Naperville Stormwater and Sewer Connection Rules

Environmental Protection Illinois 3 Minutes Read · published February 21, 2026 Flag of Illinois

Naperville, Illinois requires compliance with local stormwater and sewer connection rules for new construction, redevelopment, and utility work. This guide summarizes the municipal requirements, permit pathways, enforcement, and practical steps for connecting to sanitary and storm systems in Naperville. It draws on the City of Naperville’s official Stormwater information and the City municipal code to identify responsible departments, required submittals, and where to report violations.

Scope and When Rules Apply

The rules apply to:

  • New building connections to sanitary sewer and stormwater systems.
  • Redevelopment that changes impervious area or drainage patterns.
  • Right-of-way excavations and private sewer lateral work that tie into public mains.
Always confirm connection requirements with Naperville Public Works before excavation.

Permits, Approvals, and Standards

Typical requirements include an approved permit or authorization from Naperville Public Works or Engineering, compliance with the city stormwater best management practices, and adherence to the municipal code standards for materials and connection methods. Site drainage plans and construction details may be required as part of permit submission. See municipal code[1]

  • Submit engineered drainage or sewer connection plans where required.
  • Pay applicable permit fees determined at permit intake.
  • Ensure third-party inspection or city inspection as specified in the permit.

Penalties & Enforcement

Enforcement is managed by Naperville Public Works and the City’s code enforcement functions; penalties and remedies are set by the municipal code and applicable ordinances. Specific fine amounts and schedules are not listed on the general stormwater informational pages and must be confirmed in the municipal code or by contacting the enforcement office. See Stormwater information[2]

  • Monetary fines: not specified on the cited page.
  • Escalation for repeat or continuing violations: not specified on the cited page.
  • Non-monetary orders: corrective orders, stop-work orders, restoration directives, and civil court actions are available under the municipal code.
  • Enforcer: Naperville Public Works/Engineering and Code Enforcement divisions handle inspections, notices, and administrative enforcement.
  • Appeals and review: appeals are processed per municipal procedures; specific time limits for appeal or notice periods are not specified on the cited informational pages and should be confirmed with the enforcement office.
If a corrective order is issued, act immediately to document compliance options and deadlines.

Applications & Forms

  • Permit application for sewer/storm connection: see Public Works/Engineering permit intake pages for forms and instructions.
  • Fees: permit fees are established by fee schedules; specific fees are not specified on the cited informational pages.
  • Submission: most applications are submitted to Naperville Public Works or the City permit center; contact details are on official pages in Resources below.
Some minor lateral repairs may require only a right-of-way permit rather than a full stormwater permit.

Action Steps — How to Comply

  • Before work starts, verify applicable permits with Naperville Public Works or Engineering.
  • Prepare and submit required plans and applications, including erosion control and drainage plans if prompted.
  • Schedule inspections as required and retain proof of compliance.
  • Pay fees and address any corrective notices promptly to avoid escalation.

FAQ

Who enforces sewer and stormwater connection rules in Naperville?
The City of Naperville Public Works and Code Enforcement handle enforcement, inspections, and notices.
Do I need a permit to connect a private sewer lateral to the public main?
Yes, permit requirements apply for lateral connections and right-of-way work; contact Public Works for the exact submittal list and fees.
Where can I get the official municipal code language?
The municipal code is available through the City of Naperville’s official code publisher and site; consult the code for ordinance text and definitions.

How-To

  1. Confirm project scope and whether connection work affects public sanitary or storm mains.
  2. Obtain required permit applications and checklist from Naperville Public Works or the permit center.
  3. Submit engineered plans, erosion control measures, and payment as required.
  4. Coordinate inspections and complete any corrective orders to achieve final approval.

Key Takeaways

  • Contact Naperville Public Works early to confirm permit needs and standards.
  • Keep thorough documentation of plans, permits, payments, and inspections to defend against enforcement actions.

Help and Support / Resources

  1. [1] City of Naperville Municipal Code
  2. [2] City of Naperville Stormwater Utility

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