Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 304 - EFFLUENT STANDARDS
Subpart A - GENERAL EFFLUENT STANDARDS
Section 304.103 - Background Concentrations

Universal Citation: 35 IL Admin Code ยง 304.103
Current through Register Vol. 48, No. 38, September 20, 2024

Because the effluent standards in this Part are based on concentrations achievable with conventional treatment technology that is largely unaffected by ordinary levels of contaminants in intake water, they are absolute standards that must be met without subtracting background concentrations. However, these rules do not intend to require users to clean up contamination caused essentially by upstream sources or to require treatment when only traces of contaminants are added to the background. Compliance with the numerical effluent standards is not required when effluent concentrations greater than the standards result entirely from influent contamination, evaporation, or the incidental addition of traces of materials not used or produced in the activity that is the waste source.

Disclaimer: These regulations may not be the most recent version. Illinois may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.