The 3 things I learned when I had my foundation repaired that shocked me: city maps of utilities can be wrong

https://www.scribd.com/document/1036194342/Thinking-of-Foundation-Repair-Near-Me-3-Things-to-Know-First-138581

The 3 things I learned when I had my foundation repaired that shocked me: city maps of utilities can be wrong, private lines hide everywhere, and 811 marking is non-negotiable.