Softening does more than remove hardness — in the right source water, it is also a regulatory compliance technology for naturally occurring radioactivity, and it creates a downstream corrosion-control obligation that a Class A operator has to manage as part of the same system, not as a separate problem. This second Class A guide on softening covers radionuclide removal, the federal rule that governs it, residuals disposal considerations, and how softened water ties into Lead and Copper Rule corrosion control.
Radionuclides in Groundwater: Radium and Barium
Radium-226 and radium-228 are naturally occurring radioactive elements that can leach into groundwater from certain geologic formations as water moves through rock and soil — they are not contamination from an industrial source, but a natural water quality characteristic of some aquifers. Barium is a naturally occurring metal that