| Chemical pollutants | Factory water | Peripheral water | The standard limit (μg/L) | ||||
| Number of samples (copies) | Median (μg/L) | Range (μg/L) | Number of samples (copies) | Median (μg/L) | Range (μg/L) | ||
| Iron (Fe) | 150 | 19.44 | 2.25 - 228.10 | 207 | 49.34 | 0.04 - 240.00 | 300 |
| Manganese (Mn) | 150 | 13.05 | 0.25 - 108.00 | 207 | 10.96 | 0.03 - 141.00 | 100 |
| Volatile phenol, VP | 150 | 1.05 | 1.00 - 2.00 | 162 | 1.06 | 1.00 - 2.00 | 2 |
| Cyanide (CN−) | 150 | 1.50 | 1.00 - 10.00 | 184 | 1.50 | 0.10 - 2.00 | 50 |
| Fluoride (F−) | 150 | 236.17 | 50.00 - 430.00 | 204 | 275.84 | 50.00 - 870.00 | 1000 |
| Lead (Pb) | 150 | 2.22 | 0.10 - 5.00 | 204 | 2.00 | 0.03 - 7.00 | 10 |
| Mercury (Hg) | 150 | 0.087 | 0.025 - 1.000 | 204 | 0.072 | 0.025 - 1.000 | 1 |
| Ammonia nitrogen ( ) | 2 | 10.00 | 10.00 - 10.00 | 0 | 0 | 0 - 0 | 500 |
| Nitrate ( ) | 150 | 1564 | 20 - 3250 | 204 | 1777 | 5 - 13950 | 10,000 |
| Copper (Cu) | 150 | 3.18 | 0.50 - 14.00 | 204 | 4.04 | 0.05 - 100.00 | 1000 |
| Zinc (Zn) | 150 | 15.79 | 0.40 - 96.00 | 203 | 29.95 | 0.40 - 380.00 | 1000 |
| Selenium (Se) | 150 | 2.08 | 0.50 - 5.00 | 204 | 1.53 | 0.09 - 5.00 | 10 |
| Arsenic (As) | 150 | 2.09 | 0.50 - 5.00 | 204 | 1.62 | 0.04 - 5.00 | 10 |
| Chromium (Cr6+) | 150 | 3.10 | 2.00 - 5.00 | 184 | 3.30 | 2.00 - 6.00 | 50 |
| Cadmium (Cd) | 150 | 1.10 | 0.01 - 2.00 | 204 | 0.72 | 0.03 - 5.00 | 5 |