When people hear the word "saltwater," most think of the water in oceans. In the swimming pool industry, the terms "salt pool" or "saltwater" refer to the use of a salt chlorine generator to sanitize the pool. Saltwater pools are called such because enough salt is added to the pool water in order for the generator to function. So how much salt is actually in a saltwater pool? The answer is around 3,000 parts per meter.

The concentration of salt in a saltwater swimming pool is less than the amount that is noticeable to people's taste buds. Swimmers can rest easy knowing that they won't find any salt residue in their hair or on their skin. While swimmers won't be aware of the salt's presence in the water of the swimming pool, the salt is actually part of a chemical reaction that creates chlorine for pool sanitation.

Salt is added to the water of a saltwater swimming pool through a salt chlorine generator. Inside the generator are metal blades which are coated and receive a low voltage current of electricity. Electrolysis occurs as the saltwater flows through these blades, splitting the water and salt into hydrogen and hypochlorous acid, which is used instead of chlorine tablets needed to sanitize traditional chlorine-based pools.

This electrolysis is constantly repeated as salt is converted into acid and then back to salt, as the salt never evaporates. Once the necessary parts per meter of salt is reached in the water, only a very small amount of salt is injected into the pool when needed. Salt levels in saltwater pools are affected by factors such as heavy rain, which causes dilution of the salt concentration, and heavy usage of the swimming pool, when pool water may be significantly splashed out.

The chlorine generated by the process of electrolysis is less harsh than the chlorine used in traditional swimming pools. The salt-based chlorine doesn't contain the smell of bleach, and is much gentler on swimsuits, hair, skin, and eyes. The water in saltwater pools also has a softer feel to it. Another benefit to using a saltwater chlorine generator is not needing to buy or store a large amount of chlorine. Chlorine produced by salt is also considered to be more natural and healthier than the typical commercial chlorine.

You can also learn more on water conservation for swimming pool owners.

There are some factors that should be considered when thinking about installing a saltwater pool. The initial investment for the saltwater chlorine generator typically ranges from around $600 to $1,200 depending on the size of your swimming pool. Additional features you may require could put the cost of the generator on the higher end. Some of these systems are more energy efficient and feature automation. Initially, you'll have to buy several pounds of salt to get the pool up and running. After that, maintenance is minimal and not that costly. Salt can also cause corrosion of pool equipment, so if you're considering a saltwater pool, it may be best to invest in pool equipment that is "salt-friendly."

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