26-Jun-2007
Lanzara, Federico. -.. I .
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Category:Converts to Roman Catholicism from ProtestantismKris Birely is training to protect Milwaukee's water supply, and the 27-year-old South Milwaukee resident is worried about an extremely rare, microscopic parasite in the city's drinking water.
To address the parasite, the city is disinfecting its water using ozone. Ozone gas, like chlorine gas, is an active ingredient used to destroy germs in water. It also damages DNA, making it an extremely effective disinfectant.
"We use ozone to eliminate all the bacteria and viruses that make us sick and don't want in our water," Birely said.
Ozone has been used since the early 1900s to kill viruses and bacteria, and there have been reports of water companies using ozone to purify their drinking water. But the Milwaukee water system is the first in Wisconsin to use it to treat its water for nearly four decades.
City of Milwaukee Water Department
On Friday, Mayor Tom Barrett said the city will disinfect its drinking water with ozone, and that will remain in effect until the water system is disinfected with ultraviolet light.
According to the Wisconsin Center for Investigative Journalism, the city expects to send 1,200 additional gallons of treated water to its distribution system every day for the next year.
Ozone is the type of disinfectant that was used in the Flint, Michigan, water crisis.
Ozone's use in drinking water has been under consideration since 1990, when the Centers for Disease Control and Prevention issued a report recommending the chemical as a water disinfectant, according to the Wisconsin Center for Investigative Journalism.
Dirty water was linked to a rise in lead exposure. As lead is toxic to the body, the CDC said it is a significant public health concern.
Disinfecting drinking water with ozone is a more expensive method of purifying water, costing $14,400 more per year for a 1 million-gallon treatment. But the cost is only slightly more expensive than the $4 be359ba680
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