does your reverse osmosis softener use salt ? can u guess where this is going ?
buy a gallon of cheap still mineral water and water with that, it could be sodium poisoning.
salt-based water softeners.
This type of water softener uses the ion exchange process to remove calcium and magnesium minerals from water. In this water treatment process, the calcium and magnesium are attracted to a media bed containing sodium ions. When the hardness ions stick to the media, the sodium ions are released into water, thus swapping the calcium and magnesium for sodium.