[Baz]

When in doubt better to be pro-active and replace. 15 years is a good run.....you got your money's worth.

Water can do some incredible damage. Especially if the breach happens when no one is home.

My folks were on a trip once and one of the toilet supply lines gave way. One of the neighbors noticed water coming out from under the front door. Oops. Fortunately there was a very visible isolation valve.

Insurance covered the damage and the repair work was managed by Servpro but a lot of irreplaceable stuff was damaged like some photo albums, etc.

Check those toilet supply lines!