Even at this fast rate, groundwater and substances dissolved in it might take several years to move only one mile. Because the movement of groundwater is slow and difficult to predict, substances that enter the groundwater in one location can unexpectedly turn up years later in different locations. However, groundwater flow in limestone solution channels can be extremely rapid as can the flow in crystalline rock fractures. Both of these types of flow occur in Georgia. Pesticide contaminated drinking water usually has no detectable odor or taste.
Tests done by a certified water laboratory are the only reliable method to detect their presence.
The lab will supply the container and instructions for taking the sample. Follow the instructions precisely and supply all information on the forms as well as additional information on why you suspect pesticide contamination. This should include past and current agriculture land use, past and current industry in the area, and household and lawn pesticide application and any pesticide spillage or potential backflow occurrences. Pesticide testing is expensive. Based on the above information, the laboratory conducts a scan to look for a group of related pesticides to determine if further testing is needed.