Our water company was all up in my grill this year. Our bills kept getting higher, despite conservation measures. We had a plumber out multiple times - replaced all toilet flappers, checked all fixtures, no leaks anywhere.
They kept swearing we were using the water reflected on the bill, we kept swearing we were not. We had them put a logging meter on to help us identify when the water was being used. Our useage immediately dropped to about half of what other similar households were using.
They actually ADMITTED to a faulty meter and refunded our fines. Was expecting them just to fade back into the background and refuse to talk to us.