| F | 1500 | -Developmental defects of bone and teeth | -Dental and skeletal flourosis | -Natural deposits |
| NO3 | 45,000 |
| -Metamoglobulinemia | -Animal waste, fertilizer and natural deposit |
| Cd | 10 | -Growth reduction | -Kidney effects -Cancer of prostate | -Natural deposit -Galvanized pipe corrosion |