According to my Google searches, chloride is an electrolyte. I couldn’t find much info about where it comes from though. One of my theories is tap water, but I honestly have no idea.
Thank you!
Googles ‘sources of chloride’
‘Chloride is naturally found in small amounts in meat and seafood, but the main sources in the Western diet are sodium chloride, or table salt, and as an additive and preservative in processed foods.’
Different google prob ;-)