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A Comparison of Water Purification and Filtration Systems
Substance Activated Carbon De-Ionisation Distillation KDF Carbon Ozone or UV treatment Reverse Osmosis Sediment Filter
Arsenic No effect Effective Effective No effect No effect Effective No effect
Cadmium No effect Effective Effective Partly Effective No effect Effective No effect
Calcium Hardness No effect Effective Effective Partly Effective No effect Effective No effect
Chlorides No effect Effective Effective Partly Effective No effect Effective No effect
Chlorine Effective 1 + Effective 1 + No effect 1 + No effect
Flourides No effect Effective Effective Partly Effective No effect Effective No effect
Lead No effect Effective Effective Partly Effective No effect Effective No effect
Magnesium Hardness No effect Effective Effective Partly Effective No effect Effective No effect
Nitrate No effect Effective Effective Partly Effective No effect Effective No effect
Phosphates No effect Effective Effective Partly Effective No effect Effective No effect
Sodium No effect Effective Effective Partly Effective No effect Effective No effect
Sulphates No effect Effective Effective Partly Effective No effect Effective No effect
Bacteria 2 + No effect Effective Partly Effective Effective Effective 9 +
Detergents Effective Effective Effective Effective No effect Effective No effect
Sediment Effective Effective Effective Effective No effect Effective Effective
Organics Effective No effect Effective Effective No effect Effective Effective
Pesticides Effective Effective Effective EffectiveEffective No effect Effective No effect
Viruses No effect No effect Effective No effect Effective Effective No effect
Aeration No effect No effect No No effect No effect Highly aerated No effect
Bad taste and odour Effective Effective No Partly Effective No effect Effective No effect
pH level Alkalizes Neutral 6 + Partly neutralises No effect Neutral No effect
Energy scource water pressure Resin-Ion exchange Electric condensation Water pressure Electric Water pressure water pressure
Key 1 + Integral carbon filter removes chlorine 2 + Silver activated carbon is partially effective 6 + Neutral Acidifies on contact with air. 9 + Micron rating must be 0.2 or better.