*Promising Techniques for Wastewater Treatment and Water Quality Assessment*

**First enrichment Tube B (before) Tube C (after 3 weeks)**

**Second enrichment Tube C (after 2 weeks)**

**Third enrichments Tube D and Tube E (after 2 weeks)**

**Table 6.** *Observation on first, second and third enrichment.*

**Figure 4.** *Streaking results of second enrichment and third enrichment of lake water samples.*

The **Figure 4** below shows bacteria growth observed on MSM double layer agar after streaking with second and third enrichment cultures. Both plates are able to form clear or hollow zone proving degradation of substrate carbazole.
