New Tenants & We Already Have a Water Issue

[Cassandra Sifford]

So today me and my maintenance guy come over to cut the grass and change out the thermostat and to our surprise there's all this water on the new vinyl plank flooring in the dining room. The eldest daughter, 14yo, stated that the youngest had spilled some water. I notified the tenant of the incident as she was at work. I later get a call from her saying that it was alot of water coming from the laundry/HVAC room going into the kitchen and into the dining. We go back out there to assess the situation and there's way more water coming from the seams as we stepped across the floor in those rooms. My maintenance guy noticed the w/d hookup and tightened the connections. We're now under the impression that one of her children may have caused the issue. I'm concerned about the water sitting under the floor. Should the floor be removed to allow the concrete to dry and reinstall the planks? If so, at who's expense??? Mind u I've been there 2x in the past month to cut the grass and a gentlemen has been there that isn't on the lease. Idk if its coincidence or she's got him living there unapproved. I'm so bothered on the last day of my holiday weekend ...

Any opinions are greatly appreciated!