20+ yrs ago (about 15 after pouch creation) I got hit with a pain from hell that kept coming back in every increasing waves...called a friend...she called an ambulance. I was shrieking!
That says a lot for me who usually doesn't make a peep.
The ER doc on call guessed where I lived and what I had even before doing any tests...And told me that my neighbourhood was known for kidney stones (??!)...turns out that high lime deposite (calcium) in the drinking water leads to this too (kind of a paradox...the more you drink, the more you get!)
His advice? Stop drinking tap water and Never drink mineral water. Only drink filtered water.
I bought a brita and have used it ever since. I cook with it, make coffee and tea and have one in my ice cube maker too. I only get stones back when I go long periods without using the filter like on vacation or when I get too lazy to change the filters.
It may not be a 100% solution but it does help a lot.
Sharon