If Louisville Water informed you through a letter that your private service line is lead, then our records indicate that at least a portion of your private service line is lead. We highly recommend replacing this line. Your private line begins at the property line connection and run to the water shutoff valve for your home. This line is the customer’s responsibility. Louisville Water does not have information for all private service lines. A licensed plumber can also check your line to see if it’s lead. If you would like us to test a water sample from your home, request a free water quality test kit online or call 502.569.0898.