Illegal stormwater connections and illicit discharges to the stormwater system are prohibited. This includes discharging into open channels and streams, as well as to storm sewers.

Prohibited Activities Include:

• Directly discharging anything that is not composed entirely of storm water into the storm sewer conveyance system or into local waterways.
• Connecting any structure that carries anything other than storm water to the stormwater conveyance system or local waterways.

Prohibited Discharges Include:

No person shall discharge or cause to be discharged to any storm sewer, catch basin, or to surfaces that drain to storm sewer any substance other than stormwater, noncontact cooling water, or other clean water. Specifically, prohibited discharges include, but are not limited to, the following:

1. Water containing soap, detergents, solvents, or other cleaning compounds, or mop water or other water contaminated by
   use for cleaning from industrial, commercial or business operations or activities.
2. Oil, grease, food materials, human or animal bodily wastes, paint, or water containing these substances.
3. Any combustible liquid.
4. Grass, leaves, or other organic materials.
5. Any other contaminant that is harmful to the storm sewer system or persons working on or in the storm sewer system, or
   the natural aquatic environment.

What is the Stormwater Conveyance System?

The stormsewer conveyance system is more than just storm drains. It includes roads, storm sewers, gutters, curbs, inlets, piped storm drains, pumping facilities, retention ponds, swales, stormwater channels, ditches, streams, rivers, lakes and any natural or any human-made channels that carry stormwater runoff.

Hazardous Waste Disposal Sites?

Check the City of La Crosse Refuse and Recycling webpage for proper disposal of hazardous materials.