Global water shortages do not affect only the environment only when you use more water. Some water is lost by useless can not be reused again as the only minority that will bring back to nature.
Water shortages not only affect the environment when using more water. Some water will be destroyed by its inability reused again. Is only a small part to the secret nature.
Water shortage status not only environmental impact only when using more water. Some water is in vain not brought back to work again. Only a few, only to be brought back to nature.