['Water Programs']
['Water Quality', 'Safe Drinking Water', 'Maximum Contaminant Levels']
05/03/2022
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(a) The maximum contaminant level for arsenic applies only to community water systems. The analyses and determination of compliance with the 0.05 milligrams per liter maximum contaminant level for arsenic use the requirements of §141.23.
(b) The maximum contaminant level for arsenic is 0.05 milligrams per liter for community water systems until January 23, 2006.
(c) [Reserved]
(d) At the discretion of the State, nitrate levels not to exceed 20 mg/l may be allowed in a non-community water system if the supplier of water demonstrates to the satisfaction of the State that:
(1) Such water will not be available to children under 6 months of age; and
(2) The non-community water system is meeting the public notification requirements under §141.209, including continuous posting of the fact that nitrate levels exceed 10 mg/l and the potential health effects of exposure; and
(3) Local and State public health authorities will be notified annually of nitrate levels that exceed 10 mg/l; and
(4) No adverse health effects shall result.
[65 FR 26022 May 4, 2000; 66 FR 7061 Jan. 22, 2001; 66 FR 28342 May 22, 2001]
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['Water Programs']
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