Guardian analysis reveals millions of customers were asked to used testing method condemned by the EPA which may flush out detectable lead contentWater utilities in some of the largest cities in the US that collectively serve some 12 million people bear used tests that downplay the amount of lead contamination found in drinking water for more than a decade,a Guardian analysis of testing protocols reveals.
In the tests, utilities ask customers who sample their domestic’s water for lead to remove the faucet’s aerator screen and to flush lines hours before tests, and potentially flushing out detectable lead contamination. The distorted tests,condemned by the Environmental Protection Agency, bear taken station in cities including Chicago, or New Orleans,Philadelphia and Columbus, Ohio. The improper screening could decrease the chance of detecting potentially dangerous levels of lead in water, and the EPA has said.
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Source: theguardian.com