Water damage due to changing water pressure regulator/valve?
Hi,
Several days ago I had a plummer came to fix the water pressure regulator outside of my house that connects to the street main water supply, within minutes after he fixed it and left we had a water leak inside the house and flooded our wood floor, we called the plumber right away and he came back and checked and said the culprit was the drinking water filter we have under the kitchen busted but he denied that had anything to do with him changing the regulator. But the filter was working just fine before he came and the leak happened right after he fixed the regulator. My question is
1. Does he have to turn on a faucet inside the house after fixing a regulator, because he didn't even come into the house at all.
2. Do you think this was caused by him fixing the regulator or is it just my bad luck (a coincidence)?
Thank you very much.
Bill