f you use well water or just need to soften, remove rust and calcium and/or simply have great tasting, safe water....these guys are THE BEST. I've used their system for our well and softening for 11 years and they are without a doubt the very best. Kevin Coleman is the owner in Austin and they are unlike any other company I've ever dealt with in service, quality of product, price...they're the real deal. And just extremely nice people!!!