Alabama Water Well Regulations and Permitting (ADEM)
Core concepts
Alabama regulates water wells through the Alabama Department of Environmental Management (ADEM) under the Water Well Standards and the state's well driller licensing program. A candidate must understand the driller licensing requirement, the well permit/notification process, and the standards for construction, grouting, and abandonment. Know that wells must be constructed to prevent contamination, that the annular space must be sealed, and that abandoned wells must be properly plugged. Understand recordkeeping and reporting: well logs, construction details, and water quality data must be submitted as required. Know the role of the local health department and ADEM in permitting and inspection.
Traps
Questions often misstate which agency issues which approval - ADEM is the state environmental agency, while local health departments handle certain permits. Another trap is assuming a permit is always required for every well; some exempt uses exist (e.g., certain agricultural or monitoring wells) - verify rather than assume. Watch for confusion between driller licensing and well permitting, and between construction standards and abandonment standards. Do not assume federal rules replace state rules; Alabama standards apply.
Worked example / rule of thumb
Before drilling, confirm: (1) driller license current, (2) permit/notification filed, (3) construction plan meets ADEM standards, (4) grout and seal depths specified. After completion, submit the well log and construction record. When in doubt, contact ADEM's well program - the rule of thumb is "permit before you drill, report after you finish."
Groundwater, Aquifer Science, and Water Quality
Core concepts
Understand aquifer types (unconfined, confined, perched), porosity vs. permeability, and the water table. Know the difference between static water level, pumping water level, and drawdown, and the cone of depression around a pumping well. Understand recharge and discharge, transmissivity and storativity, and how pumping affects neighboring wells (interference). Know basic water quality parameters: pH, hardness, iron, manganese, nitrate, arsenic, and coliform bacteria. Understand that contamination can come from surface sources (nitrate, bacteria) or geologic sources (arsenic, radon, fluoride). Know the importance of wellhead protection and proper sampling.
Traps
Questions often confuse porosity (capacity to hold water) with permeability (ability to transmit it) - high porosity does not guarantee high yield. Another trap is confusing a confined aquifer (artesian, under pressure) with an unconfined one (water table). Watch for the misconception that deeper water is always cleaner - geologic contaminants like arsenic can occur at depth. Also, a single sample does not establish water quality; sampling technique and timing matter.
Worked example / rule of thumb
If pumping lowers the water level by 20 ft at 100 gpm, specific capacity = 5 gpm/ft. If a neighbor's well goes dry when you pump, you are drawing down the shared aquifer - increase spacing or reduce pumping. Rule of thumb: sample after purging the well and before disinfection for a representative water quality result.