Wall Saying Vinyl

When i bought this house 18mons ago, it was 4 yrs old. 3 months ago i noticed small water puddle in me laundry room coming from beneath the floor between the vinyl & ceramic floor joint. Plumber came broke the wall fixed a faulty joint in plumbing which was causing slab/pinhole leak. Since the leak was small and going on for some time, i now notice the adjacent hardwood floor a little bit affected by it (few mm gaps btw wood). I also recently noticed small ants in the same area i think they have found a tunnel under the wood to come and go. Pest control said its small ants that dont harm the wood and they sprayed so it will go away soon. I am concerned whatelse can happen e.g mold. Also can there be more leaks that i dont know of or was it just one that caused the minor wood floor damage. How large area of an area can be affected by just one slab leak? What are the precautionary measures i should take now to prevent further costly repairs, mold termites. We are on a budget. Thank you.