I have obtained water profiles from a number of extract producers. Most are fairly innocuous. However, Breiss is burdened by their water supply from Chilton, WI. It is FULL of sodium due to the city's use of ion-exchange softening for their water supply. Extract brewers would be wise to steer to producers like Muntons, Coopers, and Alexanders. I have confirmed that none of those producers have excessive ionic content.