Could they have said "WELL" test? We sometimes talk Southern here in Abbeville county SC.
For USDA the following property requirements must be completed, if applicable.
If property is served by an individual water supply system, the local health authority or state certified laboratory must perform a water quality analysis. The water quality must meet state and local standards.
The time required depends on your provider more than anything else. If you have the cash they can do it faster,