It is important for the tank to have the proper amount of water.  Making adjustments is an easy task. The water line is marked in one of two places. KOHLER toilets have a water level indicator located on the overflow tube or tank wall.  The adjustment on the fill valve would ensure there is the correct amount of water in a toilet tank.  Follow the steps in the links below to adjust the water level height in your tank. Fill Valve Style One Fill Valve Style Two Help TopicsAccessoriesBathingFurniture/Cabinets/MirrorsDTV/SteamFaucets/ValvesMisc/Policies/ProceduresShower DoorsSinks VideosIETMs (Interactive Electronic Technical Manuals)Topic #: 5641-1937Date Created: 02/09/2012Last Modified Since: 04/05/2013Viewed: 46815To raise the water level in the toilet bowl, you may have to reach into it. When all is well, the water level in a toilet bowl is determined by the height of the outlet of its internal P-trap. When the water level in the bowl is too high, it's usually because the pipes are clogged, but when it's too low, there are at least four possible reasons.

The first is a partial clog that slowly is siphoning water from the bowl. Another is insufficient water in the tank, and a third is blocked vent pipes. These problems are fixable, but if water is leaking from a hairline crack, it's time for a new toilet. Remove the tank cover and check the water level after the fill valve has shut off. It should be about one inch below the opening of the overflow tube. If it is significantly lower than that, there may not be enough water in the tank to fill the bowl after a flush. Correct this by adjusting the float. Screw the ball on the end of a float arm clockwise to shorten the arm. It will exert less pressure on the valve, which will take longer to close. If you have a cup-style float that fits around the overflow tube, shorten the adjustment strap so the float has to rise higher to shut off the valve. Test the internal piping system of the toilet, called the colon, for a partial blockage that may be siphoning water from the bowl. Fill a 5-gallon bucket with water and pour it quickly into the bowl while the water is stationary.

If it backs up, the colon probably is blocked. Put on a pair of rubber gloves that cover your forearms and reach into the colon. This is the most effective way to remove a large piece of debris, such as a disposable diaper or a tampon. If you can't find anything, plunge the toilet. If all else fails, clear the obstruction with a toilet auger. Listen for gurgling sounds from the toilet when you use another toilet or empty the bathtub. They are an indication that the plumbing vents are blocked, and the vacuum in the pipes is sucking air through the toilet and probably emptying the bowl. Clear the vents by climbing on the roof and spraying water into them with a garden hose. Make sure you are well anchored to the roof. Look for water on the floor around the base of the toilet if you can't pinpoint any other reason for the low water level. You may have to remove the toilet to get a good look at the subfloor, especially if the floor is tiled. The presence of water probably means there is a crack in the bowl.

If so, replace the toilet, because you can't repair cracks in porcelain reliably. Things You Will Need Bucket, 5-gallon Rubber gloves Plunger Toilet auger Garden hose Tip Warning Photo Credits Digital Vision./Digital Vision/Getty Images Suggest a CorrectionBest Price Tyres ChristchurchWhy Does The Water Level In My Toilet Bowl Seem Low?Bike Tire Patch Kit Autozone If you feel the water level in your bowl is low, make sure the rim feed hose is connected to the flush valve.Elf Indoor/Outdoor Laser Light If this is not connected, your bowl water level will be low. 1.If you have a canister flush valve and your hose installed like this: 2. Your Hose should be attached like this: 1. If you have a flapper flush valve and your hose is installed like this:

2. Your hose should be installed like this: Help TopicsAccessoriesBathingFurniture/Cabinets/MirrorsDTV/SteamFaucets/ValvesMisc/Policies/ProceduresShower DoorsSinks VideosIETMs (Interactive Electronic Technical Manuals)Topic #: 5641-892Date Created: 05/24/2010Last Modified Since: 04/05/2013Viewed: 20363 TOILET SYMPTOM:Water Level Close To Top Of Toilet Overflow Pipe SolutionLower the water level setting of fill valve. Adjusting the Water Level Fluidmaster has two types of fill valves: the newest valve has a plastic adjustment rod and the older style has a stainless steel rod and clip. The new plastic adjustment is a screw type as shown in fig. A. The older style stainless steel is in fig. B Plastic screw adjustment rod Using your fingers or a screw driver, turn the head of the screw in the clockwise direction to raise the float cup which raises the water level setting. To lower the setting you must first flush the tank. While the tank is flushing begin turning the screw adjustment rod counter clockwise several times.

The valve is shut off at the new setting. Stainless steel adjustment rod You will find the water level adjustment clip located on the front of the black float cup. Squeeze and hold the outside edges of the clip and push the clip and float cup lower on the stainless steel link to lower the water level setting. Raise the clip and float higher on the link if you want to raise the water level in the tank. Release the clip after you move to a new location on the stainless steel rod. Note: The stainless steel link has a crimp or flattened out spot above the water level adjustment clip, and one at the end of the link. If the water level adjustment clip is already at the crimp on the stainless steel link you cannot raise the water level setting any higher unless you raise the height of the fill valve. See (adjusting height of fill valve). Top View Of New Fill Valve Side View Of Standard Fill Valve Recently purchased a home and one of the toilet bowls has very little water in it, so when you do #2 it always hits the bowl and makes a mess...

How can you control/set the amount of water the bowl contains so I can raise/increase it a little bit? If the level in the tank is also extremely low it could be that the fill valve is adjusted way too low, thus not allowing enough water into the bowl from the refill tube. The level in the bowl has nothing to do with the plumbing, it has to do with the design of the bowl. The track of the drain has an up "trap" and then down to the drain, so the water will only raise as high as the up trap then spill over into the drain. Here is a visual: There is usually a small, flexible tube clipped to the overflow tube that adds water to the bowl while the tank is filling (marked as refill tube on Speedy Petey's diagram). If this comes loose or gets pinched, the water level in the bowl well be too low. The water level in the bowl is down to the plumbing - specifically, the height before the drop into the foul drain. Generally, this isn't something that can be adjusted, but something inherent in the design of the bowl, in some cases to intentionally reduce the amount of water required to flush.