Definition of water pollution by different authors
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Water
Water Framework Directive
Defining Water Pollution
Links
Monitoring Water Quality
Other Water Related Legislation
Reports on Water Quality Monitoring
Water Catchment Management Plan
Waters in Maltese Islands
Marine Strategy Framework Directive
MSFD Initial Assessment, Good Environmental Status and Environmental Targets
Defining Water Pollution
Defining Water Pollution
Pollution is defined by the Environment Protection Act 1 of 2016 as "the direct or indirect introduction by man, or due to natural processes, into the environment of substances, energy, organisms or genetic material that cause or are likely to cause hazard to human health, or harm to living resources or to the environment ".
If we consider the local scenario, the sources of water pollution are numerous, and their effects vary depending on the severity of the pollution source and its location. Following is a list of pollutants of relevance to the local environment and a short description of their effects:
Activity
Resulting Pollutants
Potential Impacts
Agriculture
Nutrients
Pesticides
Suspended matter
• Decrease in light and oxygen availability to aquatic life.
• Nutrient enrichment and eutrophication.
• Increased stress to aquatic life.
Sewage discharge
Biological Oxygen Demand
Nutrients
Organics
Bacteria and viruses
Turbidity
Heavy metals
Pesticides
Other synthetic chemicals
• Decrease in light and oxygen availability.
• Nutrient enrichment and eutrophication.
• Alteration of habitats and communities.
• Increased stress to aquatic life.
Discharges from industry
Heavy metals
Organics
Synthetic chemicals
Thermal pollution
• Increased stress to aquatic life.
• Possible increased mortality in aquatic organisms.
Aquaculture
Nutrients
Suspended matter
Organics
• Nutrient enrichment.
• Reduced oxygen levels.
• Accumulation of particulate wastes.
• Alteration of habitats.
Oil and fuel terminals
Petroleum Hydrocarbons
• Increased stress to aquatic life.
Shipping, including bunkering and harbour dredging
Anti-fouling chemicals
Petroleum Hydrocarbons
Suspended matter
Heavy metals
• Alteration of habitats.
• Decrease in light and oxygen availability
A comprehensive description of relevant pressures and impacts on Maltese surface waters can be found in Chapter 3 of the 2nd WCMP.
Water Framework Directive
Defining Water Pollution
Links
Monitoring Water Quality
Other Water Related Legislation
Reports on Water Quality Monitoring
Water Catchment Management Plan
Waters in Maltese Islands
Marine Strategy Framework Directive
MSFD Initial Assessment, Good Environmental Status and Environmental Targets
Defining Water Pollution
Defining Water Pollution
Pollution is defined by the Environment Protection Act 1 of 2016 as "the direct or indirect introduction by man, or due to natural processes, into the environment of substances, energy, organisms or genetic material that cause or are likely to cause hazard to human health, or harm to living resources or to the environment ".
If we consider the local scenario, the sources of water pollution are numerous, and their effects vary depending on the severity of the pollution source and its location. Following is a list of pollutants of relevance to the local environment and a short description of their effects:
Activity
Resulting Pollutants
Potential Impacts
Agriculture
Nutrients
Pesticides
Suspended matter
• Decrease in light and oxygen availability to aquatic life.
• Nutrient enrichment and eutrophication.
• Increased stress to aquatic life.
Sewage discharge
Biological Oxygen Demand
Nutrients
Organics
Bacteria and viruses
Turbidity
Heavy metals
Pesticides
Other synthetic chemicals
• Decrease in light and oxygen availability.
• Nutrient enrichment and eutrophication.
• Alteration of habitats and communities.
• Increased stress to aquatic life.
Discharges from industry
Heavy metals
Organics
Synthetic chemicals
Thermal pollution
• Increased stress to aquatic life.
• Possible increased mortality in aquatic organisms.
Aquaculture
Nutrients
Suspended matter
Organics
• Nutrient enrichment.
• Reduced oxygen levels.
• Accumulation of particulate wastes.
• Alteration of habitats.
Oil and fuel terminals
Petroleum Hydrocarbons
• Increased stress to aquatic life.
Shipping, including bunkering and harbour dredging
Anti-fouling chemicals
Petroleum Hydrocarbons
Suspended matter
Heavy metals
• Alteration of habitats.
• Decrease in light and oxygen availability
A comprehensive description of relevant pressures and impacts on Maltese surface waters can be found in Chapter 3 of the 2nd WCMP.
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