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Unformatted text preview: haloacetic acids, chloraimes. Cheapest, simplest but not effective against Crypto. Added concerns of storage. Common DBPs: chloroform and dichloroacetic acids. Worry about false positives: not positive in testing but in fact toxic to humans. Actual water content is very important criteria for selecting treatment. Best to treat water before chlorination. NOT DISINFECTING DRINKING WATER IS NOT AN OPTION! Therefore, it is best to expose the public to residues. Increasing water reuse complicates the issue. PCB: stable in environment. Used in transformers, plastics, newsprint, inks. .. now banned. Low rate of biodegradation by bacteria. Resistant to heat or chemical treatment. Dissolve readily in fatty tissues of fish, birds, animals and humans. Direct human poisoning from accidents. Sources: drinking water, air, food*....
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- Winter '10