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According to a new report, 200 million farmers use human shit as fertilizer for 49 million acres of land. The study, published by the International Water Management Institute (IWMI), details how ten percent of the population, mostly in developing nations, eat grains and vegetables harvested from fields irrigated and fertilized with raw sewage. Traditional fertilizer and clean water is too expensive or simply unavailable in many places. From National Geographic:
The report focused on poor urban areas, where farms in or near cities supply relatively inexpensive food. Most of these operations draw irrigation water from local rivers or lakes. Unlike developed cities, however, these areas lack advanced water-treatment facilities, and rivers effectively become sewers.
When this water is used for agricultural irrigation, farmers risk absorbing disease-causing bacteria, as do consumers who eat the produce raw and unwashed. Nearly 2.2 million [...]