If water hasn't been used in the last 6 hours, run water from the cold tap until it's at its coldest. The longer water has been sitting in your home's pipes, the more lead it may contain. To take extra measures to avoid waterborne cryptosporidiosis, bring your drinking water to a full boil for one minute. Use cold water for consumption. When drinking, cooking or making baby formula, use only cold water.
Hot water is likely to contain higher levels of lead.
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