Because your stupid! Call a plumber!
When you flush your toilet, cold water is used, this diverts cold water from the sinks and showers, resulting in diminished cold water flow momentarily at the sinks and showers, so, less cold mixed with hot, = hotter sinks and showers.
Sewage
Water is used in sinks, showers, baths, hoses, sprinklers, fountains, toilets, etc.
gray water
The soapy water that comes from onboard sinks, showers, and boat washing is typically referred to as "gray water." Gray water includes wastewater from non-toilet sources and is distinct from black water, which contains sewage. Proper management and disposal of gray water are important to prevent pollution and adhere to environmental regulations.
A water temperature regulator in a plumbing system controls and maintains the temperature of the water flowing through the pipes, ensuring that it stays at a safe and comfortable level for use in showers, sinks, and other fixtures.
The soapy water that comes from onboard sinks, showers, and boat washing is commonly referred to as "graywater." This wastewater is distinct from blackwater, which contains sewage. Graywater can include soap, food particles, and other organic matter, and its management is important for environmental protection and compliance with regulations in marine settings.
The hot and cold water valves in a plumbing system control the flow of hot and cold water to different fixtures, such as sinks, showers, and appliances. They regulate the temperature and pressure of the water coming out of the taps, allowing users to adjust the water to their desired temperature for various purposes like washing dishes or taking a shower.
Sinks have an S-shaped bend, called a P-trap, to prevent foul odors and sewer gases from coming back up through the drain and into the room. The water in the trap creates a barrier that blocks the odors from the sewage system.
A stone sinks in water because it is more dense than water.
Tempered water is used for providing a safe and consistent water temperature in various applications such as showers, sinks, and dishwashers. It helps prevent scalding injuries by blending hot and cold water to reach a desired temperature range.
The main water pipe in a plumbing system is responsible for bringing clean water into a building from the municipal water supply or a well. It distributes water to various fixtures like sinks, showers, and toilets for everyday use.