Natural water quality varies significantly.

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Presentation transcript:

Natural water quality varies significantly. Image: B. Molnia Water-3-1

Water quality can be degraded by community and industrial waste discharge. Images: Bruce Molnia, D. Mueller Water-3-1

Water quality can be degraded by runoff containing fertilizer and pesticide chemicals from fields. Images: USDA, NRCS Water-3-2

Water quality can be degraded by erosion and sediment dispersal in streams. Images: NRCS, D. Mueller Water-3-4

Water quality can be degraded by bacteria from animal and people waste. Images: NRCS, USGS Water-3-5

Water can be degraded by inappropriate solid waste disposal as at this old metal mine. Image: Travis Hudson Water-3-6

Water quality can be degraded by accidents such as oil spills. Images of Exxon Valdez Oil Spill: NPS, NOAA Water-3-7

Water quality needs to be protected. Images: USDA, NRCS Water-3-8

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