Interestingly, Coffee Chronicler says the ideal TDS for filter coffee is a bit lower, ideally 30-100 PPM: https://coffeechronicler.com/best-water-for-coffee/
Interestingly, Coffee Chronicler says the ideal TDS for filter coffee is a bit lower, ideally 30-100 PPM: https://coffeechronicler.com/best-water-for-coffee/
TDS meters are cheap, around $15. If I were to buy a new one, I’d look for one that could also read the pH level.