Mixquiahuala Journal: Fears That Lush Land May Lose a Foul Fertilizer
"For 100 years, Mexico City has flushed its wastewater north to irrigate the farmland of Hidalgo State. This foul cascade, which the farmers call 'the black waters,' flows through a latticework of canals and then trickles over the fields. So when word got out that the government was finally going to build a giant wastewater treatment plant, one might have expected the farmers around here to be excited. Instead, they were suspicious."