You can't use steel to make a hot water tank because steel can rust.
That will depend on the capacity of the tank and the gauge of the steel used to make it.
Many steel tanks are used for potable water systems if protected properly
stainless steel
They were made from steel and other spare parts that they could find.
If you are talking water heater, they are made of steel. If talking storage tanks, copper lasts much longer than steel. Will not rust.
what mineral can be used in drinking water and toothpaste and steel
Steel tanks are used for fuel containment in large amounts. Most liquids stored in steel tanks are hazardous, combustible and flammable liquids. Steel tanks are often used by chemical facilities, bulk petroleum plants, government agencies, and farming operations.
A rain water tank is water tank used to collect and store rain water run off, typically from rooftops via rain gutters. These water tanks are typically used to make use of rain water for later use, reduce mains water usage for economic and environmental reasons.
A water tank can be used for the storage or transportation of water. A hot water tank is used to heat water and keep it at a set temperature until it is needed. Water tanks can also be used to provide an emergency water supply to areas that have had storms or natural disasters.
A ferro cement water tank is a type of storage structure made from a composite material of cement and reinforced steel mesh. This construction technique allows for a strong, lightweight, and durable tank that can withstand various environmental conditions. Ferro cement tanks are often used for storing drinking water, irrigation, or other liquids, offering an economical solution for water storage in rural and urban settings. Their thin-walled design and versatility make them a popular choice in sustainable water management projects.
Steel, an alloy of iron, carbon and some other metals, is the primary metal used to construct a battle tank. There will be a number of other metals (and alloys) used to make different parts around and inside this armored vehicle, and they include aluminum, brass, copper, titanium, uranium (the depleted type, or DU) and others.
It is important to choose a water tank that is designed for the purpose to avoid the leeching of chemicals into the water. Consider a steel container or a plastic container maked with the code HDPE, LDPE or PP.