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

https://danteqnac495.rivetgarden.com/posts/foundation-repair-and-basement-waterproofing-3-must-know-items-before-calling

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.