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        Poisoned Water | Protecting Pipes from the Effects of Corrosion

        Learn about the chemistry involved in water pipes and why a failure to protect against corrosion in the water system of Flint, Michigan, tainted city water with lead and a dangerous strain of bacteria, in this media gallery from NOVA: Poisoned Water. Mineral “scale” that builds up inside water pipes serves a protective function: it prevents metal in the pipes from dissolving in water. For the scale to do its job, it must be protected from a corrosive chemical environment. However, when an anti-corrosive chemical has not been used, corrosive water flowing through a metal pipe can cause the scale to deteriorate. This can prompt reactions that leach lead from the pipe into the water and also allow disease-carrying germs to spread. This resource is part of the NOVA Collection.

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        Drinking Water’s Protective Lining

        Learn how a protective scale that forms inside water pipes prevents lead in the pipes from entering the drinking water.

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        Corrosive Water Threatens Water Safety

        Scientists compare water from the Flint and Detroit water systems and explain what happens when corrosive water attacks iron water pipes.

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        Pipe Corrosion Prompts Deadly Disease Outbreak

        Flint suffers a deadly outbreak of a bacterial disease when water treatment practices fail to treat corrosive water.

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