Stormwater Management: Alpharetta vs Roswell
How do stormwater management rules compare between Alpharetta, GA and Roswell, GA?
Alpharetta and Roswell have similar restriction levels.
Alpharetta, GA
Fulton County
Stormwater development in Fulton County is regulated under Chapter 26 Article IV (Stormwater Management) and the Fulton County Comprehensive Stormwater Management Design and Criteria Manual.
View full Alpharetta rules →Roswell, GA
Fulton County
Roswell is the Local Issuing Authority for the State NPDES Construction General Permit and enforces a Soil Erosion, Sedimentation, and Pollution Control Ordinance. Projects disturbing more than 5,000 sq ft require the current GASWCC checklist on plans plus phased erosion-control plans (initial, intermediate, final).
View full Roswell rules →Key Facts Comparison
| Fact | Alpharetta | Roswell |
|---|---|---|
| Code | §26-127 | - |
| LDA trigger | 1 acre | - |
| MS4 | Phase I | - |
| LIA Authority | - | Roswell Engineering |
| Threshold | - | 5,000 sq ft disturbed |
| Plan Stages | - | Initial, intermediate, final |
| State Permit | - | NPDES Construction General Permit |
| Max Penalty | - | $2,500/day per violation |
Highlighted rows indicate differences between cities.
Alpharetta FAQ
Can I dump used motor oil down a storm drain?
No — illicit discharge is a state and county violation.
Do I need stormwater detention?
Yes for any project disturbing 1+ acre.
Roswell FAQ
Do I need a stormwater plan for my home addition in Roswell?
If your project disturbs more than 5,000 square feet of soil you need a Land Disturbance Permit and phased ES&PC plans. Most single-family additions stay below this threshold but driveways, pools, and grading work can push you over.
Who enforces stormwater rules in Roswell?
Roswell Engineering is the Local Issuing Authority for the state NPDES construction permit and enforces both state and local erosion-control rules.
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