Photo credits

Photos on this site are used under the licences below. Photos marked cropped were trimmed to fit the page and remain under the same licence.

Product photos on the product cards are the manufacturers' own images of their products.

• A tub spout aerator crusted with calcium scale from hard water in southern Arizona: photo by Bbypnda, CC BY-SA 3.0 (cropped)
• A twin-tank water softener beside its brine tank: photo by Muselsom, CC BY-SA 4.0 (cropped)
• The control valves on top of a twin-tank water softener: photo by Muselsom, CC BY-SA 4.0 (cropped)
• Salt pellets in an open brine tank: photo by Muselsom, CC BY-SA 4.0 (cropped)
• Flakes of limescale chipped out of a kettle: photo by Alexander Davronov, CC BY-SA 4.0 (cropped)
• A pressure tank and pump connected to a water well: photo by W.carter, CC BY-SA 4.0 (cropped)
• Activated carbon in powder and block form: photo by Ravedave, CC BY 2.5 (cropped)
• Limescale flakes in the bottom of a water kettle: photo by Julo, Public domain (cropped)
• A water softener tank installed on a rooftop supply line: photo by రవిచంద్ర (Ravichandra), CC BY-SA 4.0 (cropped)
• Beads of ion exchange resin: photo by Tomásdearg92, CC BY-SA 3.0 (cropped)
• A pile of ion exchange resin beads: photo by Tomásdearg92, CC BY-SA 3.0 (cropped)
• Water supply pipes and shut-off valves in a basement ceiling: photo by Tomwsulcer, CC0 (cropped)