Best Water SoftenerContentsInternal Threaded Tap Diverter Adaptor 905 SmallWaterways 1665 2750 Water SoftenerHard Water Areas: (complete Hardness (th) >a Hundred And Twenty PpmSingle Under Sink Water Filter SystemsWater FiltrationTo oxidise dissolved iron, chlorine is injected into the filter by the dosing pump before it can be filtered out. The ol