2018 topic archive

Browse the water-treatment subjects represented in the 2018 archive.

A subject index

Use the topic links below to find current explanations of hardness, filtration and equipment identification. The year labels organize older references; they do not date the present writing or establish current product availability.

Start with salt-based and salt-free comparison, hard-water areas or the complete guide index. Product notes avoid old prices, personal testing claims and unverified certification statements.

Browse by subject

• Under-sink water filters

  Treat a selected drinking-water outlet while keeping equipment out of the way.

• Countertop water filters

  Compare accessible equipment without assuming every countertop arrangement uses the same process.

• Whole-house water filters

  Entry-point treatment needs a clear purpose and enough information about the supply.

• Water filter pitchers and dispensers

  A convenient container still needs the correct cartridge and a realistic maintenance routine.

• Reverse-osmosis water filters

  Compare the complete system, not the number of stages in a headline.

• Salt-based water softeners

  Ion exchange reduces hardness; sizing and operating settings determine routine use.

• Salt-free conditioners and alternatives

  Separate a scale-related claim from actual removal of calcium and magnesium.