Crawlspaces are often neglected and forgotten about till a home is for sale. Yearly evaluation of your crawlspace should be performed. Plumbing leaks like this can lead to other issue such as termites, anobiid beetle and rodents.
If you cannot or unwilling to do this hiring a home inspector and structural pest inspector can be well worth the money to do an annual inspection to look for issues such as plumbing leaks and insect issues.