Erosion Control: Elmhurst vs Naperville
How do erosion control rules compare between Elmhurst, IL and Naperville, IL?
Naperville has fewer restrictions than Elmhurst.
Elmhurst, IL
DuPage County
Illinois law authorizes Soil and Water Conservation Districts to establish erosion control standards while NPDES rules require erosion controls at construction sites of one acre or more.
View full Elmhurst rules →Naperville, IL
DuPage County
Naperville requires erosion and sediment control for all land-disturbing activities under Title 5, Chapter 7 (Storm Runoff Control). Construction projects must submit stormwater management plans showing erosion control measures. The city adopts DuPage County's Stormwater and Flood Plain Management Ordinance for flood plain areas.
View full Naperville rules →Key Facts Comparison
| Fact | Elmhurst | Naperville |
|---|---|---|
| SWCD Act | 70 ILCS 405/ | - |
| NPDES trigger | 1+ acre disturbed | - |
| Stabilization | Within 14 days inactive | - |
| BMPs required | Silt fence, sediment basins | - |
| Plan | Erosion and sediment control | - |
| Code | - | Title 5, Ch. 7 (Storm Runoff) |
| Permit Required | - | Yes, for land disturbance |
| County Standard | - | DuPage Co. Stormwater Ord. |
| Maintenance | - | Owner responsibility in perpetuity |
Highlighted rows indicate differences between cities.
Elmhurst FAQ
When does Illinois require erosion control on construction sites?
Any project disturbing one or more acres triggers an ILR10 NPDES permit requiring an erosion and sediment control plan with best management practices like silt fence and sediment basins.
How quickly must disturbed soil be stabilized in Illinois?
Under the ILR10 general permit, disturbed areas left inactive for 14 or more days must be temporarily or permanently stabilized using mulch, seeding, sod, or other approved cover.
What is a Soil and Water Conservation District?
A local subdivision under 70 ILCS 405 that provides technical assistance, conservation planning, and may set standards for soil loss limits within its boundaries to control erosion.
Naperville FAQ
Do I need an erosion control plan for construction in Naperville?
Yes. All land-disturbing activities require a stormwater management plan with erosion control measures. The City will only issue construction permits to projects that demonstrate proper stormwater runoff management during construction.
What erosion control standards does Naperville follow?
Naperville follows its own Storm Runoff Control ordinance (Title 5, Chapter 7) and has adopted DuPage County's Stormwater and Flood Plain Management Ordinance for flood plain areas. Best management practices like silt fencing and sediment basins are required.
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