Seal of North Whitehall Township

Storm Water

North Whitehall Township

What Is MS4?

Untreated or uncontrolled storm water runoff is the number one cause of impairment in our local waterways. Polluted runoff is often transported through municipal drainage systems until it eventually discharges into streams, lakes, and rivers untreated.

An MS4, or Municipal Separate Storm Sewer System, is comprised of drainage systems, including streets, catch basins, curbs, gutters, ditches, man-made channels and storm pipes, owned by a state, county, city, town, township, borough or other public entity.

The National Pollutant Discharge Elimination System (NPDES) storm water Phase II regulations require permit coverage for storm water discharges from MS4s, mainly those located in urbanized areas. Therefore, most Townships and Boroughs are required to comply with the MS4 Program.

What can you do to help?

Preventing pollution from occurring is a great first step. This can be achieved by considering all the little things you do each day that has effect on the environment and then seek ways to do them in an environmentally friendly way. Consider the following:

Car Washing

Many people don't realize that washing their vehicle can be a form of pollution. If you wash your car on your driveway or other impervious surface it could enter the stormwater system or local waterways. This may result in soap, scum, and oily grit polluting our waterways. To reduce the impact, wash your car on gravel, grass, or other permeable surfaces away from stormwater facilities or open waterways. Better yet, go to a local car wash. Car washes are required to filter and clean their water before it is discharged.

Pet Waste

Pet waste can be a major source of bacteria and excess nutrients in local waters. When walking your pet, pick up the waste and dispose of it properly. Leaving pet waste on the ground increases public health risks by allowing harmful bacteria and nutrients to wash into the storm drain and eventually into local water bodies.


Excess fertilizers and pesticides applied to lawns and gardens wash off and can pollute streams. Use pesticides and fertilizers in accordance with the manufacturer's recommended amount. Never leave yard waste in the street and don't sweep it into storm drains or streams.


Construction activities can be a big source of stormwater contamination if runoff is not properly controlled. Pollutants such as sediment, debris, and chemicals could easily be picked up in stormwater runoff if you or your contractor are not careful. It is easier to protect your stormwater features and waterways than to replace, repair, or clean them if damaged due to improper site maintenance. Be sure to:

  1. Minimize the amount of soil you need to disturb to control erosion and create a grass buffer.
  2. Protect stormwater areas, open waterways, as well as vegetative areas or woodlands with silt fence or silt sock.
  3. Do not cross streams or enter streams with equipment unless you have obtained a stream crossing permit. Protect open waterways from construction activity with silt fence or silt sock.
  4. Inspect the site regularly, especially after each rain event, to ensure all control measures are operating properly.
  5. Clean up the site to eliminate debris, chemicals and other pollutants from being picked up by stormwater runoff.
  6. Sweep dirt off impervious surfaces regularly.
  7. Enter and leave the site using an appropriately stabilized entrance. Do not run through swales or a muddy access.

Vehicle Maintenance

Keeping up with vehicle maintenance helps protect our waterways. When a vehicle leaks oil, antifreeze, brake fluid, or other liquids they lay on the surface of the road. When it rains or snow melts, the runoff picks up the pollutants and carries it into our waterways. Never dump any chemical out on the road, your driveway, or into a stormwater system. Clean up spills immediately with kitty litter or other absorbent material and sweep it up for proper disposal.

Quick Reminders

Do your part to make our waters clean for aquatic life to live in and for us to enjoy by following these quick steps:

  1. Never pour any hazardous substance such as used oil, cleaning supplies, paint, or vehicle fluids outside where it could enter any part of the stormwater system or impervious surfaces. Dispose of them properly
  2. Use pesticides and fertilizers sparingly to prevent excess runoff.
  3. Correct vehicle leaks (dripping fluids) such as oil, grease, gasoline, antifreeze, and brake fluid.
  4. When walking your pet, pick up the waste and dispose of it properly. Leaving pet waste on the ground increases public health risks by allowing harmful bacteria to wash into the storm drain and eventually into local water bodies.
  5. Sweep up litter and debris from sidewalks, driveways, and parking lots to avoid having it wash into stormwater systems which could clog them or wash into waterways.
  6. Inspect your stormwater system or your erosion and sediment control (if under construction) regularly to ensure it is operating properly.


Illicit Discharge

What is an Illicit Discharge?

Discharge of any substance that is composed not entirely of stormwater.

Illicit Discharge

What does that mean?

Only stormwater is supposed to flow into our streams and rivers, this keeps our waterways clean and safe for people and wildlife. Any other substance that is flowing into our stormwater system via storm inlets or roadside swales is considered an illicit discharge.

What is considered an Illicit Discharge?

Some sources of illicit discharge include (but are not limited to): Sanitary wastewater, discharge from septic tanks, car wash wastewater, improper oil disposal, improper disposal of auto and household chemicals, laundry wastewater, spills from roadway accidents, littering, improper disposal of trash and recyclables, improper disposal of pet waste, etc.

According to the United States Environmental Protection Agency (US EPA): “Illicit discharges enter the system through either direct connections (e.g., wastewater piping either mistakenly or deliberately connected to the storm drains) or indirect connections (e.g., infiltration into the stormwater system from cracked sanitary systems, spills collected by drain outlets, or paint or used oil dumped directly into a drain). The result is untreated discharges that contribute to high levels of pollutants, including heavy metals, toxics, oil and grease, solvents, nutrients, viruses, and bacteria to receiving waterbodies. Pollutant levels from these illicit discharges have been shown to significantly degrade receiving water quality and threaten aquatic, wildlife and human health.” (EPA 833-F-00-007 Fact Sheet 2.5 January 2000, revised December 2005)

What can citizens do?

  • Change your behaviors to properly dispose of substances that could pollute our waterways.
  • Be aware of activities that could potentially cause pollution.
  • Actively inform others that their actions could cause pollution.

This is not always easy, but this is OUR home and keeping it clean is necessary for our continued health and survival.

Unfortunately, not everyone is aware their behaviors are causing damage to our health and the environment around us. Please notify North Whitehall Township officials if you witness or observe any illicit discharge within the township.

Please click the image below to report an Illicit Discharge or contact Rich Deemer at (484)-484-8102.

Illicit Discharge Reporting Form

Thank you for your help in keeping our waterways safe and healthy!

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