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Aurora, IL Environmental Rules: Stormwater Management (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Administrator
City engineer (§18-201)
Fine range
$25 to $750 per day
Detention bonus
110% storage, two named creek watersheds
Applies
Citywide, all four counties
Adopted by
Ord. No. O01-67 (2001)

Summary

Aurora, Illinois regulates stormwater management citywide by adopting the Kane County Stormwater Ordinance by reference, with the city engineer as administrator and site-specific detention requirements for new development in Kane County.

The Kane County Stormwater Ordinance as now or hereafter amended is adopted by reference as if set forth in this chapter. The city engineer is hereby designated the administrator for said ordinance. The plan commission is hereby designated the oversight committee for said ordinance. The city council is hereby designated the decision making authority for said ordinance.

Full Breakdown

The city has adopted the Kane County Stormwater Ordinance by reference under Aurora Code of Ordinances § 18-201, with the city engineer designated as administrator, the plan commission as oversight committee, and the city council as decision-making authority. Section 18-202 revises the county rules locally, requiring detention/storage sizing under a modified rational or SCS-curve-number method, with a 10% storage bonus in the Indian Creek and Blackberry Creek watersheds. The ordinance applies citywide across all four counties Aurora spans. Kane, DuPage, Will and Kendall.

Violations & Fines

Violating a stormwater permit condition draws a civil fine of $25 to $750 per day, plus possible permit revocation and a written stop-work order halting all site work.

Frequently Asked Questions

Does Aurora, Illinois have its own stormwater code?
No. Aurora adopts the Kane County Stormwater Ordinance by reference under § 18-201, with local amendments in § 18-202 for detention sizing, then enforces it citywide through its own city engineer and permit system.
Who enforces stormwater rules in Aurora?
The city engineer administers the adopted ordinance, the plan commission provides oversight, and the city council is the final decision-making authority for permits and disputes under § 18-201.

Sources & Official References

Other rules in Aurora

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Stormwater Management in Nearby Cities

How other cities in this county handle stormwater management.

Elgin, IL
Some Restrictions