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Mountain Water Co.

Add Ons

Water treatment add-ons

Extras that solve one specific problem. You don't need these to have good water — you add them when your water, or your household, calls for it.

A stainless steel whole-home ultraviolet water purifier

Whole-Home UV

Ultraviolet disinfection, usually for wells.

An ultraviolet lamp the water passes through on its way into the house. It is the standard answer to a well that has tested positive for bacteria. It does nothing for hardness, iron or taste — it is for one job only.

Best for: Private wells, especially after a positive bacteria test

Details and specs

Worth knowing

Why this matters

Remineralization for taste

Reverse osmosis is thorough enough to remove beneficial minerals along with the bad. The alkaline filter puts calcium and magnesium back, which is what stops RO water tasting flat.

UV for biological safety

Ultraviolet light neutralizes bacteria without adding any chemical to your water. Standard practice on well water, and worth having anywhere boil-water notices happen.

System info and pricing

Find the right water system

Call or fill out the form and tell us what you're seeing — scale, stains, a smell, city water or a well. We'll tell you which system fits your home and what it costs. There's no system that fits every house, and sometimes the answer is that you don't need one.

  • Call or fill out the form
  • City water or private well
  • Monongalia, Marion & Harrison