Swimming pools in Central Texas evaporate lots of water. Typically, 3-4 feet per year! Guess what is left behind?
the hard water “stuff” that causes mineral deposits or scaling
a chlorine stabilizer, also known as CYA, left behind by popular chlorine tablets
the soap and detergent residues from laundered swimwear
Body oils and organics
especially from kids and pets
Metals, salts, and all kinds of other contaminants