Water always attempts to reach an optimal level determined by pressure and gravity. This represents a physical law in which plumbing is based. If you remember nothing else about the plumbing of science, this is one truth of which you should be aware. This principle, combined with understanding the specific effects of gravity and pressure on water, make up a large part of the science of plumbing. Knowing these facts can help you understand your home and may even help in a time of plumbing crisis, saving your home, bank account, and peace of mind.

Plumbing systems work in two ways; one is to take water in, and the other is to take water out. More succinctly, clean water in, dirty or waste water out. If that simple order or sequence gets mixed up, it's time to call a plumber to fix a monumental plumbing disaster.

How does clean water come into your home? That is explained by the natural law of pressure. Pressure allows clean water to pass through pipes, travel upwards to one or several floors, move left or right into this room or that, wherever it's needed. Those ubiquitous water valves control the way these pressurized water move in and around your home. Cold water is easily obtained from your main water supply through the process above. But if you need hot water, the cold water is first redirected to an installed water heater in your home that warms it up. The heated water then travels along the hot water line that again brings the water to all outlets in the home that requires hot water, like the dishwater, the bath tub or the shower.

If water intake is a simple science, so is water and waste outtake. But often, plumbing problems caused by waste outtake result to more costly repairs than the intake. You could try to fix it on your own, but it'll require dedication and determination. Overall, it's probably worth your while to seek the help of a certified master plumber.

Dirty waste water, after all, leaves your house following the law of gravity. Waste flows down to the sewer or septic tank in a gentle and easy manner. Behind this simple rule is the multitude of vents and traps to keep the process of waste removal possible. Vents allow air to fill drainpipes, precious air that allow waste water outflow. Traps are those curved S-shaped sections of the pipes under the sink drain. Traps perform a crucial role in forcing most of the water through the drainpipe, but leaving some to seal the area and prevent sewer gas from backing up.

Plumbing, as you see, is a science. Ignore the science behind it and your home will either be flooded, or you will encounter water damage of varied proportions. For any severe or major plumbing problems, the repair should be left to experience plumbers. Some areas have particular local plumbing codes that need to be checked on whether or not a homeowner is allowed to self-repair plumbing problems.

Over time, understanding the science behind plumbing can save you money and help to better know your own home.