Trumpy:
...the guy had dug a trench for a new pump water feed...
I'm not sure how things work over there, but in the US, every state has a "Call Before You Dig" or "One Call"
system . There are fines imposed upon one who digs without calling first (and gets caught or hits a cable/pipe).
In some neighborhoods, people have called the police thinking that someone was painting graffiti when they were marking the underground utilities!