Pollution testing activity sheet

(From Wiltshire Wildlife Trust pack)

These like clean water.
If you can find these the pond is not polluted.

Stonefly nymph Mayfly nymph Flatworms Mussels

These like quite clean water.
If you can find these, the water is quite clean.

Caddis fly larva Freshwater shrimp

These can stand a little bit of pollution.
If you can find these and not the ones above, the water is a bit polluted.

Water louse Bloodworm Leech Great pond snail Water boatman

Thes can live in dirty water.
If you can find ONLY these, the water is badly polluted.

Rat-tailed maggot Sludge worm Mosquito larva

How clean do you think the water is?

Pond Pack Introduction Why study ponds? Pond-dipping Safety for teachers Safety for kids Animal variety Moving and breathing Cycles of life Webs of life Plant life Maths English Geography History Art and design Make a pond Plant identification Animal identification Activity sheets Bug dial Where to go Acknowledgements EDUCATION NATURE SEARCH . . . . . . . . .