Filling a swimming pool with well water typically takes several days and requires a cycled approach to prevent the well from running dry or the pump from overheating. Most residential wells pump between 5 and 20 gallons per minute (GPM); at 10 GPM, filling a 15,000-gallon pool would take roughly 25 hours of continuous runtime, which exceeds the safe limits of many residential systems.
Yes, it is physically safe to fill a pool with well water, but it requires careful planning. The process requires managing your well's capacity to prevent running the pump dry, and treating naturally occurring minerals (like iron and calcium) to avoid stained or murky pool water.
For a 15,000 to 30,000-gallon pool, expect to pay $60-$300 for a pool fill. With well water, all you pay is the electricity bill to power the well pump below the ground. On average, electricity costs about $25-$75 for most homeowners, though this price depends on a few factors.
Well water can absolutely work in your pool. Success depends on understanding your specific well water quirks and staying ahead of potential issues. Testing before filling saves headaches. The right treatment plan keeps your water clear and equipment running smooth.
Filling a pool with your well can indeed burn up your well pump, primarily because it risks running the well dry or causing the pump to cycle on and off too rapidly. To do it safely, you must know your well's recovery rate and pace the fill to prevent exhausting your water supply.
Filling a 10,000-gallon pool costs between $40 and $1,200, depending entirely on your water source and location.
How to Fill a Swimming Pool With Well Water
For concrete or gunite pools, the shell is often the single most expensive component. Furthermore, it requires extensive engineering and highly specialized labor.
Filling a pool usually takes anywhere from 12 to 48 hours, depending on your pool's size and your hose's flow rate. Divide your pool's gallon volume by your hose's gallons per minute and you'll know your fill time in minutes.
Treating a pool with well water primarily involves managing high levels of dissolved metals (like iron and manganese) that can stain surfaces and turn the water cloudy, brown, or green when exposed to chlorine.
Baking soda (sodium bicarbonate) acts as a natural buffer that raises both your pool's total alkalinity and its pH. It prevents severe pH fluctuations (known as "pH bounce"), clears cloudy water, prevents equipment corrosion, and helps your chlorine sanitize more effectively.
I've had this in my pool when I add well water and chlorine at the same time. It can turn the copper in the water green or the iorn in the water brown. I have had good luck with "metal out" to clear up way worse looking water. Your well water has metals that discolor when they hit your pool water.
Generally speaking, pools lose approximately 1/4” of water per day on average, though this can vary due to factors like wind, temperature, humidity and of course, the pool's total surface area.
When temperatures drop below 20 degrees, it usually takes six hours for insulated pipes to freeze, while temperatures between 20 and 32 degrees are likely to freeze pipes after about 12 hours. Knowing how long a freeze can take to set in can help you keep your pipes from freezing.
Flushing a chlorinated (shocked) well typically takes 1 to 3 days of continuous or intermittent pumping, though slight residual odors can linger for up to a week. The exact time depends on your well’s depth, pump flow rate, and the amount of chlorine used.
The term ghost pool generally refers to one of three things, depending on whether you are talking about billiards, public history, or swimming pool construction.
A cowboy pool (also known as a stock tank pool) is a large, galvanized steel livestock tank that has been repurposed into an above-ground swimming pool or soaking tub. They serve as a popular, budget-friendly alternative to traditional in-ground pools.
It is perfectly fine to fill a pool with well water, and it will save you hundreds of dollars in water delivery. However, unlike treated city water, well water is raw and often contains high levels of minerals and metals like iron, which can stain your pool or cause the water to turn brown or green once you add chlorine.
Unless you have a very high-yield well, don't try to fill continuously: Session length: 6-8 hours maximum. Recovery time: Let well recover overnight (8-12 hours) Plan ahead: Start filling 1-2 weeks before you need the pool.
Overuse: Filling a pool requires a lot of water, which can overload the well pump. If the pump runs continuously for a long period without rest, it may overheat and become damaged. Insufficient priming: If the pump is not properly primed, i.e. filled with water before starting up, it may be damaged.
During swim season, a simple rule of thumb is to run the system 1 hour for every 10°F of air temperature. For example, at 100°F, run the pump at least 10 hours per day. If you're fighting algae or recovering from a major weather event, you may need to run it 24 hours until the water clears.
Adding vinegar (acetic acid) to a pool temporarily lowers the water's pH and helps dissolve calcium buildup. However, it is a weak acid. Because you need massive quantities to adjust pool chemistry, it introduces organic sugars that can feed bacteria and algae.
Pool size – Larger pools require more gallons or truckloads of water, increasing costs. Fill method – Using a garden hose costs $40 to $200 while hiring a water delivery service costs $300 to $2,000 to fill a 10,000 to 20,000-gallon pool.