Which method is not considered a water conservation method?

The reason "overwatering plants" is identified as not a water conservation method lies in the fundamental principle of conservation itself. Water conservation methods are designed to use water more efficiently or to reduce water waste.

Installing low flush toilets is a prime example of water conservation as these toilets significantly reduce the amount of water used with each flush, compared to standard toilets. Checking and repairing leaks is also a critical conservation practice because it prevents substantial amounts of water from being wasted through unnoticed leaks. Auto controls for irrigation help regulate the amount of water used for landscaping, ensuring that plants receive the right amount of water without excess, thereby avoiding waste.

In contrast, overwatering plants goes against the goal of conservation. It involves applying more water than the plants need, which not only leads to wasted resources but can also harm the plants and contribute to issues such as runoff and increased water pollution. Thus, overwatering cannot be classified as a conservation method.