From agriculture. The wastewater from the agricultural activity, cultivation and animal husbandry by waste water from agriculture, such as the use of fertilizer nitrate of farmers be nitrogen. Phosphorus, potassium, and various toxins. High volumes.Nitrate Nitrite and will change together with the hemoglobin can cause dangerous lethal, also at present. Farmers also used pesticides more residual substances in plants, and according to the soil surface.The treatment of the animals such as food waste and waste water from payment of livestock. Will find the dirt in the form of organic matter most when dumped into the river, canal, it will cause a plague.
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