In my opinion, this would be unrealistic, in real life. If you put a printer in water, it would just break, not explode into bits and pieces, I know this is dark-rp or 'semi serious rp' but we need to have some sort of role-play in it and some kind of realism.
All staff have to do is noclip for two and a half seconds under the water on s2 to find if there is any printers and on s3 in the lake, honestly don't see why it needs to be prevented in such a game-breaking way, what if someone stole my printer, or prop pushed my car into water when I had a gpp in it because I was hiding it?