Environmental and pollution condition of the Huizache-Caimanero Lagoon, in the north-west of Mexico

agricultural wastes agua bacteria coliforme coliform bacteria eau escorrentia fosfatos lagoons lagunas lagune mexico mexique nitrate nitrates nitratos nutrientes nutrients pesticide pesticides phosphate phosphates plaguicidas pollution public health residues residuos ruissellement runoff sediment sedimento substance nutritive water