I just ran a test today and tap water is at 136.5ppm Caco3. I also have my new RO water system up and running and it reads 5 ppm Caco3 :)
I'll be around in the morning with 4 drums :)
To answer the poster in Louth yesterday, Cronan how does that 136.5 value compare against Cellbridge published numbers?
Not sure but the ppm numbers have being higher in the winter months.