I agree with you that they should be caught and held accountable. I a wary of forcing them to reimburse the county though. That has turned into a real boondogle for counties. Public works and expensive labor to build them mean that this restroom probably had a bunch of over-priced extras and cost a fortune.
Counties and townships have tried to force people "at fault" in accidents or for fires to pay the cost of police or fire services too. Once again, I understand the desire to hold people to account but the government offloads a bunch of overpriced, union rate costs onto the citizens in doing so. The cost imposed is much, much higher than it should be.
That can be a problem. Our public buildings certainly seem to be very expensive these days. We're building a new high school, and it's often referred to around here as the Taj Mahal. It was approved before the economy tanked at a price tag of ~$115 million. I doubt the taxpayers would have gone along with it had the vote come a year or two later.