Can high water pH have caused Hans to develope stones?

This is something I'd like to check with other cat owners. My grandfather told me when Hans got sick that years ago they blamed human bladder stones on something in the drinking water.

I had taken a sample of tap water in to the fish store to get it tested to see if it would be okay to use if treated. The girl tested the pH three times before telling me it was off the chart. She had never seen anything like it before. Their tests could only measure pH up to 9.5, and it's likely that my tap water here is around 11, or possibly more. I have to see about getting a test kit myself or finding a place that can measure higher levels.

Could this have caused Hans' bladder stones, instead of a change in diet like the vet and I had previously thought?

I am not sure, but maybe you could look into a water filter for his water source? That should help with PH right?

There has not been any conclusive evidence of water causing stones/crystals with cats. Most experts are still trying to narrow it down but for now it seems to be the luck of the draw.

I would certainly mention it to your vet, and I'd begin using bottled (not distilled) water for your cat.

I have to call to re-order food soon, and I was going to see what he though. (He'll probably think I'm even more of a hypocondriac pet owner. It's one of the reasons I posted here first, to see if people thought I was nuts. )

I did realize while I was at work today that the two other cats I know that live in my city have had stones, too. (Everyone else I know lives in the surrounding area, and has a different water source.) I know that three out of who-knows-how-many cats having problems probably doesn't mean much, but I can't help but wonder if there might be a trend.