Mobile Car Wash Permit Requirements in Evansville, IN

1. EIN (Employer Identification Number)

   Required if you have employees or operate as an LLC or corporation. Free from the IRS, obtained instantly online.

   Official government source

   Free·Immediate (online application)

   Free

   Immediate (online application)

2. EPA Stormwater Compliance — Clean Water Act Section 402

   Mobile car wash operations that discharge wash water are subject to the federal Clean Water Act. The EPA's National Pollutant Discharge Elimination System (NPDES) prohibits discharge of polluted wash water to storm drains or waterways without a permit. Most mobile operators achieve compliance by using containment systems and disposing of water via sanitary sewer. Larger operations (e.g., fleet washing facilities) may require an NPDES permit.

   Official government source

   Free (containment equipment: $200–$1,500)·Before first wash

   Free (containment equipment: $200–$1,500)

   Before first wash

1. Indiana Business Registration (Secretary of State) and County DBA Recording

   A mobile car wash or auto detailing business structured as an LLC, corporation, or partnership registers with the Indiana Secretary of State through the INBiz portal. A sole proprietor or general partnership using a trade name instead records a Certificate of Assumed Business Name with the County Recorder in the county where the business is located — not with the Secretary of State and not with a county clerk. Recording fees are set locally under IC 36-2-7-10 and differ by county, so check your own county's recorder fee schedule. An LLC is worth considering because mobile operations work on customers' property and carry inherent liability.

   Official government source

   Secretary of State entity filing fees are published on the INBiz portal. County DBA recording fees are local and vary: $35 in Marion County, $25 in Allen County, $25 in Vanderburgh County — there is no statewide flat fee.·Online INBiz entity filings are processed by the Secretary of State; no fixed turnaround is published. County recorders typically record an assumed-name certificate at the counter while you wait, or by mail.

   Secretary of State entity filing fees are published on the INBiz portal. County DBA recording fees are local and vary: $35 in Marion County, $25 in Allen County, $25 in Vanderburgh County — there is no statewide flat fee.

   Online INBiz entity filings are processed by the Secretary of State; no fixed turnaround is published. County recorders typically record an assumed-name certificate at the counter while you wait, or by mail.

2. Indiana Environmental / Stormwater Compliance

   Mobile car wash operations generate wastewater containing detergents, surfactants, oils, and road grime. Indiana environmental regulations — consistent with federal Clean Water Act requirements — prohibit discharge of this wash water to storm drains, street gutters, or waterways. Operators must use a wastewater containment mat and recovery system (wet/dry vacuum or pump), or must ensure wash water flows to a sanitary sewer inlet. Operators using hazardous cleaning solvents or degreasers may require a state permit. Contact the Indiana Department of Environmental Management (IDEM) for compliance guidance.

   Official government source

   Free–$200 (registration or permit fee, if required)·1–4 weeks (if permit required; otherwise immediate with self-compliance)

   Free–$200 (registration or permit fee, if required)

   1–4 weeks (if permit required; otherwise immediate with self-compliance)

3. Indiana Sales Tax Registration

   Car washing and auto detailing services may be subject to Indiana sales tax depending on how the service is structured (e.g., tangible products sold alongside labor). Confirm your specific tax obligations with the Indiana Department of Revenue before registering.

   Official government source

   Free–$25·Immediate–1 week (online)

   Free–$25

   Immediate–1 week (online)

1. No General Business License in Evansville

   Evansville does not require a general business license for mobile car wash and auto detailing businesses. The city's licensing list covers only specific regulated activities and does not include this trade.

   Official government source

   Not applicable·Not applicable

   Not applicable

   Not applicable

2. Stormwater / Wash-Water Discharge Compliance (no permit issued)

   Discharging mobile car wash water — which carries detergents, oils and road grime — to storm drains, gutters or waterways is prohibited under Indiana's stormwater rules, administered by the Indiana Department of Environmental Management and enforced locally through Evansville's MS4 stormwater program. There is no registration or permit to apply for: operators must capture runoff with a containment mat or berm, recover it with a wet/dry vacuum or pump, and dispose of it at a sanitary sewer connection or licensed facility.

   Official government source

   No permit or registration fee — this is an ongoing compliance obligation, not a licence·Ongoing compliance; put containment and recovery practices in place before operating

   No permit or registration fee — this is an ongoing compliance obligation, not a licence

   Ongoing compliance; put containment and recovery practices in place before operating

3. Evansville Water & Sewer Utility / MS4 — Wash Water Discharge Compliance

   Vanderburgh County Environmental Health issues no chemical-use registration for mobile detailing — its permit programs are food establishments, public pools, onsite sewage, body art, lead investigations and vector control. What actually applies is discharge compliance: wash water containing detergents, degreasers or solvents may not enter storm drains, and must be captured and disposed of through the sanitary sewer with Evansville Water & Sewer Utility approval. Businesses using hazardous chemicals must keep a Safety Data Sheet for each product on hand under the federal OSHA Hazard Communication Standard.

   Official government source

   No registration fee — this is a discharge compliance obligation, not a permit·Ongoing compliance

   No registration fee — this is a discharge compliance obligation, not a permit

   Ongoing compliance

4. Evansville Home Occupation Permit (if operating from residence)

   Operating a business from a residence in Evansville/Vanderburgh County requires a Home Occupation improvement location permit from the Evansville-Vanderburgh County Area Plan Commission. Mobile car wash operators who store the vehicle, equipment, or chemicals at home should confirm the use qualifies; typical restrictions include no client or employee traffic at the residence, no exterior signage, and limits on chemical storage.

   Official government source

   $100 (Home Occupation improvement location permit, Area Plan Commission fee schedule effective January 1, 2026)·Apply through Area Plan Commission permitting before operating

   $100 (Home Occupation improvement location permit, Area Plan Commission fee schedule effective January 1, 2026)

   Apply through Area Plan Commission permitting before operating

Official Sources

• Evansville Business Licensing
• Indiana Environmental Quality — Water Programs
• EPA NPDES — Stormwater Discharges
• IRS EIN Application

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