We should make it clear right away that Watermart is able to offer two different manufacturers Alkaline water systems. Selling these systems is good business. However, our most important benchmark for any water system are water cleanliness and serviceability.
Concerning cleanliness: These alkaline water systems usually contain only a single filter which uses granular activated carbon as it’s main filtration media - this is in contrast to the extruded carbon blocks which are used in Watermart systems. Extruded carbon offers more contact time between the water and the carbon - thereby reducing organic compounds more thoroughly than granular carbon. Also, granular carbon has a shorter life span and is much more susceptible to bacteria growth (this is because there is no defined pore structure and the bacteria has lots of room to grow in the spaces).
Concerning serviceability: Filter changes also should be taken into account. Alkaline water filters filters are proprietary, meaning that if the company discontinues your model, you may not be able to get replacement filters.