1. Somebody call the doctor! An introduction to water health

2. Warm-up Write a homework reminder! Creek Trip is NEXT CLASS!
Update your Table of Contents for today!
What do you think are some indicators that determine if water is healthy or unhealthy?
Date
Session #
Activity
Page
5/12 & 5/13 4
Water Quality Indicator Note Guide 6
Water Diagnosis Chart 7

3. How do we know if our water is healthy?
There are PHYSICAL, CHEMICAL & BIOLOGICAL indicators that work together to determine the health of the water

4. Temperature Definition: How hot or cold the water is
Healthy: Correct temperature to support the organisms/environment
Unhealthy: Too high or too low for organisms/environment
Minimum = 32o
Maximum = 97o

5. Temperature Causes of Temperature Change: loss or gain of shade
heat pollution
seasonal/global changes
Effects of Temperature Change:
decreased levels of dissolved oxygen (DO)
increased bacteria levels
increased algae growth

6. turbidity
Definition: A measure of how cloudy water is due to “stuff” in it.
Healthy: Drinking water should be at or below 1 NTU; Salt water = below 25 NTU; fresh water = below 50 NTU
Unhealthy: Drinking water = above 5 NTU; Salt water = above 25 NTU; Freshwater = above 50 NTU

7. turbidity Causes of Turbidity Change: erosion run-off
disturbance of water
algae growth
Effects of Turbidity:
increased temperature
decrease in DO
clogs gills in organisms
blocks sunlight for photosynthesis

8. ph Definition: Measure of how acidic or basic the water is
Healthy: Correct level for
the type of water.
Freshwater: 6.0 8.0; Saltwater is
usually between 7.5 8.5
Unhealthy: Incorrect level for the
the type of water or to support life.

9. ph Causes of pH level change: acid rain or other chemicals
minerals washing into water
Effects of pH level change:
death to sensitive plants and animals

10. pH mini lab Levels: 06 is acidic 7 is neutral
814 is basic (alkaline)

11. pH mini lab
To demonstrate the idea of pH, you tested 4 things and recorded their pH level. What were the pH levels, and based on the reading, were they an acid, base or neutral?
Lemon Juice
Windex
Tap Water
Your Mouth
pH Value
Acid, Base or Neutral?

12. Dissolved Oxygen Definition: Oxygen gas dissolved in the water
Healthy: Right amount dissolved oxygen = lots of life; 4-5 ppm is optimal
Unhealthy: Low dissolved oxygen = little or no life

13. Dissolved Oxygen Causes of Change in DO Levels: increased temperature
decaying plant matter
Effects of Change of DO Levels:
less diversity of species
fish kills

14. Nutrients
Definition: Something that is usually good, but can become toxic when there is too much
Healthy: Correct amount of nitrates, phosphates,
sunlight, minerals like salt = lots of life
Unhealthy: Too many/not enough nutrients = little or no life
nitrates = above 1 ppm
phosphates = above .003 ppm

15. Nutrients Causes of Nutrient Level Changes: fertilizer run-off
animal waste run-off
Effects of Nutrient Level Changes:
EUTROPHICATION
low DO

16. EUTROPHICATION FLOW CHART Excess Nutrients  Algae Bloom (pond scum)  darkness below surface  photosynthesis stops decomposers & other organisms use up oxygen DEATH Of Organisms

17. Hardness
What are you testing for when you are testing the hardness of water?
Minerals, specifically…Calcium & Magnesium
“Hard” Water = contains Calcium & Magnesium
“Soft” Water = little or no Calcium & Magnesium

18. Bio-indicators
Definition: Macro-invertebrates that live in the water and are sensitive to pollution
Healthy: A lot of bio-indicators = healthy water
Unhealthy: Little or no bio-indicators = unhealthy water

19. Bio-indicators Causes of Change in Bio-Indicator Levels:
increased levels of pollution
Effects of Change in Bio-Indicator Levels:
damages food chain
loss of organisms

20. “Game changers” MERCURY
Natural element that is toxic – dumped in water from industries
Usually affects people through eating fish from mercury contaminated water
Causes kidney damage & brain/neurological disorders

21. “Game changers” COLIFORM BACTERIA
Bacteria commonly found in water, soil and vegetation
Some forms are harmless, but can indicate the presence of fecal matter or other harmful bacteria like E.Coli

22. You be the doctor! Use the notes you just took to:
Diagnose the possible cause of the water issues on the Water Quality Checklist
Decide if the water is healthy or unhealthy

23. Vocabulary Splash All of the vocabulary words will be on the slide.
Study the words for 30 seconds.
Next slide will be missing 1 of the words from the original slide.
Write down the word that is missing and its definition as quickly as possible.

24. Temperature Turbidity Bio-Indicators Nutrients pH Coliform Mercury
Hardness
Mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

25. Temperature Turbidity Nutrients pH Coliform Mercury Dissolved Oxygen
Hardness
Mercury
Nutrients pH
Turbidity
Temperature
Dissolved Oxygen
Coliform

26. Temperature Turbidity Bio-Indicators Nutrients pH Coliform mercury
Hardness
mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

27. Temperature Bio-Indicators Nutrients pH Coliform mercury
Hardness
mercury
Nutrients pH
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

28. Temperature Turbidity Bio-Indicators Nutrients pH Coliform mercury
Hardness
mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

29. Temperature Turbidity Bio-Indicators Nutrients pH Coliform
Hardness
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

30. Temperature Turbidity Bio-Indicators Nutrients pH Coliform mercury
Hardness
mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

31. Temperature Turbidity Bio-Indicators Nutrients Coliform mercury
Hardness
mercury
Nutrients
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

32. Temperature Turbidity Bio-Indicators Nutrients pH Coliform mercury
Hardness
mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

33. Temperature Turbidity Bio-Indicators Nutrients pH mercury
Hardness
mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen

34. Temperature Turbidity Bio-Indicators Nutrients pH Coliform mercury
Hardness
mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

35. Temperature Turbidity Bio-Indicators Nutrients pH Coliform mercury
Hardness
mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Coliform

36. Temperature Turbidity Bio-Indicators Nutrients pH Coliform mercury
Hardness
mercury
Nutrients pH
Turbidity
Temperature
Bio-Indicators
Dissolved Oxygen
Coliform

37. Temperature Turbidity Bio-Indicators Nutrients pH Coliform mercury
Dissolved Oxygen
Coliform

38. homework
Bring rain boots/shoes & clothes you can get dirty for class next…we are going to the creek!
EOG Review Booklet Due May 27th!