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TMDLs

Upcoming public meetings and hearings
High Priority TMDLs - Atrazine and Simazine Impairment
What is a TMDL
The TMDL Process
303d List
Impaired and TMDL Water Maps

TMDL NPDES Wasteload Allocations (10-12-2022)
Updated TMDL Status - Segments and Impairments
TMDL Reports
Implementation Projects in TMDL Watersheds
TMDL Aerial Assessments
TMDL Brochure
IEPA 2020/2022 Integrated Report Web App (Interactive Map)
Resource Management Mapping Service (Interactive Map)
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Long-Term Vision for Assessment, Restoration, and Protection under the Clean Water Act Section 303(d) Program (The Vision)
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