Castle Water
858 S Washington St
Greencastle, PA 17225
Phone: (800) 323-7321
Refreshing Clean RainSoft Drinking Water and Kitchen RainSoft Water Filtration Systems Bath and Body RainSoft Water Treatment RainSoft Water Softeners and RainSoft Conditioners for Softer, Cleaner Laundry

RainSoft of Southern Pennsylvania – Castle Water

Castle Water was founded by Chad Clay in 2004 and is committed to providing clean, quality RainSoft water to consumers in the Cumberland Valley areas.

We offer the best drinking water and the largest variety of water treatment products and services available for your home or business including water softeners, water filtration systems, reverse osmosis drinking water systems, equipment installation, and repair service. RainSoft products are built to last and are backed by a 100% satisfaction guarantee as well as the best trained and experienced service technicians in the industry.

RainSoft of Southern Pennsylvania, an authorized RainSoft Dealer.

Castle Water
858 S Washington St
Greencastle, PA 17225

Phone: (800) 323-7321


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News From RainSoft

Water from "Soft" to "Hard"

When water falls in the form of rain it is clear of impurities, in other words it is "soft." As it falls water picks up carbon dioxide and other impurities in the air. Soaking through the earth and running off into rivers or lakes, water dissolves calcium and magnesium salts. If water picks up a substantial amount of dissolved rock, calcium carbonate and other substances, it become "hard." The US Geological Survey calulates that about 90% of US homes have hard water. There are also indications that water is becoming even harder due to increasing demand. Increased demand lowers the water table, which causes a greater draw-off at the surface and raises the natural hardness of water.

RainSoft water softeners can counteract the effects of hard water. Contact us for a free in-home water test and find out how RainSoft can imporve the quality of your water.

RainSoft Water Treatment Systems

RainSoft improves the Quality of Life for our customers and their families by offering them environmentally responsible air and water treatment solutions for their homes.

RAINSOFT DRINKING WATER SYSTEMS that provide bottle-quality, crystal clear water for drinking and cooking...without the plastic bottle.

RAINSOFT WATER TREATMENT SYSTEMS that save money by reducing energy and soap consumption. Water-using appliances last longer, and bathing and shower has never felt better!

AIR PURIFICATION for the entire house, not just one room. RainSoft air purification products mount directly into the duct, providing protection and peace of mind...silently and out of sight.

It has been over 55 years since the first RainSoft water conditioner was sold from a small garage just outside of Chicago, Illinois. Since that day in 1953, RainSoft has become an industry leader in treating, filtering and softening water for well over one million homes and businesses throughout the world.






Serving Africa, Altenwald, Aqua, Beautiful, Biesecker Gap, Big Pool, Big Spring, Bino, Boggstown, Boonsboro, Bricker Dev, Cascade, Chambersburg, Charlestown, Cheesetown, Clay Hill, Claylick, Clear Spring, Concord, Cosytown, Cove Gap, Cowans Gap, Cowans Vlg, Cress, Dickey, Doylesburg, Dry Run, Duffield, Eastland Hill, Fairplay, Fannett, Fannettsburg, Fiveforks, Fort Loudon, Fort Ritchie, Fox Hill, Franklin Furn, Ft Loudon, Gapland, Glen Forney, Good, Greencastle, Greenvillage, Guilford Sprs, Guilford Township, Hagerstown, Hancock, Highfield, Housum, Jackson Hall, Kasiesville, Kauffman, Keedysville, Kerrstown, Kerrstown Sq, Letterkenny Army Depo, Lurgan, Markes, Mason Dixon, Maugansville, Mercersburg, Metal, Milnor, Mont Alto, New Franklin, Northern, Nyesville, Orrstown, Pen Mar, Pennersville, Peters, Pleasant Hall, Polktown, Pond Bank, Red Bridge, Richmond Furn, Roadside, Rohrersville, Saint Thomas, Sharpsburg, Shimpstown, Smithsburg, Spring Run, St Thomas, Stoufferstown, Sunbeam, Sylvan, Tomstown, Turkeyfoot, Tuscarora Hts, Upper Strasbg, Upperstrasbrg, Upperstrasburg, Upton, Wayne Heights, Waynecastle, Waynesboro, Welsh Run, Weltys, Williamsport, Willow Hill and Worleytown located in the counties of Franklin and Washington in the states of Maryland and Pennsylvania