What method can be used to collect groundwater samples?

A bailer or peristaltic pump are widely recognized methods for collecting groundwater samples due to their effectiveness in retrieving water without contaminating the sample. A bailer is a simple device that allows for the collection of groundwater by dropping it into the well and then retrieving it—ensuring that the sample is representative of the water quality at that specific depth. It is particularly useful in environments where low disturbance is a priority.

The peristaltic pump, on the other hand, operates by compressing flexible tubing to create a vacuum that draws water into a collection container. This method is excellent for providing continuous and controlled sampling, which is vital when assessing the quality and quantity of groundwater over time.

These two methods are fundamentally designed to minimize contamination and ensure that the samples accurately reflect the groundwater's characteristics, making them suitable choices in environmental assessments and monitoring practices.