Like the title says. Will I see much benefit from upgrading to a reverse osmosis system in this instance or would the gains be inconsequential? Thanks!
120ppm is alittle high but not too bad, I'd say if your Ph is good then r/o water wil not make much difference .
Do a search for a report on your local municipality's water quality report. You may be so digusted by what that 120 ppm consists of that you will want to use an alternative. See if a city close to you is in here: How Clean is City Water? View EWG's Big City Water Ratings | Environmental Working Group