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...Urban agriculture food jobs and sustainable cities edition chapter problems related to by jac smit joe nasr annu ratta published the network inc a non profit c organization with financial support permission of united nations development programme undp notice this document is available for downloading copying distribution transmission any use must be attributed from photos figures have been left out at time but they may added in future commonly perceived some as an activity that marginal temporary archaic except within asia regard it actually harmful farmers consumers environment land economy appearance city most concerns about are potential rather than inherent table if not practiced properly can indeed both unsanitary polluting cite one well known example vegetable irrigation untreated wastewater chilean peri farms resulted few cases cholera because vegetables were cooked fig case same problem was more pronounced peru now countries instituted water management regimes prevented recurre...