Flushing. When you don’t have a constant leak, it is mostly when you would flush it. Flushing the tank may cause leak due to a problem somewhere in the tank to the bowl gasket. You must confirm that the bowl and the tank are connected at the ridge. The ridge should have both the bowl and the tank in touch. The ridge will have wing nuts. My attempt to repair the grey water holding in my camper. Successful. A very difficult product to work with though. My attempt to repair the grey water holding in my camper. Successful. Step 3: Disconnect the Supply Line From the Toilet Tank. Using an adjustable wrench or pliers, disconnect the supply line from the toilet tank by turning the nut counterclockwise until it comes loose. Be sure to have a bucket or towel handy to catch any remaining water that may come out. A leaking tank can lead to a number of issues down the track, including: Enlarged Splits – Leakage in a poly tank can lead to larger splitting of the tank if left unattended for long periods of time. Wet Areas – Leakage can cause long term wet areas around the base of your water tank and cause subsiding of your rain water tank. This can Re: Fix water leak from Rainwater tank. August 2020. Hi @bm, If you are certain that the water is coming from inside the black fitting then that indicates the gate valve is faulty and allowing water to bypass it. A couple of options, the first is just to replace the gate valve or if the tank is full you might find it more convenient to just In this video I will show you one way to fix a stock tank using a propane torch and flat head screwdriver. Please take the utmost care when doing this and m 3. Damaged Pipes Between Tank and Drainage Field. There are a number of reasons that sewers drip, but one of the reasons is damage to the pipes between the tank and the drainage field. Over time, these pipes can become cracked or blocked, causing waste water to back up into the tank. Step 2: Turn off the cold water valve. Your water heater gets its water from the cold water supply. It should have a shut-off valve at the cold inlet. Turn the lever to the off position. If your tank has a wheel on it, turn it clockwise until the water shuts off. At this point, you do not need to drain the tank. Step 4 alternative: replace the entire leaky water tank valve assembly. It is also possible to replace the entire Schrader Valve assembly. If your old valve is badly damaged or leaks at its base where the valve screws into the water piping, or if you can't just screw in a new valve core this is what you'll need to do. Fix a leaking City Water Inlet Connection Backflow check valve on your RV or travel trailer. I show you how to re-seat the o-ring that can come dislodged du JSIIk.