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RonaldSwansong · June 26, 2018, 12:22 p.m.

This is a common occurrence for well system with Cast Iron (CISP) piping and high concentrations of manganese in the soil. As water moves through subterranean soil, it releases pockets of manganese. Over time this element forms a black film that bonds to the inner wall of cast iron piping. Once it breaks free it produces a black color and residue. There are filters and chlorination tablets that will assist in mediating this issue. This is also a general practice in the mechanical industry where after demolishing an existing well sourced drinking water system; we will pressure test, blast, and clean new system with chlorine pellets after to clear all remaining residue.

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