Hydrogeology expert from the Bandung Institute of Technology (ITB) Prof. Lambok M. Hutasoit explained the reasons why mountain water is often chosen as a water source by the Bottled Drinking Water (AMDK) industry compared to water from ordinary groundwater.
"Rocks containing water can be found at both shallow and deep depths, but shallower ones are usually more susceptible to contamination, whether from toilets, sewers, or other waste," said Prof. Lambok in Jakarta on Monday.
Lambok said the main reason is that not all groundwater is safe for consumption. While groundwater often contains minerals, not all of them are beneficial, such as the highly toxic chromium VI content.
Therefore, water used for bottled drinking water must first be analyzed for all chemical substances. Furthermore, water quality is also highly dependent on the rock layers.
Of the various rock types, sandstone, limestone, and limestone are considered good sources of water. Mudstone, on the other hand, is considered less desirable due to its susceptibility to contamination.
