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Dealing with Specific Chemicals

Find information on individual contaminants that concern you.

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Arsenic and Drinking Water
What regulations address arsenic in drinking water. Removal requirements to meet MCLs, public notice requirements, and health effects of arsenic in drinking water.
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Lead, Copper, and Drinking Water: Monitoring and Reporting Requirements
How to test for lead and copper in new public water systems. Forms and instructions for PWSs with water known to be corrosive to comply with monitoring and reporting rules. Related guidance and reference materials.
Presentations about Arsenic in Public Water Supplies
What sources tend to contain arsenic. Techniques for removal.
Secondary Constituents
Secondary constituents are regulated in public drinking water. They are called "secondary," instead of primary, because they have no adverse health effects.
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