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Kenosha, WI Environmental Rules: Stormwater Management (2026)

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

Key Facts

Billing unit
Equivalent Hydraulic Unit (EHU)
Late fee
1.5% per month after 20 days
Max quality credit
30% EHU reduction, 80%+ TSS removal
Automatic exemptions
Railroads, roadways, wetlands, basins
Appeal path
Committee, then Common Council

Summary

Kenosha runs a dedicated Stormwater Utility under Chapter VIII of its Code, billing every property an Equivalent Hydraulic Unit charge based on impervious surface, with credits up to 30% for onsite treatment facilities. Railroads, roadways, wetlands, and detention basins are exempt.

EHU. An EHU is an Equivalent Hydraulic Unit, which represents a rate of water runoff, (approximately 0.35 cubic feet per second or one hundred fifty (150) gallons per minute), from a typical residential property... Facilities designed to remove no less than eighty (80) percent of the average annual Total Suspended Solids from stormwater runoff from the site will be eligible for up to a thirty (30) percent reduction of the EHU Charge for the property.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 11 Update 1 | Zoning Ordinance: Supplement 9).

Full Breakdown

01. 35 cubic feet per second, or 150 gallons per minute, of runoff from a typical residential property, and classifies impervious surfaces like rooftops, driveways, and parking lots as subject to charges. 5% per month on unpaid balances after 20 days. 06 creates four exemption tiers: railroad tracks and public/private roadways are automatically exempt (Type I); parcels in the Riparian Stormwater Service Area draining directly to Lake Michigan are exempt from EHU charges (Type II); wetlands, waters of the state, detention basins, and certain conservancy or floodway zoning overlays are automatically exempt (Type III); and property owners with qualifying onsite stormwater management or treatment facilities may apply for credits of up to 30% of the EHU Charge for removing 80% or more of Total Suspended Solids, or up to 10% for holding an individual WPDES discharge permit (Type IV).

09 provides a three-tier appeal path: first to the Stormwater Utility Committee within 30 days of a Director's decision, then to the Common Council, with a required application fee and full payment of outstanding charges as a precondition to any appeal.

Violations & Fines

Delinquent Stormwater Utility charges may be placed as a lien on the property under Wis. Stats. §§ 66.0821(4)(d) and 66.0809, or collected as a special charge under Wis. Stat. § 66.0627, per Sections 8.10.C and 8.10.F; a 1.5% monthly late payment charge applies to unpaid balances after 20 days under Section 8.04.C.9.

Frequently Asked Questions

Does Kenosha charge a separate stormwater fee?
Yes. Section 8.04 authorizes a Stormwater Utility service charge billed through the Kenosha Water Utility, made up of a flat Base Charge on every property plus an Equivalent Hydraulic Unit (EHU) Charge tied to impervious surface area.
Can my property get a credit for onsite stormwater management?
Yes. Section 8.06.D allows credits up to 30% of the EHU Charge for facilities removing 80% or more of Total Suspended Solids, and up to 10% for holding an individual WPDES permit, subject to Director approval and an ongoing maintenance plan.
How do I appeal my Kenosha stormwater bill?
Section 8.09 requires filing a written appeal with an application fee to the Stormwater Utility Committee within 30 days of the Director's decision, with a further appeal available to the Common Council, but only after all current charges are paid in full.

Sources & Official References

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