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. 2007 Apr;97(Suppl 1):S130–S135. doi: 10.2105/AJPH.2006.094441

TABLE 2—

Recommendations for Household Water Disinfection From Federal and Hurricane-Affected State Agencies: United States, 2005

Disinfection With Liquid Chlorine
Agency or State Recommended Duration of Boiling Type of chlorine recommended Clear water Cloudy water Chlorine Tablets Tincture of Iodine Iodine Tablets
Environmental Protection Agency: www.epa.gov/safewater/faq/emerg.html 1 min 1% (nonscented, household chlorine bleach) 10 drops per quart; 40 drops per gallon Double the amount 1 tablet per gallon 5 drops 1 tablet per gallon
4—6% 2 drops per quart; 8 drops per gallon (1/8 teaspoon) Double the amount
7—10% 1 drop per quart; 4 drops per gallon Double the amount
Centers for Disease Control and Prevention: http://www.bt.cdc.gov/disasters/foodwater.asp 1 min Household chlorine bleach 1/8 tsp per gallon (approximately 0.75 mL) 1/4 tsp per gallon (approximately 1.50 mL) Follow directions on label . . . Follow directions on label
Alabamaa: http://www.adph.org/environmental . . . . . . . . . . . . . . . . . .
Louisiana: http://www.dhh.louisiana.gov/offices/faq.asp?ID=145 1 min Unscented, liquid chlorine bleach 1/8 tsp per gallon 1/4 tsp per gallon . . . 5 drops . . .
Mississippi: www.health.ms.gov/msdhsite/index.cfm/23,0,148,html 1 min Unscented, ordinary household chlorine bleach 1/8 tsp per gallon . . . . . . . . . . . .
Texas: http://www.dshs.state.tx.us/news/releases/20050926.shtm 1 min Ordinary household bleach 1/8 tsp (approximately 8 drops) per gallon . . . . . . Follow directions on label . . .

aThe Alabama Department of Health Web site has a link to the Centers for Disease Control and Prevention emergency hurricane health information.