Clean Water (NPDES) Program — Sebastian, Florida

Sebastian's Clean Water Program is the city's federal NPDES stormwater program, run by the Stormwater Department under Ordinance No. O-13-11 to keep pollutants out of the municipal storm sewer system.

The program exists because of a permit. The City of Sebastian, along with other local governments, must manage stormwater under the federal Clean Water Act's NPDES discharge permit, which sets guidelines for cutting pollutants in runoff to the maximum extent practicable (City of Sebastian Clean Water Program). The local law behind it is Ordinance No. O-13-11, which set up an urban stormwater quality management and discharge control program for the municipal stormwater system, known as the MS4 (City of Sebastian Stormwater).

In practical terms the MS4 is every public pipe and ditch in town. FDEP defines a municipal separate storm sewer system as a publicly owned set of conveyances, such as ditches, curbs, catch basins and underground pipes, that collects stormwater and discharges to surface waters of the state (Florida Department of Environmental Protection). In Sebastian that means the roadside swales of the Sebastian Highlands, the driveway culverts under them, the catch basins along city streets and the 8.15 mile Elkcam Canal/Collier Creek Canal, all listed on the city Stormwater page.

Enforcement sits with the engineers. Monitoring and inspections of the NPDES program fall under the city Stormwater Department, Engineering inspectors respond to complaints of illicit discharge, and the City of Sebastian reports any illicit discharge violations each year to the Florida Department of Environmental Protection (City of Sebastian). Last verified: October 10, 2026, on the City of Sebastian website.

Sebastian needs an NPDES permit because federal Phase II rules, adopted in 1999 and run in Florida by FDEP, require small urban storm sewer systems that drain to state waters to hold permit coverage.

The legal chain runs from Washington to Tallahassee to City Hall. The city's own summary traces it to the Clean Water Act of 1972, which created NPDES permits for factories and treatment plants, and to the 1987 Water Quality Act, which extended the system to non-point pollution such as bacteria, sediment, oil and grease, heavy metals, pesticides, fertilizers and trash washed off roads, parking lots and yards (City of Sebastian). EPA states that the 1999 Phase II regulation requires small MS4s in Census-defined urbanized areas to obtain NPDES coverage (U.S. EPA).

Florida administers that rule. Under Chapter 62-624 of the Florida Administrative Code, FDEP regulates Phase II systems, and its generic permit was updated in 2021, with minor technical changes made on July 24, 2023 (FDEP Phase II MS4s). Each covered operator, Sebastian included, must run a Stormwater Management Program built on six minimum control measures and submit annual reports during the first five-year term of coverage.

The water at the end of the pipe raises the stakes. The city drainage history describes the St. Sebastian River as a priority waterbody in need of water quality rehabilitation, and notes that Sebastian occupies about 9,000 acres of the 100,000-acre Sebastian River Watershed along nearly 9 miles of its banks (City of Sebastian drainage history). Most Sebastian runoff reaches that river, and then the Indian River Lagoon, through a system that General Development Corporation built in the late 1950s for about 15,000 home sites without the water quality treatment required today. FDEP's 2025 Central Indian River Lagoon Basin Management Action Plan carries a final order effective June 27, 2025 (FDEP Indian River Lagoon BMAPs), and the permit also requires operators to address total maximum daily loads where they drain to impaired waters.

An illicit discharge in Sebastian is anything other than rainwater that enters a storm drain, swale or canal, from paint and motor oil to grass clippings, pet waste and muddy wash water.

Indian River County, which runs its own MS4 around the city, puts it plainly: an illicit discharge is any discharge, accidental or otherwise, of anything other than pure stormwater into an MS4, and storm drains, pipes, ditches and swales all count (Indian River County Stormwater Division). The county lists fuels, chemicals, fertilizers and pesticides among the materials that turn runoff into pollution, with a cleaner Indian River Lagoon as the stated goal.

The City of Sebastian Public Education page explains why two ordinary materials matter most. Sediments are soil particles eroded from construction sites, stream banks and cropland, along with dirt, metal flakes and broken pavement washed off streets; they cloud the water, cover spawning habitat and carry toxic materials (City of Sebastian Public Education). Nutrients such as phosphorus and nitrogen come from sediments, manure, pet wastes, poorly maintained septic systems and misapplied lawn fertilizer, and feed weeds and algae in the St. Sebastian River.

