water testing by pearl, marlee, and riahna mckenny elementary march 21,2012

Water Testing

By Pearl, Marlee, and RiahnaMcKenny Elementary

March 21,2012

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

D.O. results

• D.O. result much better in October than February

• Optimal Standard = >9 mg/l

Temperature

• Better October than February

• Optimal levels for hatching salmon = <48 degrees F

• Or 9 degrees C

B.O.D. results

• Both results bad

• Optimal standards = >6mg/l

Fecal Coliform

• February’s results = much better

• Optimal standards = <50 colonies/100ml

pH

• Both good for February and October

• Optimal standards = 7-8

Turbidity

• October’s result = much better than February’s

• Optimal standards = <20 JTU’s

Nitrates (as nitrogen)

• October’s result = much better than February’s

• Optimal standers = <1 mg/l

Total solids

• October’s result = much better than February’s result

• Optimal standards = <25 mg/l

Questions?