| DOMESTIC TREATMENT OUTLET DISCHARGED VALUES | |||||
| Analysis | Limits | Unit | Average Value in 2021 | Average Value in 2022 | Average Value in 2023 |
| Suspended Solids (SS) | 70 | mg/L | 34,6 | 21,4 | 11,3 |
| Biological Oxygen Demand (BOD) | 50 | mg/L | 14,7 | 17,9 | 16,1 |
| Chemical Oxygen Demand (COD) | 180 | mg/L | 58,1 | 46,6 | 38,9 |
| pH | 6-9 | – | 7,7 | 7,8 | 7,3 |
| MUNICIPAL WATER SEDIMENTATION POND DISCHARGED VALUES | |||||
| Analysis | Limits | Unit | Average Value in 2021 | Average Value in 2022 | Average Value in 2023 |
| Suspended Solids (SS) | 100 | mg/L | 7,5 | 6,9 | 7,5 |
| ZSF (Fish Bioassay) | 20 | mg/L | <1 | <1 | <10 |
| Chemical Oxygen Demand (COD) | 200 | mg/L | 24 | 19,4 | 15,5 |
| Chromium (VI) | 0.3 | mg/L | 0,1 | 0 | <0,02 |
| pH | 6-9 | – | 7,6 | 7,7 | 7,6 |
| Colour | 280 | Pt-Co | 15 | 16,6 | 18,1 |
| Oil and Grease | 10 | mg/L | <10 | <10 | <10 |
