The document discusses options for preventing hard scale buildup in commercial water systems, including water softening and physical water conditioning. Water softening uses salt to exchange calcium ions, but wastes water and salt during regeneration and increases costs and environmental impact. Physical water conditioners promise complete protection without chemicals, but previous technologies have not delivered expected results. The document introduces Contra Calc, an advanced physical water conditioner that exceeds expectations by converting calcium ions into a non-scaling form using an energy field, without chemicals or waste. It provides complete site protection with low maintenance.