fig6
![Dynamics of estrogenic activity in an urban river receiving wastewater effluents: effect-based measurements with CALUX](https://image.oaes.cc/d68c9c4d-5737-4767-841f-bbef28614e97/5745.fig.6.jpg)
Figure 6. Estrogenic Substance (ES) loads for the Zenne River in the Brussels Capital Region. Top panel: Load calculation with missing water sources. Bottom panel: Refined load calculation after assessment of missing water sources (see text). CSO: combined sewer overflow; WWTP: wastewater treatment plant.