Advanced Groundwater Treatment: Alabama Grade III
Under ADEM Admin. Code 335-10-1-.02(b), an advanced groundwater treatment plant is one employing "any treatment of greater technical sophistication than aeration, disinfection, corrosion control, pressure filtration and fluoridation" applied to well/spring water — i.e., anything beyond what a basic Grade II plant does. In practice this usually means the groundwater has a water-quality problem that basic treatment cannot fully solve.
Iron and manganese removal
Groundwater in many parts of Alabama carries dissolved (reduced) iron and manganese, which are not health hazards at typical levels but cause reddish-brown or black staining, metallic taste, and can foul fixtures and clog pressure filter media over time. The standard approach is oxidation (aeration, chlorine, or potassium permanganate) to convert soluble Fe²⁺/Mn²⁺ into ins