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What is groundwater quality testing? Environmental standards and monitoring research [Basic Knowledge]

Is the measurement the same as that for drinking water? We will summarize the 28 environmental standards for groundwater, the monitoring surveys conducted by the national and local governments, and the key points to consider in factories and businesses.

The purpose of investigating groundwater can be broadly divided into two categories: testing whether well water can be used as drinking water, and examining whether the groundwater itself is contaminated from an environmental perspective. The former is assessed based on water quality standards for tap water, while the latter is judged according to environmental standards for groundwater. The drinking water tests will be covered in a separate article, and this article will focus on the latter. ■ What are the environmental standards for groundwater? Based on the Basic Environmental Law, the government has established desirable standards for protecting human health through official notifications. There are 28 criteria values set for all groundwater. Measurements are conducted at locations that accurately capture the contamination situation, taking into account factors such as groundwater flow. ■ Main contents of the 28 items 1. Metals, etc.: Cadmium, lead, hexavalent chromium, arsenic, total mercury, etc. 2. Volatile organic compounds: Trichloroethylene, tetrachloroethylene, benzene, etc. 3. Others: Nitrate nitrogen and nitrite nitrogen, fluoride, boron, 1,4-dioxane, thiuram, etc. Please feel free to consult us first.