Originally Posted By lori
Yep. There is no portable filter or purifier that will take out chemicals or minerals.

Salt water, runoff from fertilized fields or cow pastures, water running through tailings of old mines... all suspect and all untreatable with typical backpacking chemical purification or filters, or even the almighty First Need purification system.
I was watching the travel Chanel and they had a emergency salt water filter, looked like an oversized backpacking pump filter but was said to filter ocean water into fresh drinking water. On the show they said it was commonly carried on sail boats.

Sorry OFF TOPIC
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