Views: 1 Author: Site Editor Publish Time: 2026-01-31 Origin: Site
Draining a swimming pool is a big job, but it's often a necessary part of pool maintenance. Whether you need to stabilize chemical imbalances, repair a liner, or simply refresh old water, knowing how to do it correctly is essential. While many people think they need to rent expensive submersible pumps, you can often get the job done using your existing equipment.
Using your main swimming pool pump is one of the most efficient ways to lower water levels or drain the pool entirely. However, the process requires careful attention to detail to avoid damaging your equipment. This guide answers your most pressing questions about the process, ensuring you can drain your pool safely and effectively.
Yes, in most cases, you can use your standard pool pump to drain the water. However, the method depends on the type of valve your system uses. Most inground pools are equipped with a multiport valve, which makes this process straightforward.
If you are using a standard pump, you need to ensure the water level stays above the skimmer line initially, or you must redirect suction to the main drain. If your pump runs dry (sucks in air), you risk burning out the motor.
Setting | Function | When to Use |
Waste | Bypasses the filter and sends water out the backwash line. | Best for draining. Use this for lowering water levels or draining heavily. |
Backwash | Reverses flow to clean the filter. | Not for draining. Only use for cleaning the filter media. |
Rinse | Settles the sand bed after backwashing. | Use briefly after backwashing, not for draining. |
Follow this step-by-step process to drain your pool safely.
Before you touch the pump, figure out where the water is going. Connecting a backwash hose to your pump’s waste port is critical. Ensure the hose is long enough to reach a storm drain or a safe drainage area on your property (check local regulations regarding water disposal first).
Never change valve settings while the pump is running. Always switch off the power at the breaker or the timer box first.
Locate your multiport valve. Depress the handle and rotate it until the pointer lines up with the "Waste" setting. This bypasses the sand or cartridge filter, allowing water to flow directly out of the discharge hose.
If you are only lowering the water level a few inches (for example, after heavy rain), you can leave the suction on the skimmers. However, if you are draining the pool significantly:
· Close the skimmer valves. As the water level drops below the skimmer mouth, the pump will suck air.
· Open the main drain valve fully. This forces the pump to pull water from the bottom of the pool.
Turn the power back on. The water should begin flowing out of the discharge hose immediately. Do not walk away. You must monitor the water flow. If the prime is lost or the pump starts making loud noises, turn it off immediately.
Standard pool pumps have limitations. They rely on the main drain to pull water from the bottom. If your pool lacks a main drain, or if the water level drops too low for the pump to maintain a prime, the process will stop.
At this point, you will need a submersible pump or a specialized pond pump to remove the final few inches of water. These pumps sit directly on the pool floor and can operate in very shallow water.
Yes, completely emptying a pool carries significant risks.
· Hydrostatic Pressure: If the groundwater table is high, the pressure from the earth can push the pool shell upward, causing it to "pop" or crack.
· Liner Damage: Vinyl liners can shrink or become brittle when exposed to air and sun without water weight to hold them in place.
· Equipment Burnout: Running a pool pump dry will destroy the seals and motor.
If you are unsure about the groundwater conditions in your area, consult a professional before attempting a full drain.
Sometimes, a standard pool pump isn't enough for the job, especially if you are dealing with flooding, construction sites, or specialized agricultural needs. If you are looking for high-quality drainage solutions, Mepcato Machinery Limited offers a wide range of pumping equipment.
With over 20 years of experience, Mepcato specializes in submersible pumps, sewage pumps, and portable dewatering pumps suitable for both residential and industrial use. They utilize advanced machinery and skilled technicians to ensure every unit meets rigorous quality standards.
To learn more about their history and manufacturing capabilities, visit their About Us page.
Using your swimming pool pump to drain your pool is a cost-effective solution for maintenance, provided you use the "Waste" setting and monitor the water levels closely. Always prioritize the safety of your equipment and the structural integrity of your pool. If the job requires completely emptying the basin, consider having a backup submersible pump ready to handle the shallow water that your main system can't reach.
