Yes, the vast majority of under-sink leaks can be easily fixed yourself as a DIY project using only basic hand tools like an adjustable wrench, pliers, and screwdrivers. Common repairs—such as tightening slip-joint nuts, replacing worn rubber washers on a P-trap, or re-sealing a sink strainer basket with plumber's putty—require no specialized plumbing license and can be completed in less than an hour, saving you costly service call fees. Verification: Turn the water back on after your repair and check under the sink to ensure absolute dryness.
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