Label requirement on groundwater monitoring wells includes

• A. A label that reads 'groundwater monitoring well not suitable for drinking water'
• B. A label with the owner's name
• C. No label required
• D. A warranty label

Answer: (A)

Labeling groundwater monitoring wells with a notice that they are not suitable for drinking water communicates their specific purpose and safety status. This helps prevent accidental use as a potable source, guides proper handling and sampling, and supports regulatory compliance by clearly distinguishing monitoring wells from drinking-water wells. While another label like an owner's name can be useful for asset management, it does not address safety or regulatory requirements. Saying no label is required would create risk of misuse, and a warranty label has no relevance to the monitoring purpose.