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effluents de STEP ou les pratiques agricoles)\n \nValeur COD (mg/L)\n\n< 2.00➜ Très bon état\n[2.00 - 4.00[ ➜ Bon état\n[4.00 - 6.00[ ➜ Etat moyen\n[6.00 - 8.00[ ➜ Etat médiocre\n≥ 8.00 ➜ Etat mauvais\n\n\nValeur de l'ammonium (mg/L)\n\n< 0.08➜ Très bon état\n[0.08 - 0.40 [ ➜ Bon état\n[0.40 - 0.60[ ➜ Etat moyen\n[0.60 - 0.80[ ➜ Etat médiocre\n≥ 0.80 ➜ Etat mauvais\n\n\nValeur du nitrite(mg/L)\n\n< 0.05➜ Très bon état\n[0.05 - 0.10 [ ➜ Bon état\n[0.10 - 0.15[ ➜ Etat moyen\n[0.15 - 0.20[ ➜ Etat médiocre\n≥ 0.20 ➜ Etat mauvais\n\n\nValeur du nitrate (mg/L)\n\n< 1.50➜ Très bon état\n[1.50- 5.60 [ ➜ Bon état\n[5.60 - 8.40[ ➜ Etat moyen\n[8.40 - 11.2[ ➜ Etat médiocre\n≥ 11.2 ➜ Etat mauvais\n\n\n\nValeur de l'orthophosate (mg/L)\n\n< 0.02➜ Très bon état\n[0.02 - 0.04 [ ➜ Bon état\n[0.04 - 0.06[ ➜ Etat moyen\n[0.06 - 0.08[ ➜ Etat médiocre\n≥ 0.08 ➜ Etat mauvais\n\nLa valeur -99 correspond à un élément Non analysé\nLa valeur -10 correspond à un élément Non détecté", "geometryType": 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