Nationwide Boiler Inc. (Freemont, CA) has skid-mounted water softeners for sale, lease, or rent. These newest additions to the company's line of boilers and boiler-related equipment were developed primarily for treating boiler feedwater. However, the company says they can also be used in any industrial or institutional application where large-scale, automatic water softening is a requirement. They are duplex units available in sizes from 210,000- to 750,000 grain. Continuous treated-water capacity is from 39 gpm to 140 gpm.