What is the purpose of placing a brick in a toilet tank?

Placing a brick in a toilet tank serves the purpose of displacing water, particularly in older toilets that use a significant amount of water per flush. By adding a brick, you effectively reduce the overall volume of water in the tank, leading to less water being used with each flush. This method is often employed as a water conservation strategy, allowing for fewer gallons per flush without compromising functionality. This is particularly important in regions experiencing water shortages or where water conservation measures are encouraged.

Improving the flushing mechanism, increasing the water flow rate, and preventing clogs are not associated with the placement of a brick in the tank. These activities involve different plumbing mechanisms and modifications that do not align with the simple strategy of water displacement that a brick provides.