Stormwater Drainage System Services
The Stormwater Division has the regulatory authority and responsibility for planning, design, construction, maintenance, operation, National Pollutant Discharge Elimination System (NPDES) programs and education, and administration of the City’s stormwater drainage system and the services provided to users of the system.
The stormwater drainage system is a City-maintained network of structures, ditches, channels, swales, basins, treatment systems, gutters, inlets, storm pipes, outfalls, ponds, creeks, rivers, wetlands, and any other stormwter facilities necessary, useful, or convenient for the orderly collection, conveyance, treatment, and disposal of stormwater runoff.
The Stormwater Division is administered in a manner similar to the Water, Wastewater, and Sanitation Divisions under the supervision of the Stormwater Coordinator.
Need to report illicit discharges, illicit connections, or illicit dumping activity?
To report a release of materials that pose an immediate threat to life or a significant threat to the environment, please notify the following agencies immediately:
Frequently Asked Questions (FAQ)Link to page
Stormwater Drainage System Utility
On June 12, 2023, City Council adopted Ordinance No. 4882 which establishes a Stormwater Drainage System Utility and grants the City authority to collect user fees for stormwater drainage system services. These user fees shall be used for the operation, maintenance, and improvement of the City’s stormwater drainage system and would function like the Wastewater, Water, and Sanitation utilities.Link to page
Municipal Separate Storm Sewer System (MS4) Permit
The MS4 permit requires permittees to develop and implement a comprehensive Stormwater Management Program which includes pollution prevention measures, treatment techniques, monitoring, and other appropriate measures to control the quality of discharge to storm drains which flow to waters of the United States.Link to page
"Only Rain Down The Drain"
“Only Rain Down The Drain” is an outreach program to develop a consistent message regarding water quality and stormwater in compliance with the public education and outreach requirements per the City’s Municipal Separate Storm Sewer System (MS4) Permit.Link to page
The Street Sweeping activity is a function of the City of Lewiston Public Works Department in the Street Maintenance Division. A schedule was developed to provide residents with an opportunity once a year to know when street sweeping will occur in their neighborhood, so they can remove their cars from the roadway in advance of the sweeping operation.Link to page
Not All Water Is Treated Equally
The City of Lewiston has two separate water collection systems. The sanitary sewer system collects wastewater from sinks, toilets, showers, and washing machines that is transported through pipes and flows to the wastewater treatment plant (pictured above, left). Whereas storm drains carry water that remains untreated, directly into green spaces and the river (pictured above, right).
The stormwater drainage system is not part of a treatment process at any point which is why it is vital that we all do our part to protect our water and environment by remembering to put “Only Rain Down The Drain”.
- Idaho Department of Environmental Quality (IDEQ) Best Management Practices (BMP) Manual (PDF)
- Idaho Department of Environmental Quality (IDEQ) Construction General Permit (CGP) for Discharge Activities (PDF)
- Stormwater Pollution Prevention Plan (SWPPP) Template (DOC)
- Idaho Department of Water Resources (IDWR) Dry Well Underground Injection Control (UIC) Program Rules
- Erosion Prevention & Sediment Control Field Guide (PDF) @(Model.BulletStyle == CivicPlus.Entities.Modules.Layout.Enums.BulletStyle.Decimal ? "ol" : "ul")>