| Statistics of sewage discharge monitoring data in May 2019 | |||
| Monitoring date | Cod | Ammonia nitrogen | Whether it meets the standard |
| Monitoring results（mg/L） | Monitoring results（mg/L） | ||
| Standard limit：500 | Standard limit：45 | ||
| May 5 | 73 | 5 | Yes |
| May 6 | 70 | 11 | Yes |
| May 7 | 66 | 7 | Yes |
| May 8 | 76 | 9 | Yes |
| May 9 | 71 | 7 | Yes |
| May 10 | 77 | 11 | Yes |
| May 13 | 69 | 6 | Yes |
| May 14 | 75 | 9 | Yes |
| May 15 | 70 | 8 | Yes |
| May 16 | 76 | 6 | Yes |
| May 17 | 68 | 9 | Yes |
| May 18 | 67 | 5 | Yes |
| May 19 | 71 | 10 | Yes |
| May 20 | 66 | 8 | Yes |
| May 21 | 63 | 9 | Yes |
| May 22 | 80 | 8 | Yes |
| May 27 | 75 | 6 | Yes |
| May 28 | 68 | 10 | Yes |
| May 29 | 76 | 5 | Yes |
| May 30 | 75 | 7 | Yes |
| May 31 | 84 | 6 | Yes |