How fast do pools fill up?
The average pool can take 12-24 hours to fill and that is only if you have a few hoses chugging away. When your family is chomping at the bit to dive in, that may as well be an eternity.
For an average-sized, 15,000-gallon swimming pool, it takes about 48 hours to fill the pool with water.
Assuming that your pool capacity is 20,000 gallons, it will take 20,000/360 or 55.55 hours to fill up your swimming pool.
If you've got a 13,000 gallon pool, it would take about 24 hours to fill your pool.
Although it may take several hours to fill your pool completely, make sure that someone is available to continuously checking on the pool. It is never recommended to leave your home during this time or to fill your pool overnight.
How Long Does It Take To Fill A Pool? - YouTube
Generally, fire departments will not fill a residential swimming pool. Filling the pool could be a potential liability, plus, the water the fire department uses for your pool isn't putting out fires and saving lives.
For others that are filling a much larger pool it could take multiple days until your pool water has reached capacity. Assuming your water pressure is pumping at 8 gallons per minute (480 gallons per hour) through your outside water hose, it would take 31.25 hours to fill a 15,000 gallon swimming pool.
The cost to fill a pool with water ranges from $4 to $10 per 1000 gallons (3785 liters) for an average-sized pool. Cheaper methods of filling water will cost an average of $80-$100 in total, while more expensive methods could cost as much as $1500-$2000 for an average-sized pool.
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Basic Per-Gallon Formula.
Pool Size by Gallon | Cost |
---|---|
20,000-gallon pool | $180 |
25,000-gallon pool | $225 |
30,000-gallon pool | $270 |
Will my pool fill faster with two hoses?
Adding the second hose will not double the flow, but should only make it as if a single hose was fed by a 3/4" pipe.
Wait about 20 minutes after adding balancing chemicals to your newly filled pool, and you should be good to swim. Calcium chloride – If you have hard water issues, it's advised to wait about 2-4 hours before swimming after adding calcium chloride to soften your pool's water—or until one filter cycle has been completed.

So.. to fill 10,000 gallons it would take ~25 hours.
With the warmer weather recently, some people were thinking of filling up their pool. However, if you are filling a pool, you shouldn't use a fire hydrant. While using a hydrant may be quicker, it can be very dangerous.
Overall, you can fill your pool with well water but your well should be able to handle the water supply load. If not, you can run the well dry. You should also treat the water after filling the pool so you can get clean and not murky pool water.
Based on water bills, many pool owners find it cheaper to hire a water truck to fill their pools as opposed to using their garden hose.
You can fill your pool with a hose from the tap, just like you would with city water. But remember that you'll be moving many thousands of gallons of water through your softener system, so be sure to factor in the cost of salt and the electricity required to pump the water to your pool.
Wall buckles are normal for above ground pools but filling when the sun goes down should cease immediately as it can pull the walks down and destroy the pool.
up to 6,423 gallons (18 ft. by 48 in.). With a 44 gallons per minute flow rate, it will take about 27 minutes to 146 minutes to fill your Intex Metal Frame pool depending on its size.
For example, for a 12' x 24' pool 4 ft. high you would multiply 12 x 24 = 288. Then 288 x 4 = 1,152. Then 1,152 x 7.5 = 8,646 gallons needed.
How do I fill my pool without an outside tap?
Filling kids paddling pool from sink hack! - YouTube
So.. to fill 10,000 gallons it would take ~25 hours.
The 10ft Intex Easyset is c. 3600l. It took me about 6 hours to fill with good water pressure.
Capacity Gallons | Hours 7 GPM | Hours 10 GPM |
---|---|---|
< 1,000 | < 2 1/2 | < 2 |
5,000 | 12 | 8 1/3 |
10,000 | 23 3/4 | 16 2/3 |
15,000 | 35 3/4 | 25 |
up to 6,423 gallons (18 ft. by 48 in.). With a 44 gallons per minute flow rate, it will take about 27 minutes to 146 minutes to fill your Intex Metal Frame pool depending on its size.