Flint rewrites water testing directions blamed in lead pollution crisis

Michigan city's instructions called on residents to 'pre-flush' pipes, a process criticized by federal authorities for reducing levels of toxins detected

The city of Flint has belatedly rewritten water testing instructions that have been blamed for the gross underestimation of its lead pollution crisis, with the Michigan government to be sued this week over its continued support for the distorted tests revealed by the Guardian.

Related: 'It's all just poison now': Flint reels as families struggle through water crisis