For this part of Te Taiao O Tamaki Water cycle, we had to do a brainstorm about pollutants, and how they get into stormwater drains, and if we have seen them in Johnson Reserve and the Tamaki River.
Pollutant
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How do they get into the stormwater?
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What do you see in Tamaki? Johnson Reserve, Tamaki River
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Rubbish such as drink can and plastic bottles/bags
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If it is small enough the rain can wash it in or people shove it into stormwater drains.
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Sometimes plastic / glass bottles
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Paint
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If the paint is still runny the rain can wash it into the drain.
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Have never seen paint in river.
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Food Waste
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When people drop it in or leave it on the ground, and either the wind could blow the food into the drains or rain could wash it in.
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Yes I have seen food waste in river.
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Animal Faeces
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When left out it can wash into drain.
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Have never seen animal faeces in river.
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Soil
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If dug can drop into drains.
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Have never seen soil in river.
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Lawn Clippings, garden rubbish, rotting plants
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If cut or loose rain can take it into drains.
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Have never seen any of these in river.
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Herbicides, pesticides, garden fertiliser
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If too much used some could still be there and when it rains it can mix and go into drains.
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Have never seen or hear anything about these products.
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Grease and Oil
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If drips rain will mix with it and wash into drains.
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Yes I have seen oil in river.
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Chemicals
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If chemicals
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Air Pollution
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If the air is polluted it can go into drains and into the oceans water.
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No I have not seen any air pollution in river.
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Heavy Metals
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Some metals could be dropped into drains.
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No I have never seen any metals in river.
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Soapy Water
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If washing vehicle or house, since most driveways go downhill the soapy water travels down the driveway and into the drains.
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Have never seen soapy water in river.
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Paper
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If left out or thrown out water will wash it into drains.
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No I have never seen paper in the Tamaki river.
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Bits of Rubbish
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If someone throws rubbish on ground or it falls the rain will wash it into drains.
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Sometimes have seen rubbish in river.
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