Why is my Frigidaire refrigerator leaking water from the bottom?

Finding standing water pooled underneath the bottom of a Frigidaire residential refrigerator is a frequent plumbing and drainage issue typically caused by a blocked defrost drain line or a compromised water supply connection. The primary culprit is a frozen or debris-choked defrost drain tube located behind the freezer back panel; when melting auto-defrost water cannot flow down into the bottom evaporation pan, it overflows inside the cabinet and leaks out onto your kitchen floor. Other common causes include a cracked plastic evaporation pan sitting near the compressor, a loose water supply line connection for refrigerators equipped with ice makers, or a misaligned water filter housing. You can troubleshoot by inspecting where the water originates. You can verify that your corrective action is successful when clearing drain clogs or tightening water lines keeps the floor completely dry.