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How long to fill up pool with garden hose

How long to fill up pool with garden hose


Filling up a pool with a garden hose is a common task for pool owners. However, it can be a time-consuming process if not done correctly. In this comprehensive guide, we will explore the factors that influence the time it takes to fill a pool and provide you with valuable tips to speed up the process. Let’s dive in!

Understanding the Variables

1. Pool Size

The size of your pool plays a significant role in determining how long it will take to fill. Larger pools naturally require more time. Measure the length, width, and depth of your pool to calculate its volume accurately.

2. Water Pressure

The water pressure from your garden hose matters. Higher water pressure results in a faster flow rate, which can significantly reduce filling time. Ensure your hose and water source provide adequate pressure.

3. Hose Diameter

The diameter of your garden hose affects the flow rate. A wider hose allows more water to pass through, speeding up the filling process. Consider using a hose with a larger diameter if you have one available.

4. Flow Rate

Each garden hose has a specific flow rate measured in gallons per minute (GPM). Check your hose’s specifications to determine its flow rate. A higher GPM means faster filling.

5. Water Availability

Consider the availability of water in your area. If there are water restrictions or limited water availability, filling your pool may take longer.

Calculating Fill Time

6. Formula for Calculating Fill Time

To estimate how long it will take to fill your pool, you can use the following formula:

Fill Time (hours)=Pool Volume (gallons)Flow Rate (GPM)

This formula will give you an approximate time frame for filling your pool based on your specific conditions.

7. Example Calculation

Let’s say you have a 20,000-gallon pool, a garden hose with a flow rate of 10 GPM, and consistent water pressure. Using the formula:

Fill Time (hours)=20,00010=2,000 hours

So, it would take approximately 83 days to fill the pool continuously. Keep in mind that you may not want to leave the hose running continuously for this long due to water conservation and maintenance concerns.

Tips for Efficient Pool Filling

8. Monitor the Process

Regularly check the pool’s water level as it fills. This allows you to gauge progress and prevent overfilling.

9. Use a Timer

Set a timer to remind you to turn off the hose periodically. This prevents overflows and conserves water.

10. Optimize Hose Placement

Place the hose strategically to ensure even distribution of water. Avoid excessive splashing and turbulence.

11. Consider a Pool Cover

Using a pool cover when the pool is not in use can help reduce water evaporation, which means less frequent refilling.

12. Plan Filling During Off-Peak Hours

If your area has water restrictions, plan your pool filling during off-peak hours when water demand is lower.

Resource Links

For more information on pool maintenance and water conservation, consider exploring these resource links:

  1. The Pool Care Guy – Filling a Swimming Pool with Well Water
  2. EPA – Tips to Save Water

Frequently Asked Questions

Q: Can I use a smaller hose to fill my pool?

A: While you can use a smaller hose, it will result in a slower fill time. If time is a concern, opt for a wider hose or higher water pressure.

Q: Are there any tools or devices to automate pool filling?

A: Yes, some pool automation systems can monitor and control the filling process, making it more convenient.

Q: Can I leave the hose running overnight to fill my pool?

A: It’s not recommended to leave the hose unattended for extended periods due to water conservation and safety concerns.

Q: How can I ensure the pool is filled evenly?

A: By adjusting the hose placement and using pool circulation features, you can help distribute water more evenly.

Q: What should I do if I have a well and limited water supply?

A: In such cases, it’s essential to plan the filling process and monitor water levels to avoid depleting your well.

Q: Can I recycle pool water to fill it up?

A: Recycling pool water can be an eco-friendly approach, but it requires proper filtration and treatment to ensure water quality.


Filling up your pool with a garden hose doesn’t have to be a daunting task. By understanding the variables that influence fill time and implementing the tips mentioned in this guide, you can make the process more efficient and enjoyable. Remember to consider water conservation practices and monitor the filling process to ensure a safe and successful pool filling experience.

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