, the most important thing to look after is the pump. It is essential to the efficiency of your pool system. Low pump flow may cause more problems for your pool later on.

A Must-Read: How to Select the Best Pool Pump

After reading this informative article, you will know the different causes of low pump pressure and what they all mean. You will also learn about the steps you need to take to fix these issues and prevent them from happening often.

Causes Of Low Flow

There is a wide array of possible explanations as to why your pool pump has low flow. Most of them come down to clogging, leaks, and damaged pool system parts. If you know the function of each part and check the system regularly, you can determine what the cause is.

Here are only a few of the common reasons why you are experiencing low flow on your pool pump:

Air Leak

One reason why your pool pump may have low flow is due to an air leak. It means that there may be no pressure flow at all. If your pool pump has an air leak, there is more air coming in than water. The pump is sucking in the air into the pool rather than water. As a result, the water pressure will drop.

Low Levels Of Water

Perhaps the problem is there is too little water in your pool. The water level should not be lower than the pool’s skimmer door. Ideally, the water will reach at least half of the opening of the skimmer door.

Clogged Skimmer Or Strainer Basket

It might happen if your skimmer or strainer baskets have too much debris or dirt in them. The pipe from your pump to your skimmer then becomes blocked. Water will not be able to flow freely from the pump.

Faulty Pressure Gauge

The pressure gauge on your filter lets you know what the pool system’s pressure reading is. It should be between 5 to 15 psi or 10 to 20 psi, depending on your filter system.

Anything lower or higher would indicate that something is wrong with the system. However, you might not even have low water pressure in the first place, but a damaged pressure gauge instead.

Suction Leak

A suction leak is similar to the previously mentioned air leak. However, it works oppositely. With an air leak, the air is being sucked into the pool system. When you have a suction leak, on the other hand, water will be spraying from the pump.

Small Pump

Another reason for low pump flow could be because your pool pump is too small for your system. It might have happened due to inaccurate calculations for your system, or you moved the pump to a different place. It could also be because you upgraded your system and added new equipment.

Fixing Low Pressure

If you are experiencing low flow in your pool pump, this should not be too difficult to fix. As mentioned earlier, owning a pool entails responsibility. You are responsible for maintaining your pool system and ensuring it is running properly. Doing the following will fix any issues you might have, including low pump pressure.

Regular Cleaning

By cleaning, I do not just mean cleaning the water. Yes, you should treat your pool water with chlorine to make sure it is adequately sanitized. That is already a given. Aside from this, you must also clean every part of your pool system. It includes the pump, filters, skimmer and strainer baskets, pipes, and diverter valves.

Do a routine check and remove any debris, rocks, dirt, leaves, hairs, and other foreign objects. Also, unclog them when needed to allow water to flow freely from the pump.

Closing Leaks

Regular check-ups are crucial for you to catch problems early on. It is how you will see if you have any air or suction leaks in your system. Leaks might occur because something is loose, so you can correct this by merely tightening it again.

Some leaks might be due to tearing, stretching, broken bits, or broken seals. For cases like these, you could apply some thick coats of lubricant to close the leaks.

If the leak cannot be fixed by the suggested solutions above, you might need replacements for your parts. When the damage is too much for corrections or band-aid fixes, there is not much else you can do.

Upgrading Or Replacing Your Equipment

Sometimes, your pool system or parts of the system are too old and are beyond repair. When this occurs, you have to get yourself some replacement parts.

You will be able to find replacements on the market for almost every part of your pool system. Replacement parts are available for skimmers, filter cartridges, pump parts, plumbing fittings, pressure gauges, and

pump motors.

It is also possible for you to not just replace the parts but also upgrade them to better ones. Upgrading to newer parts may help your pool system run smoothly for a longer period without the need for repairs. Some newer models of pool system parts might even have self-cleaning features.


Maintaining a pool is hard work, and this requires a lot of time and attention. Unless you can hire someone to worry about it for you, that is. Still, nothing beats having your pool right in your backyard on those hot summer days.

Low water pressure have many different causes, but it is easy to identify the main one. As long as you keep all components clean and unclogged, and check for damages, your pool system will run smoothly.

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