Make Tenants Pay Water Leak Bill?

[Sixto Moralez]

Hi BP Family,

I have good tenants in a home that for some reason didn't notify me of a potential water leak until a week after it had been leaking.  The tenant called and said no hot water for early morning shower, so I inspected with plumber same day.
Home is a pier and beam and has 3+ inches of water underneath.  This was the hot water line; therefore, the flooring is warped throughout the home.  
Question:  Is it reasonable to ask the tenants to pay for the plumbing leak since they didn't notify me within 24 hours of the leak?  The lease agreement states tenants negligence.  Any advice is appreciated. 

Thanks.