Holy crap! I have been using 170ppm TDS water!

[Aquattro]

Originally Posted by H2o2

I live on okanagan lake

Usually when I talk about water contamination, I'm referring to a year I lived in Kelowna and the entire drinking water distribution circuit was shut down due to toxins in the water. If someone had done a water change that day before the emergency was declared, I'd guess they'd lose their whole tank. It doesn't happen often, but it does happen. The Kelowna sewage treatment plant discharges directly into the lake, and while the water coming out is top quality, if there were an accident, the lake would be contaminated. The cost of RO is small compared to replacing everything in the tank