STORMWATER 101 What is STORMWATER RUNOFF? Stormwater Runoff= - PowerPoint PPT Presentation

Lexington County Public Works Stormwater Division STORMWATER 101

What is STORMWATER RUNOFF?  Stormwater Runoff= rainwater, water from washing cars, overwatering lawns  flows over land or impervious surfaces and does not percolate into the ground  Impervious surfaces  Parking Lots  Streets  Roofs

Stormwater: Water Quality • Stormwater accumulates debris, chemicals, sediment or other pollutants from impervious areas • Adversely affect water quality - discharge is untreated .

Common pollutants in stormwater runoff? • Oils • Bacteria • Grease • Trash • Fertilizer • Household Hazardous • Herbicides Waste • Pesticides • Heavy Metals Construction • Sediment • Wastewater • Detergents

What goes in….. Comes out…..

SCDHEC Test Sites Waters that do not meet state water quality standards are placed on DHEC’s Impaired Waters List . Impairments include: • Fecal coliform bacteria • Dissolved oxygen • Heavy metals • Sediment • Macroinvertebrates

TMDL Total Maximum Daily Load • TMDLs are established for waters on the impaired waters list • All green areas drain to impacted test sites • In Lexington County 40% of our watersheds are impaired

Lexington County Initiatives  Stormwater Management Ordinance  Water Quality/Quantity  Water Quality Buffers  Encourage Low Impact Development  Education & Outreach  Mass Media Campaign  Storm Drain Tagging  Car Wash Fundraiser Program  Trash the Poop  Rainbarrel Workshops

Grants in Lexington County Initiative to reduce bacteria levels 319 Hollow Creek and Twelve Mile Creek Watershed Projects 60% cost share for conservation plans 60% toward cost of septic repairs Cooking oil recycling program

Grants in Lexington County  Addresses causes of fecal coliform impairment  Loading from permitted facilities  Sanitary Sewer Overflows (SSOs)  Loading from land runoff  Agriculture  Urban runoff  Loading from Non-Point Sources  Septic Tanks

Minimizing Stormwater Pollution for Homeowners  Landscape  Reduce Lawn Smart Space  Properly  Reduce Handle Stormwater Household Hazardous Waste  Manage Yard Waste and Debris  Properly maintain your vehicle

Questions? Mission: Provide quality services to our citizens at a reasonable cost. Vision: Planned growth for our communities with abundant opportunities for all in a quality environment.