water testing by pearl, marlee, and riahna mckenny elementary march 21,2012
TRANSCRIPT
![Page 1: Water Testing By Pearl, Marlee, and Riahna McKenny Elementary March 21,2012](https://reader035.vdocument.in/reader035/viewer/2022081603/56649e9f5503460f94ba1406/html5/thumbnails/1.jpg)
Water Testing
By Pearl, Marlee, and RiahnaMcKenny Elementary
March 21,2012
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What is water testing?• Water testing is about the 7
tests we do
• Dissolved oxygen, temperature, pH, fecal coliform, turbidity, and nitrates
• Test D.O. to see if oxygen in water
• Test temperature to see how hot or cold water is
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D.O. results
• D.O. result much better in October than February
• Optimal Standard = >9 mg/l
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Temperature
• Better October than February
• Optimal levels for hatching salmon = <48 degrees F
• Or 9 degrees C
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B.O.D. results
• Both results bad
• Optimal standards = >6mg/l
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Fecal Coliform
• February’s results = much better
• Optimal standards = <50 colonies/100ml
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pH
• Both good for February and October
• Optimal standards = 7-8
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Turbidity
• October’s result = much better than February’s
• Optimal standards = <20 JTU’s
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Nitrates (as nitrogen)
• October’s result = much better than February’s
• Optimal standers = <1 mg/l
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Total solids
• October’s result = much better than February’s result
• Optimal standards = <25 mg/l
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Questions?