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Water pollution - Coggle Diagram
Water pollution
Sources
-
Agriculture
- soil erosion
- chemical fertilizers
- pesticides
- manure (навоз)
-
Cities/Towns
- dump their urban wastes
- in downstream regions of
the river basin contribute wastes that flow into estuaries
Definition
- dumping harmful substances into water bodies
- release of energy in the form of radioactivity or heat
Nutrient pollution
pollutants enter upstream waters (creeks, streams) - flow into larger water bodies (lakes, rivers, bays) - coastal areas (create dead zones)
pollutants can soak into groundwater
sources:
fertilizers, yard and pet waste, soaps and detergents
Origin
water can absorb, break down, or recycle introduced materials.
Under normal circumstances:
substances are widely dispersed
little or no effect on life
Under abnormal circumstances:
substances become pollutants
(capacity to dissolve, disperse, or recycle is exceeded)
Groundwater
water seep unseen into porous rocks beneath the soil and remain there for decadesHow become polluted:
- agricultural fertilizer
- solvents used in engineering
Drinking water
Tap water:
rivers
reservoirs
groundwater
a mixture from different sources
contaminants in rivers and groundwater are
found in drinking water
we do not understand the long-term health effects of some of them
-
-
Stormwater
precipitation falls on roofs, roads, etc - carries pollution into local waterways
Effects
Drinking water affected my algal bloom:
rashes
stomach, liver illnesses
respiratory problems
neurological effects
Drinking water contaminated with nitrates:
shortness of breath
blue-tinted skin (blue-baby syndrome)
death