Salt water pools are becoming more common as people find that they are a little more refreshing to swim in. Also, as chlorine tends to bother some, salt pools might be a good alternative.
Usually saltwater.
No
There are an estimated 5.2M installed inground pools in the united states
Yes, saltwater is a common noun.
It could be fatal.
Under no condition do fiberglass pools have "ripples" on the bottom after they are installed. Of course, the pool could have been damaged in some way, then improperly repaired, before or after it was installed.
Mostly underwater brine pools and saltwater springs.
Salt water pools
Hydrochloric acid and potasium help alot
Saltwater makes up a majority of the oceans. It is a habitat for sea life of all sorts. It is also now used in personal pools.
All pools need something to help keep it clean and safe. Chlorine has long been the sanitizer of choice. Saltwater is no different, as the charged cell breaks down Salt in the water into Chlorine.
Obviously the pool floor is not smooth.