L8 - Water Quality and Control Flashcards
Give 6 reasons why water is important
- Industrial Processes
- Ecosystems and Ecology
- Quantity AND Quality
- Human Consumption
- Waste Disposal
- Cross-Boundary Issues
What are the 5 main pollutant characteristics?
- pH
- BOD
- Obstacles to O2
- Suspended Solids
- Temperature Changes
Give 9 common pollutants
- Oil
- Metal Salts
- Pesticides
- Organic Matter
- PCBs
- Litter
- EC Priority Substances
- Fertilisers
- Detergents
What are the 4 main types of release to water?
- Non-Point Source
- Point Source
- Leak
- Spillage
Since when has water pollution been a matter for the Scottish Parliament?
1998
Under which Act does WG have responsibilities for water?
Government of Wales Act 2006
Who is the member state for EU negotiation?
UK
What is an effluent?
Any fluid discharged from a source into the environment and allowed to enter the drainage system or allowed leak onto the land and soak into the ground
What is surface water?
Releases, spills or leaks into the ground or into surface water drains
Environmental permits are required for what distances offshore?
3nm in E & W
6nm in Scotland
What does the EA have a duty to do with regards to surface waters?
To maintain and improve the quality of surface waters
What is groundwater?
Where spills, onto the ground or long term leaks of materials into the ground, which migrate down or horizontally into groundwater – it will hit the water table and plume
For surface drains, when is a permit required?
For anything other than rainwater
What is a foul sewer?
Domestic and trade effluent to sewage treatment works via foul sewers
What influences water quality?
Geology, rainfall, season, pollutants (type and amount)