Is this considered tenant responsibility damage?

[Jason Kucharski]

I have a studio apartment that the tenant just moved out of. After assessing the state of the property, they failed to tell me that the sink faucet had been obviously leaking which in turn, damaged the counter and cabinet. Also the tile in the shower had lost grout, caused water damage. Because they did not report these maintenance issues to me, are they liable for the damage, or is this something the maintenance crew should have regularly check on to be pro active? Thanks in advance.