| 11. | Many cities, including Seattle, are beginning to move to ozonation, the oldest method of purifying water.
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| 12. | But the EPA isn't recommending widespread ozonation to replace chlorination until results come in from further research.
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| 13. | Since its outbreak, the city has adopted an $ 89 million package of water upgrades that will include ozonation.
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| 14. | Although few by-products are formed by ozonation, ozone reacts with bromide ions in water to produce bromate.
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| 15. | As an alternative, some cities are switching to a form of water treatment called ozonation, which uses ozone gas to kill microorganisms.
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| 16. | The finishing touch of ozonation should be filtering through granulated activated carbon, which raises the cost about $ 25 per year per hookup.
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| 17. | In making Dasani, the purification process _ called ozonation _ led to the formation of too much bromate, a derivative of bromide.
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| 18. | Some leading scientists in the main water society, membrane filtration, reverse osmosis, ozonation, or other advanced treatments for irrigation water.
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| 19. | In 1998, they'll begin ozonation _ a treatment that uses ozone gas, a powerful disinfectant, to kill pests in water.
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| 20. | This shows that it can protect itself from the harsh conditions in the treatment facility, or that the bacteria itself is resistant to ozonation.
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