Tweet
Hello,
Recently purchased a house on well water and had the county extension test the water as there was a slight metallic taste and brown staining on the existing bathtubs and dishwasher interior. Results:
pH: 7.5
Hard: 4.5gr
Calcium (Ca) 24.4 ppm
Chromium (Cr) negligible
Copper (Cu) negligible
Iron (Fe) negligible
Magnesium (Mg) 4.0 ppm
Manganese (Mn) 0.12 ppm
Molybdenum (Mo) negligible
Nickel (Ni) negligible
Phosphorus (P) 0.02 ppm
Potassium (K) 2.7 ppm
Silica (SiO2) 43.91 ppm
Sodium (Na) 14.2 ppm
So overall, that seems pretty minor, no need for softening that we've noticed but since we've got the existence of staining I'm wondering what reasonable options are for managing the Manganese. Seems like greensand or filox-type backwashing filters are the standard answer for this, but also that they're typically used for a combined iron+manganese concentration up to 5-10ppm. I've also seen catalytic carbon filters suggested, likely with the need to pre-aerate.
Wondering if it's worth trying a catalytic carbon filter (KDF-85?) by itself to start as a cheap option that may address the manganese at these levels, before jumping to greensand or similar.
Recently purchased a house on well water and had the county extension test the water as there was a slight metallic taste and brown staining on the existing bathtubs and dishwasher interior. Results:
pH: 7.5
Hard: 4.5gr
Calcium (Ca) 24.4 ppm
Chromium (Cr) negligible
Copper (Cu) negligible
Iron (Fe) negligible
Magnesium (Mg) 4.0 ppm
Manganese (Mn) 0.12 ppm
Molybdenum (Mo) negligible
Nickel (Ni) negligible
Phosphorus (P) 0.02 ppm
Potassium (K) 2.7 ppm
Silica (SiO2) 43.91 ppm
Sodium (Na) 14.2 ppm
So overall, that seems pretty minor, no need for softening that we've noticed but since we've got the existence of staining I'm wondering what reasonable options are for managing the Manganese. Seems like greensand or filox-type backwashing filters are the standard answer for this, but also that they're typically used for a combined iron+manganese concentration up to 5-10ppm. I've also seen catalytic carbon filters suggested, likely with the need to pre-aerate.
Wondering if it's worth trying a catalytic carbon filter (KDF-85?) by itself to start as a cheap option that may address the manganese at these levels, before jumping to greensand or similar.
Comment