Cranston, RI Environmental Rules: Stormwater Management (2026)

Illicit discharges to the municipal storm sewer system are comprised of non-stormwater discharges that are expressly prohibited from the municipal storm sewer system unless the discharges have received all required federal, state and local permits including the National Pollutant Discharge Elimination (NPDES) or is included in one of the following categories of discharges: water line flushing, landscape irrigation, diverted stream flows, rising groundwaters, uncontaminated groundwater infiltration, uncontaminated pumped groundwater discharges from potable water sources, foundation drains, air conditioning condensation, irrigation water springs, water from crawl space sumps, footing drains, lawn watering, individual residential car washing, flows from riparian habitats and wetlands, dechlorinated swimming pool discharges, street wash water discharges, flows from firefighting activities. If an illicit discharge to the municipal storm sewer system is detected, the owner shall cease the discharge. If the discharge does not cease within seven calendar days, the owner may be fined seventy-five dollars ($75.00) per day that the violation goes unrepaired and the city of Cranston shall have the right to take whatever action it deems necessary to correct the violations