pH - a measure of acidity, can impact how much metal ion gets dissolved in water if pH gets too acidic (ex: Flint Michigan water crisis) , too acidic or too basic = BAD!, Nitrates - natural presence in water, but can increase with fertilizer in runoff, septic tank or sewage pollution, and erosion of land, Phosphates - natural presence in water, but can increase with human waste, laundry detergent contamination, industrial waste, Dissolved oxygen - aka DO, must have a certain level for organisms to survive, there is seasonable change in DO levels due to temperature differences, can disrupt food chains if undesirable conditions; ex: increased temperature of water can decrease DO→ can cause dead zones and animals cannot survive!, Turbidity - cloudiness caused by suspended particles, if too high can increase temperature, cause decrease in photosynthesis and DO levels, and organisms like filter feeders can be disturbed., Temperature - temperature can impact almost all other characteristics, so important that not too hot! Specifically, lower temperatures usually means more dissolved oxygen (GOOD!); high temperatures means less dissolved oxygen (BAD!), Macroinvertebrates - A high biodiversity of macroinvertebrates correlates with a healthy stream/water quality,

Water Quality Indicators

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