| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | water contamination | Mexico | 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 | Mexico | Concerns about pollution and contamination of rivers and lakes | 1 |
| 3 | water quality standards | Mexico | Focus on preserving traditional methods of water purification for cultural and historical reasons | 1 |