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Disinfecting Public Drinking Water

Guidance for using disinfectants and reporting requirements for public water systems.

Residual Disinfectant Reporting for Public Water Systems
Find requirements and forms for disinfectant reporting for community and nontransient noncommunity PWSs that use only purchased water or groundwater.

Controlling Nitrification in Public Water Systems with Chloramines
Learn how a public water system (PWS) can detect and prevent the degradation of drinking water quality in a water distribution system.

Temporary Free Chlorine Conversion
Information about a temporary switch from chloramine to free chlorine for public water systems and the public.