Residential Water Inhalation Risk Calculator

This calculator is currently in the beta stage of development - please report any bugs encountered to the RAIS Team. Thank you.

Do you have a previously saved file?
(dated 2026-04-21 or newer)
File Number:
Do you want to use the same chemicals and chemical info type?


Using the Residential Water Inhalation Risk Calculator


Project Title (optional)


Select Shower Scenario Type




Select Data Source




Include Risk Output




Select RfD/RfC Type:



*Chronic selection will retrieve Chronic-only RfDs/RfCs; Subchronic selection will first retrieve subchronic values where possible and then use chronic values.

Select Chemicals




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