Historic Water Quality Monitoring Data
Access H2NOW Chicago’s Historic Data
We believe that water quality information for our local waterways should be accessible to everyone. In support of this effort, we’re making H2NOW Chicago’s historical water quality data free and available to access on our website, offering valuable insights into the health of Chicago's waterways over time. Explore the key indicators that inform our understanding of water quality and guide future actions for cleaner, safer waterways.
Access H2NOW Chicago’s historical water quality data from 2021 to 2024 by completing the form below. Once submitted, you will receive an email with links to view and download data sheets for each river branch, as well as future communications about H2NOW Chicago and Current.
By submitting this form, you confirm that you have read and agree to our terms and conditions for data usage.
If you don’t receive an email right away, check your spam folder.
Having trouble accessing the data or have questions? Reach out to us at h2now@currentwater.org
Thank you for your interest in the health of our waterways! If you publicly reference H2NOW data anywhere, please be sure to cite H2NOW as your data source!