| Date | Town | Level | Pesticide |
| 24/06/2010 | Wunghnu | 2,4-dichlorophenoxyacetic acid | 0.8 μg/L |
| 9/09/2010 | Wunghnu | Atrazine | 1.2 μg/L |
| 9/09/2010 | Wunghnu | Simazine | 1 μg/L |
| 16/09/2010 | Wunghnu | Simazine | 0.8 μg/L |
| 16/09/2010 | Wunghnu | Atrazine | 0.8 μg/L |
| 24/02/2011 | Wunghnu | 2,4-dichlorophenoxyacetic acid | 0.8 μg/L |
| 7/03/2011 | Wunghnu | 2,4-dichlorophenoxyacetic acid | 0.7 μg/L |
| 7/03/2011 | Wunghnu WTP | 2,4-dichlorophenoxyacetic acid | 0.6 μg/L |
| 10/03/2011 | Wunghnu | 2,4-dichlorophenoxyacetic acid | 0.5 μg/L |
| 10/03/2011 | Wunghnu WTP | 2,4-dichlorophenoxyacetic acid | 0.5 μg/L |