Water Quality

Student Resources

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Syllabus links:

Marine and Aquaculture Technology 7-10

Leisure - Module 31 Managing Water Quality

The importance of water quality
Students:

• describe the differences between sea water, brackish water and freshwater
• identify the causes of change in temperature, pH, total dissolved solids, ammonia, phosphorus, nitrates and nitrites in water
• outline how changes in water quality affect aquatic animals and plants
• compare and contrast the water quality requirements of various organisms, for example:

– marine and freshwater organisms
– animals and plants

• identify the local catchment/storage area for domestic water supply

Testing water quality
Students:

• locate suitable water sample sites for the collection of water for analysis in your local area
• conduct local water sample tests, for example:

– temperature and pH
– total dissolved solids
– ammonia
– total phosphorus, nitrates and nitrites

• construct a Secchi Disc and conduct a turbidity study​