Not strictly water softner, but

[Sunny1]

it might be interesting for you to participate in a class project (another survey!) on water treatment.

the survey is about devices for treating water for daily use: what methods are used, preferred and by who. Here is the link

http://water-treatment.questionpro.com/

Thank you for your participation :)

[Akpsdvan]

To what end?

[Peter Griffin]

Exactly, to what end? who gets this information and who cares?