Well water is commonly used by pool owners to fill up their swimming pools, however it should be known that such a source contain high levels of metals. Iron, copper, and manganese can stain a pool wall or vinyl pool liner if left untreated. Blue Wave’s Super Rust and Scale Remover prevents metal stains from occurring, which is why it is highly recommended to all pool owners who choose to fill their pools with well water. It is recommended that even pool owners who do not use well water should test their pool water for high concentrations of iron or other metals each spring.