Installed in your plumbing drains is a P-Trap. These are used to eliminate a vacuum effect on your drains and to keep everything that has gone down the sink in its proper place. P Traps can get bumped or become loose. It’s wise to keep an eye on these and check them periodically. Don’t overload the space under your sinks so you can keep watch on them and not accidentally bump them, causing a leak. If you do find them leaking, you can simply reach underneath and hand tighten the plastic fitting. If it’s within your warranty period, feel free to let us know, and we are happy to help.