Which source water type is commonly associated with iron and manganese presence?

Which source water type is commonly associated with iron and manganese presence?

• A. Lakes And Rivers
• B. Wells And Springs
• C. Reservoirs
• D. Groundwater Under The Influence Of Surface Water

Answer: (B)

Iron and manganese are most commonly found dissolved in groundwater because minerals in aquifers dissolve into water during long contact with rock under low-oxygen conditions. Water from wells and springs pulls these metals into solution as Fe2+ and Mn2+. When this water is drawn to the surface and exposed to air, the metals oxidize and precipitate, causing color and staining issues in distribution systems. Surface waters such as lakes, rivers, and reservoirs can contain iron and manganese too, but the typical association is with groundwater from wells and springs. Groundwater under the influence of surface water can also carry these metals, but the clear, familiar link is groundwater.

Iron and manganese are most commonly found dissolved in groundwater because minerals in aquifers dissolve into water during long contact with rock under low-oxygen conditions. Water from wells and springs pulls these metals into solution as Fe2+ and Mn2+. When this water is drawn to the surface and exposed to air, the metals oxidize and precipitate, causing color and staining issues in distribution systems. Surface waters such as lakes, rivers, and reservoirs can contain iron and manganese too, but the typical association is with groundwater from wells and springs. Groundwater under the influence of surface water can also carry these metals, but the clear, familiar link is groundwater.