I agree about testing. This is the first step in deciding what equipment will be required to produce minimal mineral water. When I had my borehole drilled (51 metres) my water test showed loads of calcium carbonate in amongst others. This was due to gypsum rock deep underground. The water was so hard that no amount of resin would fix it. Many metal water fittings including the jet pump venturi, which completely disintegrated, were affected. I stopped using the borehole water pretty quick and went exclusively with a 5.5 meter surface water well. Filters are zeolite, carbon and resin. The zeolite is good for many things including ion exchange which deals with heavy metals and softens water but also it's millions of tiny pores are very good at capturing suspended particles in the water. Then there is a carbon filter which collects more of the same but not quite so well then on to the resin filter which may seem redundant but, unlike the zeolite it should never need replacement. This is due to a rejuvenative saline cycle. The best people to see about water treatment in Buriram are a company called PP Water. They have a website.
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