Meaning and Usage
"地下水" (ちかすい) refers to water located beneath the earth's surface. It is commonly used in environmental, geological, and everyday contexts, especially when discussing water sources or pollution.
Common Contexts
This word often appears in discussions about drinking water sources, environmental protection, and natural resource management. For example, many rural areas rely on underground water for daily use.
Collocations and Patterns
- 地下水を利用する: to use underground water (common when talking about water supply)
- 地下水の汚染: contamination of underground water (used in environmental contexts)
- 地下水位: underground water level (important in geology and agriculture)
Register and Nuance
"地下水" is a neutral, formal term suitable for scientific, environmental, and official contexts. It is not casual slang and is appropriate in both spoken and written Japanese.
Common Mistakes
Learners sometimes confuse "地下水" with "水道水" (tap water) or "表流水" (surface water). Remember that "地下水" specifically means water underground, not water supplied through pipes or found on the surface.