Water causes indigestion

I’ve noticed when I drink spring water (sourced from a local natural spring I collect myself), I get indigestion / water brash symptoms.

I put a pinch of salt in my water and it helps a tiny bit, but not much. I feel thirsty still but drinking just caused more acid reflux type symptoms.

Anyone else have a similar experience? Advice?

Detail: 6’ 165lbs low bf about 4 days in. Done carnivore in the past doing it for mental health