With water as hard as yours, a softening filter will not be sufficient. A water softener is the best, most efficient and least expensive (over the long run) way to go. We have water softener systems, but they are not on our web site yet. If you are interested in going that direction, we could provide you with more info upon request. However, soft water does not usually taste very good, so you will still want an under sink system for drinking and cooking water. The US-1500 is a good choice, but will not come close to the quality of filtration provided by an RO system. If you are concerned with waste water, this link
GE Merlin Tankless Reverse Osmosis System 1255052 GE Merlin RO System will take you to the latest in RO technology that wastes significantly less water. RO systems typically have a good water to waste water ratio of 1 to 5, but the Merlin has a ratio of 1 to 2. If you decide against RO the US 1500 will do a nice job of filtration. Here are a couple of filters that will work nicely for that system. This first link would be an excellent sediment filter
ECP1-10 water filters and Pentek ECP110 sediment filter cartridges 255481 for home water filtration followed by
CBR2-10 water filters for lead reduction and Ametek CBR210 carbon water filter 155268 a really good quality carbon block filter to get even more contaminants and improve taste and odor.
Thank you,
WaterFilters.NET