water here in Liverpool is about 200TDS so not soft..!!
You need RO system.
Steve, that surprised me, I thought you were getting it from us, over here in wales. My TDS is 52-55, Llandudno is 42, and Barmouth 19 ppm. I think Prestatyn is pretty high though, so you must be a tad unlucky with a 200 reading.
I am getting 5 months out of each bag using 2 Di vessels in tandem. That's DI only of course. Dai