This is how hard it is to clean Flint's Water

[Hannibal XKeymaster 23 pts]

This is how hard it is to clean Flint’s Water

IT IS POSSIBLE to trace every drop of toxic water spewed from Flint, Michigan back to two terrible decisions. The second was switching the city’s supply from treated Lake Huron water to the corrosive broth in the Flint River. Left untreated, that water unleashed the disaster stored in the walls of the city’s first bad decision: its lead pipes.

In the past few weeks, the nation’s attention has increasingly focused its attention on Flint’s public health disaster. At least 15 percent of the city’s homes have water with lead levels exceeding the safe limit established by the federal government. Several of those homes had water with lead levels 900 times above the safe limit. Poor political decisions caused the crisis, but it wouldn’t have happened at all if the lead pipes weren’t there to begin with. The current solution is a stopgap—spiking the water supply with an anticorrosive chemical. But if the powers that be want to eliminate the risk completely, they will ultimately have to replace all the lead plumbing. A September estimate, only recently released by Michigan governor Rick Snyder, puts the cost of replacing all the lead pipes in Flint at $60 million. And the project will take 15 years.

Most of the corroded pipes in Flint—20,000 to 25,000 in total—are what is known as service lines. These are one inch in diameter, and connect homes to the larger, main pipes running under the middles of streets. (The mains are cast iron.) Because Flint is in Michigan, and Michigan is a very cold place, the service lines have to be buried about three and a half feet deep, below the frost line. “But most of the main pipes are between five to seven feet deep, so the service lines are at a similar depth,” says Martin Kaufman, a geographer at the University of Michigan-Flint. So that’s the basic challenge: dig up several thousand miles of poisonous pipe buried as deep as dead bodies.

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