At the request of people, I decided to do a TDS test of four more brands of bottled water that you can buy in Saigon. Please note, as some people will emphasis, I am just doing a TDS test to decide how pure the water is. For purposes of this test, anything below 50 ppm indicates the water has been purified an "most likely" safe to drink. My last water quality article provides … [Read more...] about More bottled water tests