[Content of nitrate in milk. Relationship with its concentration in the water supply for livestock].

Environmental pollution leads to increasing nitrate levels in dairy cattle's water supply. Possible repercussions regarding nitrate content in milk should therefore be considered. The results are presented of nitrate dosage in milk collected from cows provided with drinking water containing 0-180 mg/l nitrate. They show that drinking water has no significant effect on milk nitrate content which remains very low. It is concluded that this product does not constitute a health risk to consumers.