| Item | Unit | Limit | Langwoqu Mine | Shenyuan Mine | ||
| Test value | Result | Test value | Result | |||
| Chroma | degree | 15 | 5.0 | Normal | 5.0 | Normal |
| Turbidity | degree | 3 | >200.0 | Above standard | 180.0 | Above standard |
| Taste |
| No peculiar smell | Coal tar odour | Above standard | Coal tar odour | Above standard |
| Material visible to the naked eye |
| No | Containing coal ash | Above standard | Containing coal ash | Above standard |