Water pollution
Videos
Water pollution is the contamination of water bodies, which has a negative impact on how they can be used. It is usually caused by human activities. Water bodies include lakes, rivers, oceans, aquifer
Garbage floating in water, Circular Quay, Sydney, Australia
Poster to teach people in South Asia about human activities leading to the pollution of water sources
Bauxite residue is an industrial waste that is dangerously alkaline and can lead to water pollution if not managed appropriately (photo from Stade, Germany).
Muddy river polluted by sediment
Water quality
Videos
Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which
Regional and national contamination of drinking water by chemical type and population size at risk of exposure
Sign in Sandymount, Ireland, describing water quality, giving levels of faecal coliform E. coli and Enterococcus faecalis
Urban runoff discharging to coastal waters
An automated sampling station installed along the East Branch Milwaukee River, New Fane, Wisconsin. The cover of the 24-bottle autosampler (center) is partially raised, showing the sample bottles inside. The autosampler collects samples at time intervals, or proportionate to flow over a specified period. The data logger (white cabinet) records temperature, specific conductance, and dissolved oxygen levels.