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Aquatic Resource Alteration (ARAP)
Get resources to help you with ARAP permitting. The ARAP program is the way TDEC regulates physical alterations to Tennessee waters. Most commonly, this involves streams, wetlands, and ponds.
Includes:
- What is ARAP?
- Who needs an ARAP permit?
- What are WOTS?
- How do I get a permit?

Subsurface Sewage Disposal Systems (SSDS)
Get resources to help you with SSDS permitting. The SSDS program is a part of TDEC’s groundwater program and regulates sewage disposal. The permits issued in this program are widely called “septic permits” or “perc tests”.
Includes:
- What is SSDS?
- Who needs an SSDS permit?
- How do I get a permit?
- How do septic systems work?

TN Environment
Explore resources to help you learn about, value, and enjoy our amazing environment.
Includes:
- Content about general environmental science principles as they apply to Tennessee
- Content about unique aspects of Tennessee’s environment
- Activities, helpful documents, and crafts
- Art
