Water pollution

water pollution

pollution type

Subclass of	environmental pollution
Has cause	water pollutant
Has effect	Waterborne diseases
Main regulatory text	Strafgesetzbuch
Relates to sustainable development goal, target or indicator	Target 3.9 of the Sustainable Development Goals
Handled, mitigated, or managed by	water treatment

Garbage dey float for water insyde, Circular Quay, Sydney, Australia

Water pollution (anaa aquatic pollution) be wen dirty things enter water, plus e dey spoil how we fit use de water well-well. Na human doings dey cause am. Water bodies de include lakes, rivers, oceans, aquifers, reservoirs plus groundwater. Water pollution dey happen when dirty things mix with water. These dirty things fit come from four main ways: sewage, factory works, farm activities, plus all de dirt wey dey wash go insyde water for town. Water pollution may affect either surface water or groundwater. This form of pollution fit lead to many problems. One bi de degradation of aquatic ecosystems. Another one be say e dey spread water-borne sickness when people dey use dirty water drink or irrigation. Water pollution dey spoil all de good things wey water dey give us, like de clean water wey we dey drink.

Sources of water pollution either be point sources anaa non-point sources. Point sources get one identifiable cause, such as a storm drain, a wastewater treatment plant, anaa an oil spill. Non-point sources be more diffuse. An example be agricultural runoff. Pollution be de result of de cumulative effect over time. Pollution fi take chaw forms. One go be toxic substances such as oil, metals, plastics, pesticides, persistent organic pollutants, den industrial waste products. Anoda be stressful conditions such as changes of pH, hypoxia anaa anoxia, increased temperatures, excessive turbidity, canaahanges of salinity). De introduction of pathogenic organisms be anoda. Contaminants fi include organic den inorganic substances. A common cause of thermal pollution be de use of water as a coolant by power plants den industrial manufacturers.

De control of water pollution dey require appropriate infrastructure den management plans, as well as legislation. Technology solutions fi include improving sanitation, sewage treatment, industrial wastewater treatment, agricultural wastewater treatment, erosion control, sediment control den control of urban runoff (wey dey include stormwater management).

Poster to teach people in South Asia about human activities leading to the pollution of water sources

Pollutants den dema effects*

Pollutant	Main representative parameter	Possible effect of de pollutant
Suspended solids	Total suspended solids	Aesthetic problems Sludge deposits Pollutants adsorption Protection of pathogens
Biodegradable organic matter	Biological oxygen demand (BOD)	Oxygen consumption Death of fish Septic conditions
Nutrients	Nitrogen Phosphorus	Excessive algae growth Toxicity to fish (ammonia) Illnesses in new-born infants (blue baby syndrome from nitrate) Pollution of groundwater
Pathogens	Coliforms, such as E. coli, no fi be pathogenic insyd den of themselves, buh dem be used as an indicator of co-occurring pathogens wey dey die anaa degrade more quickly Helminth eggs	Waterborne diseases
Non-biodegradable organic matter	Pesticides Some detergents Odas	Toxicity (various) Foam (detergents) Reduction of oxygen transfer (detergents) Non-biodegradability Bad odors (e.g.: phenols)
Inorganic dissolved solids	Total dissolved solids Conductivity	Excessive salinity – harm to plantations (irrigation) Toxicity to plants (some ions) Problems plus soil permeability (sodium)
* Sources of dese pollutants be household den industrial wastewater, urban runoff den stormwater drainage from agricultural areas

External links

• Tackling global water pollution – UN Environment Programme