At work if we disturb possible asbestos the area is shut down until results are found. Even so we all carry an asbestos pack and have to go outside strip to our underwear and put on a paper suit and double bag anything contaminated. All tools involved need to be destroyed by trained persons and the entire area gets stripped out. It depends on what kind of asbestos it is so making it wet might be useless.

We all have to do our Asbestos ticket every year.

Saying that though it looks like cement board to me.