Which of the following is included in a sanitary survey of groundwater supplies?

In a sanitary survey of groundwater supplies, it is essential to consider multiple factors that can impact water quality and safety. The correct answer encompasses a comprehensive assessment that includes various elements such as land use and habitation, which can indicate potential sources of contamination. Additionally, assessing sources of pollution helps identify any risks that might affect groundwater quality.

Local geology plays a crucial role in understanding how groundwater moves and is filtered through soil and rock strata, while characteristics of the soil and rock, including their nature and arrangement, are vital for evaluating their capacity to filter pollutants and protect the aquifer. Furthermore, the aquifer drainage area is included to ensure that the sources supplying the groundwater are accounted for in the survey.

By including all these aspects—land use, habitation, sources of pollution, aquifer drainage area, nature of soil, and geology—the survey provides a holistic view of the factors influencing groundwater safety and sustainability. This thorough approach is essential for effective management and protection of groundwater resources.