Human Sewage Sludge
The facts: It's perfectly legal for nonorganic farmers to douse human sewage sludge taken from municipal water treatment plants to fertilize nonorganic fields. The sludge could contain whatever morgues, residences, and industrial parks decide to put down the drain. Scientists have detected shampoo chemicals in nonorganic tomatoes and hypothesize that sewage sludge is partly to blame.
The organic advantage: Organic certification bans the use of sewage sludge. Organic fertilizing methods rely more on regulated compost or cover crops—plants grown during the off season and tilled or crimped back onto the soil.
Read More: 15 Gross Food Facts
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