If you want to fix a leaking drainage pipe without actually replacing it, the first step is to shut off the water supply. Then dry the pipe as thoroughly as possible and find the source of the leak. Depending on what you find (and some leaks can be more dramatic than others) you might use any of several methods to effect a repair.Epoxy putty is one possibility: Clean the surface around the leak, making sure to remove all dirt and grease. Knead the putty until it's nice and soft, then mold it over the leak, with a good portion of it extending well out over the area that was leaking (and might still be leaking, under certain conditions). Follow the manufacturer's instructions for how long you should wait for the stuff to harden before you turn the water back on.2. Repair Tape for Pipes: The tape must be wrapped tightly around the leak while overlapping the tape as you go. It must also extend beyond the source of the leak. This is a fast method, and while it doesn’t look pretty (and may not even be allowed under some local building codes), it works for small leaks and, presumably, for as long as tape can stick to a wet surface. 3. Hose Clamps and Rubber: If you have a piece of rubber handy, such as an old inner tube to an automobile tire, you can cut it to size, place it over the leak, and secure it with hose clamps on either end of the rubber piece to make a seal.4. Pipe Clamp: For leaks that are a bit larger, you can use pipe clamps. These are like oversized Band-Aids—that stick and work better if the pipe is cleaned before applying—that you can wrap around a pipe in order to keep the water from spilling out.5. Silicone Tape: Unlike the pipe clamp, which can only work on a leak that is still mostly under control, in a situation where the water is just starting to escape from the pipe, you can use this self-fusing tape on leaks that are under more pressure—where the water is trying to get out, but you want it to stay in.