The Crystal Pure CTOCLS200 kit sits on top of the bench and has a chrome diverter valve that attaches to your tap spout. The diverter has a lever that is used to divert the tap water from the main faucet through to the inline purifier. The CTOCLS200 purifier is Silver Impregnated which makes it bacteriostatic, inhibiting bacterial growth within the filter. This model is suitable for rainwater supplies when an inline option is required; however, we also recommend 1 micron filtration at the pump outside the house to protect against Giardia and Cryptosporidium.