1. How do you know water is healthy?

2. Water Quality Standards
Rules set by the Environmental Protection Agency (EPA)
Clean Water Act of 1972 – set laws into place

3. Temperature
Water warmer than 35°C (95°F) is bad for wildlife. Colder = Better

4. Turbidity Water should be clear
Higher turbidity means too much runoff or algae
Under 25 for Salt
Under 50 for Fresh

5. Dissolved Oxygen Oxygen is needed to survive underwater
Less than 5 ppm is dangerous

6. pH
pH should stay between 5 and 9

7. Other Nutrients Nitrates – No more than 1 ppm
Phosphates – No more than ppm