Feb 5, 2026 · Regional Screening Level RSL generic table page provides the default RSLs for use by risk assessors in site screening for chemical contaminants for the assessment of human Health.

Welcome to the "Regional Screening Levels for Chemical Contaminants at Superfund Sites" website. This website was developed with DOE's Oak Ridge National Laboratory (ORNL) under an …

Feb 5, 2026 · The RSL website is now the source of screening levels for all EPA regions. The RSLs are not cleanup standards and should not be used as cleanup levels. The RSL tables provide …

Sep 16, 2024 · The U.S. EPA Regional Screening Levels (RSLs) are risk-based concentration levels used by the EPA to evaluate potential human health risks from chemical contaminants at …

Feb 5, 2026 · US EPA sets primary drinking water standards through a three-step process: First, US EPA identifies contaminants that may adversely affect public health and occur in drinking water with …

Feb 27, 2025 · The RSL website is the source of screening levels for all the EPA regions. The RSL tables provide comparison values for residential and commercial/industrial exposures to soil, air, and …

Feb 5, 2026 · Regional Screening Levels Tables were generated to correct the error of omitting the soil ingestion pathway for 17 chemicals. The correction resulted in a lowering of the residential and …

Jun 26, 2025 · The Regional Screening Level (RSL) Equations Page provides quick access to the equations used in chemical risk assessments. The equations contain the defaults for the exposure …

Feb 11, 2026 · In these tables you will find generic, risk-based RMLs calculated for tap water, air, and soil using the latest toxicity values and exposure assumptions used by EPA’s Superfund program.

Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024 SFO (mg/kg-day)-1 k e y IUR (ug/m3)-1 k e y RfD