Filters and softeners

Glass and jug of iced water with lime, lemon and mint on a bright white background

How do you filter tap water at home?

Run it through a filter jug, a tap attachment, an under-sink unit or a fridge dispenser. For a jug, Welsh Water advises running the cold tap first, keeping filtered water...

How do you filter tap water at home?

Run it through a filter jug, a tap attachment, an under-sink unit or a fridge dispenser. For a jug, Welsh Water advises running the cold tap first, keeping filtered water...

Glass jug of clear water with fresh flowers on a light wooden table beside a bright window

How does a water softener work?

A softener passes your water through resin beads that swap calcium and magnesium for sodium, called ion exchange. When the beads are full, the unit flushes them with salt water....

How does a water softener work?

A softener passes your water through resin beads that swap calcium and magnesium for sodium, called ion exchange. When the beads are full, the unit flushes them with salt water....

Glass mug of water with lime slices and mint on a table, with strawberries and small daisies beside it

What is reverse osmosis water?

Reverse osmosis (RO) pushes water through a membrane with pores below 0.002 micrometres, and the Drinking Water Inspectorate (DWI) says it removes most dissolved solids. The DWI adds that RO...

What is reverse osmosis water?

Reverse osmosis (RO) pushes water through a membrane with pores below 0.002 micrometres, and the Drinking Water Inspectorate (DWI) says it removes most dissolved solids. The DWI adds that RO...

A filter jug, a bowl of salt pellets and a glass of water in a row

Water filters and softeners: what they do, and ...

Filters take things out of tap water, most often for taste, while softeners swap the calcium and magnesium behind limescale for sodium. The Drinking Water Inspectorate (DWI) says tap water...

Water filters and softeners: what they do, and ...

Filters take things out of tap water, most often for taste, while softeners swap the calcium and magnesium behind limescale for sodium. The Drinking Water Inspectorate (DWI) says tap water...