Noblesville, IN Environmental Rules: Stormwater Management (2026)

Chapter 52's Illicit Discharge and Connection subchapter applies to any landowner, permit holder, or developer whose property discharges into a Hamilton County Drainage Board regulated drain, a city street drain, or directly into the White River, Stony Creek, Cicero Creek, Sand Creek, Morse Reservoir, or Hinkle Creek (§ 52.03). Section 52.07 prohibits discharging anything other than stormwater into the municipal storm drainage system or watercourses, including any pollutants that would violate water quality standards, with narrow exemptions for water line flushing, landscape irrigation, foundation drains, non-commercial vehicle washing, dechlorinated pool water, and firefighting activity.

The Noblesville Wastewater Utility administers and enforces the chapter (§ 52.04). When it finds a violation, the Utility issues a written notice of violation that can require monitoring, elimination of illicit connections, a stop-work order, remediation, and payment of costs (§ 52.14). A recipient has seven days to appeal to the Director of the Wastewater Utility, with a hearing within 15 days, and a further appeal runs to the city's Board of Public Works and Safety (§ 52.15). Uncorrected violations after 15 days let the Utility abate the problem itself and place a lien on the property for the cost (§ 52.16), and unpaid abatement costs after 30 days can be pursued as a civil action for costs plus interest and attorney's fees (§ 52.17).

The city can also seek injunctive relief through the Board of Public Works and Safety (§ 52.18). A separate subchapter (§§ 52.30-52.37) governs construction and post-construction stormwater pollution prevention plans, design requirements, and inspections for land-disturbing activity.