Frequent Questions

07. How will I know if pathogens, like viruses, are in my drinking water?

When routine monitoring indicates that pathogen or indicator levels are in violation of a treatment technique or above a maximum contaminant level, your water supplier must take steps to improve treatment operations such as upgrading filtration or increasing disinfection to reduce pathogens levels and indicators so that the system returns to compliance. Water suppliers must inform their customers within the period of time specified in EPA’s Public Notification Rule as described below. Additional actions, such as providing alternative drinking water supplies or recommending that consumers boil their water prior to consumption, may be required to prevent serious risks to public health.

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