How Much Should a Pool Evaporate in 24 Hours? On average, swimming pools lose about a quarter of an inch of water each day, yet variations in wind intensity, humidity and sunlight can drastically change water loss rates. Some of the strongest and most intense wind in the country can be found in mountainous regions.
How much water does my pool need to refill from evaporation? The average amount of water evaporation during the summer is approximately half of an inch loss per day. Multiplied by seven days, that's 3.5 inches per week. Use the calculation below to get a monthly estimate of the evaporation rate of your pool.
Pool Is Losing 1 Inch of Water Per Day
Losing more than ½” of pool water per day indicates you likely have a leak in your pool's structure or your pool pump system.
The average pool water evaporation rate is about a quarter of an inch of water per day or more than two inches in a week, which on a 33′ x 18′ swimming pool (an average pool size) is more than 2500 liters or approximately 600 gallons a week; this may vary depending on your climate and the factors listed above.
Place a bucket on the step of your pool, making sure the water level is the same both inside and outside the bucket. Mark the water level in the bucket and the pool water level on the outside. Wait 24–48 hours, then check the loss of both. If the pool loses more water than the bucket, then you have a leak.
Eight hours is usually a minimum. In the dry season, water will need to be added to your pool each week. If you are adding more than 2″ of water/week, you probably have a leak. Pool leaks are pretty common; we detect and repair them every day.
Just because your pool is losing water doesn't necessarily mean that there is a leak. Natural water loss will occur because of evaporation, especially on sunny days. Heavy use will also cause water to leave the pool due to splashing and swimmers who are exiting the pool.
How Much Should a Pool Evaporate in 24 Hours? On average, swimming pools lose about a quarter of an inch of water each day, yet variations in wind intensity, humidity and sunlight can drastically change water loss rates.
Low humidity equals high evaporation that takes water out of your pool. Low rainfall also means that the water that is lost is not replaced. High wind can also affect the amount of water your pool loses by drawing moisture from the top of the pool out at a higher rate.
Use the Pool Leak Detection Dye to Pinpoint the Leak.
Without touching the water, squirt the dye in the water close to the surface and the wall. If the leak is near, you will see the dye move towards the exaction location of the leak like a current.
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.
The most common places that pools leak are the areas where two different materials meet, such as near the skimmer, drains, or returns or at the tile line. Depending on your surface type, pools can also leak through cracks in the finish of the exposed aggregate, marcite or gunite of your pool.
Pool Covers
Using a pool cover can prevent up to 95 percent of pool water evaporation.
The warm temperatures during the day heat your pool up, then the cooler temperatures at night cause the water to evaporate. This happens throughout the evening, until the sun comes out to warm the pool water again.
The Amount Of Chlorine
The concentration of chlorine in the water is one of the major factors that affect the rate of evaporation. The more chlorine the water contains, the faster it'll evaporate.
Evaporation occurs whenever you expose wind or air to the surface of your pool. So in short, this applies to every pool, all the time. Water molecules rise to the surface, form into a vapor and eventually get released into the air. Heated pools on cool nights experience evaporation more rapidly.
Common Causes of Pool Evaporation
For example, high temperatures, lots of humidity, and high winds can increase your pool's evaporation rate. Pools without enclosures or tree cover will also evaporate faster than those with shade and protection because they are more exposed to the weather elements.
Over the ocean, evaporation appears to remain constant, both day and night. Water in the air in gas form is known as water vapor. The molecule is now fresh water, having left the ocean salt and other particles behind.
During the cooler months of the year, it's common for pools to experience water loss. If your pool's water level is looking low, this may be why. Water evaporation occurs year-round, no matter what season it is. However, it can be intensified by the elements in colder seasons, like fall and winter.
High humidity equals very low evaporation, whereas low humidity equals high evaporation. The air is like a towel or a sponge: The drier the air is, the more water it can hold thus increasing the evaporation rates from your pool.
As a general rule, most pools will lose about ¼ inch of water a day or about two inches in a week. In warmer and more humid climates, such as Miami and throughout Florida, this number could climb a little higher, although that water may be replenished with rainwater.
Standing Water
And if you stand by your pool, make sure you feel the nearby grass. If the grass feels mushy or uneven, this is a sign of an underground leak. Either way, these are key indicators that you could have a pool leak, and you should contact your local pool leak detection company as soon as possible.
Pour some pH Indicator Reagent into the pool near any visible cracks. Watch closely to see if it moves closer to the crack (or even gets sucked out). If it does, the crack is deep and leaking water.
The frequency at which you need to add water can vary depending on a number of factors such as weather conditions, usage, and evaporation. In general, check the level at least once a week and add water as needed.