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Regional Authorization Comparison of State Authorization Tracking System (StATS)

View charts comparing authorization progress of the states in each region using the links below.

How the EPA divides states and territories into 10 "regions."

Region 1 StATS Comparison (pdf) (106.76 KB)
Region 2 StATS Comparison (pdf) (99.43 KB)
Region 3 StATS Comparison (pdf) (100.3 KB)
Region 4 StATS Comparison (pdf) (101.59 KB)
Region 5 StATS Comparison (pdf) (150.3 KB) (FY 2026 Third Quarter data was included in this report)

Region 6 StATS Comparison (pdf) (100.49 KB)
Region 7 StATS Comparison (pdf) (98.95 KB)
Region 8 StATS Comparison (pdf) (100.99 KB)
Region 9 StATS Comparison (pdf) (100.36 KB)
Region 10 StATS Comparison (pdf) (106.09 KB)

Rule Authorization and Adoption Percentage Comparisons:

Charts of Regional Authorization StATS Comparison (pdf) (288.34 KB) (FY 2026 Third Quarter data was included in this report)
Chart of State Authorization StATS Comparison (pdf) (289.57 KB) (FY 2026 Third Quarter data was included in this report)

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