Stormwater Pollution

In the previous article about Stormwater, we learnt that, as stormwater runs through our stormwater system and out onto the waterways, it becomes polluted. There are many things that can cause stormwater pollution. Here, we look at some of the more common causes of stormwater pollution, as well as what we can do to prevent this pollution.

What Pollutes Stormwater?

Generally, anything left on the ground that can be carried away by stormwater has the potential to be a pollutant. Here are some of the more common stormwater pollutants:

Home Maintenance and Industry

• Paint
• Cement
• Runoff of various fluids and sediments
• Leaking sewage (from damaged pipes)

Gardens

• Chemicals from garden pesticides
• Nutrients from leaves
• Lawn clippings
• Garden fertiliser
• Weeds

Animals

• Animal faeces (i.e. pet dogs and cats)

Motor Vehicles

• Engine oil from motor vehicles
• Brake fluid
• Tyres
• Brake linings
• Car washing detergent

Rubbish/garbage

• General litter
• Plastic
• Polystyrene
• Glass
• Paper
• Cigarette Butts

What Can We Do?

We can all play an important part in improving stormwater quality, and therefore, keeping our waterways clean. The next article explains what we can do to reduce stormwater pollution.