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.
How do they get into the stormwater?
What do you see in Tamaki? Johnson Reserve, Tamaki River
Rubbish such as drink can and plastic bottles/bags
If it is small enough the rain can wash it in or people shove it into stormwater drains.
Sometimes plastic / glass bottles
If the paint is still runny the rain can wash it into the drain.
Have never seen paint in river.
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.
Yes I have seen food waste in river.
When left out it can wash into drain.
Have never seen animal faeces in river.
If dug can drop into drains.
Have never seen soil in river.
Lawn Clippings, garden rubbish, rotting plants
If cut or loose rain can take it into drains.
Have never seen any of these in river.
Herbicides, pesticides, garden fertiliser
If too much used some could still be there and when it rains it can mix and go into drains.
Have never seen or hear anything about these products.
Grease and Oil
If drips rain will mix with it and wash into drains.
Yes I have seen oil in river.
If the air is polluted it can go into drains and into the oceans water.
No I have not seen any air pollution in river.
Some metals could be dropped into drains.
No I have never seen any metals in river.
If washing vehicle or house, since most driveways go downhill the soapy water travels down the driveway and into the drains.
Have never seen soapy water in river.
If left out or thrown out water will wash it into drains.
No I have never seen paper in the Tamaki river.
Bits of Rubbish
If someone throws rubbish on ground or it falls the rain will wash it into drains.
Sometimes have seen rubbish in river.