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

https://angeloceuu758.lucialpiazzale.com/residential-foundation-repair-explained-3-steps-to-take-before-calling-a-company-1

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.