Groundwater within crystalline rocks often exhibits distinct characteristics. It tends to have low mineral content, making it relatively soft and less prone to contamination. Migration through fractures and fissures in these rocks can lead to rapid flow with less filtration, potentially affecting water quality. Monitoring is crucial for safe water supply.

Crystalline rock has a direct impact on groundwater quality. It can reduce the quality of underground water. On the other hand, it provides less than sedimentary rocks.