Well crap, I drink tap water all the time and I thought that was good. It’s really all I drink, coffee and water. How do I get low nitrate water?
People who live on property near areas which use fertilizer for grass or for crops, naturally get high nitrates.
I grew up in such a place and we had to treat our water.
More here:
https://bluwaterlabs.com/how-to-remove-nitrates-from-well-water/