Yard waste is on the same list. The city notes that when manure, pet wastes, leaves and grass clippings reach a lake or stream, bacteria break them down, oxygen levels drop and ammonia may be released, conditions that can kill fish in warm water (City of Sebastian). In a city where nearly every Sebastian Highlands lot drains to a roadside swale rather than a curb, clippings blown into the swale reach the canal network with the next rain.

Physical connections count as well. The Clean Water Program commits the city to identify and remove unauthorized connections to the stormwater system and to review plans so that new ones are not allowed (City of Sebastian). A pipe that sends a washing machine, pool backwash or a business floor drain into a city ditch falls in that category.

Sebastian residents report illegal dumping into storm drains to the Sebastian Police Department Code Enforcement hotline at 772-388-4436, and the stormwater staff also take reports by email at stormwater.violations@cityofsebastian.org.

The city Stormwater page asks anyone who witnesses an illicit discharge or dumping of pollutants to call the Code Enforcement office at (772) 388-4436 (City of Sebastian Stormwater). That number belongs to the Code Enforcement Unit of the Sebastian Police Department, based at 1201 Main Street, Sebastian. Its hotline, option 1, is available 24/7 to leave a detailed message, and messages are followed up by the next business day; complaints can also go through an online form (Sebastian Police Department Code Enforcement).

Anonymity is not available. Florida law prohibits anonymous complaints, so a caller must give a name and address before the City of Sebastian can investigate, and every complaint is subject to the Florida Public Records Act, Chapter 119 (Sebastian Police Department). The Public Education page repeats the rule for stormwater reports: calls must not be anonymous (City of Sebastian).

Outside the city line, the county system applies. Indian River County provides an Illicit Discharge and Illegal Connection Report Form to print, fill out and send to its Stormwater Division, and it routes flooding complaints to the Road and Bridge Division at 772-226-3970 (Indian River County).

After a report, City of Sebastian staff investigate, and a confirmed illicit discharge must be cleaned up at once or the violator is fined for the cost of cleanup and inspections.

The rule is spelled out on the city Tulip Drainage Improvement Project page: city staff will investigate any citizen complaints regarding storm water violations or illicit discharge, and violators will be required to clean up immediately or be fined for the cost of clean-up and the cost of inspections (City of Sebastian Tulip project page). The Engineering Department handles routine inspection and monitoring of all Sebastian stormwater facilities.

Each case also enters the state record. Because the city reports illicit discharge violations annually to FDEP (City of Sebastian), a dumping complaint off Barber Street or in Collier Creek becomes part of the permit file that the state reviews, not only a local code matter. The Public Education page names the City Engineer, the Engineering Inspectors and the Public Works crew as the staff trained to identify, inspect and monitor the storm water impacts of illicit discharges.

Neighbor drainage disputes take a related route. When a neighboring owner does not clean a front yard swale or driveway culvert and water backs onto a lot or the road, the city stormwater FAQ directs the report to the Code Enforcement Division at (772) 388-4436 or online (City of Sebastian stormwater FAQ). Each homeowner is responsible for the swale and culvert in front of the property, while Stormwater Utility staff clean all city baffle boxes quarterly.

Sebastian measures clean water progress through monitored projects such as the Tulip pond near Barber Street, nine nutrient baffle boxes at outfalls and its annual MS4 reports to FDEP.

The Tulip retention pond, west on Tulip Drive from the Barber Street Sports Complex, was completed on December 3, 2016 with help from an EPA Section 319 Nonpoint Source grant passed through FDEP (City of Sebastian). Before sampling began, the City of Sebastian developed an approved EPA Quality Assurance Project Plan, and staff sampled total nitrogen, total phosphorus, total suspended solids and nitrite/nitrate at the pond's inflow and outflow during discrete rain events of roughly 0.20 to 1.5 inches.

Outfall treatment is the second measure. The drainage history page counts 9 baffle boxes with filters at outfall points across Sebastian to reduce nitrogen and phosphorus, and records that in 2015 the city received an achievement award for environmental stewardship from the League of Florida Cities for its water monitoring and testing program (City of Sebastian).

Public involvement is the third. The city lists Earth Day and America Recycles Day as events where residents clean up their properties, and posts dates on a Stormwater Events Calendar that residents can subscribe to by email or phone; on October 10, 2026, the calendar showed no published events for October 2026 (City of Sebastian Stormwater Events Calendar).