The phrase "problem of waste" is correct and can be used in written English.
You can use it to discuss any kind of waste, such as garbage, energy, resources, etc. For example: Governments around the world are trying to find solutions to the growing problem of waste.
That is what it really costs to solve the problem of waste.
Similarly, Dutch carpet manufacturer and "cradle-to-cradle" protagonist Desso stresses the "urgent need" to tackle the problem of waste.
Our population, and especially our children, the next generation, needs educating about the present problem of waste.
Some in the food industry say that the local food movement has highlighted the problem of waste and galvanized efforts to combat it.
A problem of waste disposal arises only when people get rich enough to buy manufactured goods that they cannot or will not recycle personally.
Its newest campaign acknowledges that it is part of a problem of waste in discarded drink containers and, to counter that, encourages more recycling.
More difficult is the problem of wasted food.
Despite its airlessness, "In Certain Circles" nevertheless moves outward, linking feminist questions with the more general problem of wasted human potential.
This study addresses the problem of wasted transportation capacity in Personal Rapid Transit (PRT) systems.
The problem of wasting time chatting in dating apps has now become so prevalent that many users' profiles today explicitly state that they're "not looking for pen pals".
The applications given by Citrus wastes may help the industrial processors to find new ways of increasing the profit by recycling bioactive compounds and also reducing the considerable problem of wastes.
