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bacteria

Water running from tap
jordanmrcai / Creative Commons

Water filters that you attach to your faucet are known to be good for filtering out heavy metals like lead and disinfectants like chlorine. But they’re not designed to filter out bacteria that can grow in the filter itself.

Inside the Flint water treatment plant.
Steve Carmody / Michigan Radio

The city of Flint has met an EPA deadline to upgrade equipment at the city’s water plant.

The EPA sent the city of Flint a letter one week ago saying the city had until today to install and have operational equipment to add additional chlorine and other chemicals to the city’s water supply.

Flint gets its tap water from Detroit already treated with chemicals to impede the growth of bacteria and other organisms. But chemicals, like chlorine, lose their effectiveness the longer they are in the system.