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Indiana Department of Transportation

INDOT > Current Programs > Green Initiatives > Storm Water Storm Water

Water pollution degrades surface waters making them unsafe for drinking, fishing, swimming, and other activities.

Storm water is water from rain or melting snow. It flows from rooftops, over paved streets, sidewalks and parking lots, across bare soil and lawns and into storm drains and streams. As it flows, runoff collects and transports litter, soil, pet waste, road salt and sand, pesticides, fertilizer, oil and grease, soaps and detergents, and a host of other pollutants. Storm water drains directly into nearby creeks, streams and rivers without receiving treatment at a wastewater treatment plant.

Storm water runoff is major contributor to water pollution nationwide and one of the great challenges of pollution control.

Untreated runoff degrades waterways. It affects water quality and the environment and reduces how much we can use streams, rivers and lakes for fishing, swimming and as a source for drinking water.  Litter and sediment can also reduce storm drain and stream capacity, which contributes to flooding.

Day-to-day activities are major causes of storm water pollution:

  • Litter tossed out of vehicles or from uncovered truck loads
  • Used oil, paint, or chemicals poured down storm drains
  • Improper disposal of pet waste and poorly maintained septic tanks
  • Over-fertilizing of lawns and gardens
  • Cleaning tools outdoors

Public actions make a huge impact. Learn how you can reduce storm water pollution today and protect our environment now and for the future.

Technical Resources

INDOT storm water technical resources provide specifications, guidelines and parameters for best management practices in reducing storm water runoff pollution in agency operations, and in road and facility construction and maintenance.

INDOT Links

Related Links

Contact Information

Kathy Allen
Storm Water Specialist
Indiana Department of Transportation
100 N. Senate Ave., N642
Indianapolis, IN 46204
(317) 232-5361
kallen@indot.in.gov