Doby M - whole house taste and metals filtration

Heavy metals (lead),  taste, odour, chlorine, and sediment filtration with this single Doby setup - removes metals and improves taste and odour while also removing chemicals and sediment from your cold water tap supply.

Do you have to install a mains water filter under the sink?

No, you don't. You can install your mains water filter wherever the cold water supply enters your house. This could be a utility room, garage, or other location.