Tenant test positive for lead paint on bath tub

[Marci Stein]

Not sure how to proceed —

2 adult tenants. No children .
newly moved in and tested for lead on peeling paint on side of painted bathtub. Positive. 

From what I’ve read, I am required to remediate this if a child under 6, 

is living in the house - however, this is not the case .
anyone please advise how to proceed.
Am I responsible if an adult finds lead in paint? I’m in upstate NY ..  TY!