| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | water contamination | Brazil | Water contamination is a significant issue, particularly in urban areas with inadequate sanitation systems, impacting public health and necessitating water treatment measures. | 1 |
| 2 | water quality | Brazil | Concerns about pollution and contamination of rivers and lakes | 1 |
| 3 | water quality standards | Brazil | Primarily focused on industrial and agricultural needs, with less emphasis on environmental impact | 1 |