What is the Stormwater System
- Description of System
- Watershed Map

Why It's Regulated
 - What is NPDES
     Phase I Requirements
     Phase II Requirements

Where Stormwater
Pollution Comes From

- Residential
- Streets and Highways
- Construction Sites
- Industry
- Stores and Offices
- Farms and Agriculture

What's Being Done by NCCO
and DelDOT

- Monitoring Programs
     Dry Weather
     Wet Weather
- Drainage System Inventory
- Planning
- Construction Sites
- Streets and Highways
- BMPs
     Structural
     Non-Structural
- Public Education
- Maintenance Corporation

How You Can Help

- Household Chemicals
- Landscaping and Gardening

Glossary

Frequently Asked Questions

How to Report Problems

Links

Contact Us

   
 


• Apply only the recommended amount of fertilizer needed and calibrate   the spreader’s settings.

• Never apply fertilizer to frozen ground or when rain has been forcasted.

• When landscaping, select plants that have low requirements for water,   fertilizers, and pesticides.

• Cultivate plants that discourage pests. Minimize grassed areas which   require high maintenance.

• Preserve existing trees, and plant trees and shrubs to help prevent   erosion and promote infiltration of water into the soil.

• Use landscaping techniques such as grass swales (low areas in the   lawn) or porous walkways to increase infiltration and decrease runoff.

• Other landscaping tips:

       • Install wood decking or bricks or interlocking stones instead of          impervious cement walkways.

       • Install gravel trenches along driveways or patios to collect water and          allow it to filter into the ground.

       • Restore bare patches in your lawn as soon as possible to avoid          erosion.

• Use organic fertilizers such as grass clippings on your lawn so that   nutrients in the clippings are recycled and less yard waste goes to   landfills. (By leaving grass clippings in the lawn or composting them, you   can save up to 25% on fertilizer costs)

• Compost grass clippings, brush, and other yard waste – never dispose of    these materials in a storm drain or local stream. Compost is a valuable    soil conditioner which gradually releases nutrients to your lawn and    garden. (Using compost will also decrease the amount of fertilizer you    need to apply.) In addition, compost retains moisture in the soil and    thus helps you conserve water.

• Wash your car with low phosphate detergents in a grassy area   where the water can infiltrate or take it to a   commercial car wash.

• As part of your lawn maintenance, collect your pet waste and dispose of   it in the garbage or flush it .

• If you elect to use a professional lawn care service, select a   company that employs trained technicians and   follows practices   designed to minimize the use of fertilizers and pesticides.

• Direct downspouts onto the lawn, garden, or landscaped areas.

• Collect roof runoff in a rain barrel and use the water to irrigate the lawn or   garden.

• If you live along a stream:

       • Allow a vegetated buffer to grow along the stream bank; do not mow          to the edge

       • Plant native trees and shrubs along streams to stabilize banks, trap          pollutants, and provide stream habitat.

 

       The University of Delaware landscape series