Podcast
Questions and Answers
What does the WHO definition of sanitation involve?
What does the WHO definition of sanitation involve?
What is the main idea behind the concept of environmental health?
What is the main idea behind the concept of environmental health?
What is the traditional association people have with sanitation?
What is the traditional association people have with sanitation?
According to the WHO, what does sanitation encompass?
According to the WHO, what does sanitation encompass?
Signup and view all the answers
What is the dictionary meaning of the word sanitation?
What is the dictionary meaning of the word sanitation?
Signup and view all the answers
What is the broader meaning of sanitation?
What is the broader meaning of sanitation?
Signup and view all the answers
What type of pollutants include fertilizers and pesticides?
What type of pollutants include fertilizers and pesticides?
Signup and view all the answers
What is the primary indicator of chemical contamination in water?
What is the primary indicator of chemical contamination in water?
Signup and view all the answers
What is measured by filtering a known volume of water through a fine filter?
What is measured by filtering a known volume of water through a fine filter?
Signup and view all the answers
What type of pollution is characterized by high temperatures?
What type of pollution is characterized by high temperatures?
Signup and view all the answers
What is the primary role of Dissolved Oxygen in water bodies?
What is the primary role of Dissolved Oxygen in water bodies?
Signup and view all the answers
What is high BOD indicative of in water bodies?
What is high BOD indicative of in water bodies?
Signup and view all the answers
What is the replacement term for 'environmental sanitation'?
What is the replacement term for 'environmental sanitation'?
Signup and view all the answers
What type of pollutants include clay, silt, and sand?
What type of pollutants include clay, silt, and sand?
Signup and view all the answers
What is essential for achieving a healthy environment?
What is essential for achieving a healthy environment?
Signup and view all the answers
What is measured by evaporating a known volume of water?
What is measured by evaporating a known volume of water?
Signup and view all the answers
What is a key ingredient for a healthy life?
What is a key ingredient for a healthy life?
Signup and view all the answers
What is impacted by a healthy environment?
What is impacted by a healthy environment?
Signup and view all the answers
What is a consequence of polluted air?
What is a consequence of polluted air?
Signup and view all the answers
What is a benefit of a healthy environment on the economy?
What is a benefit of a healthy environment on the economy?
Signup and view all the answers
What is a global impact of environmental health issues?
What is a global impact of environmental health issues?
Signup and view all the answers
What is supported by a healthy environment?
What is supported by a healthy environment?
Signup and view all the answers
What is a characteristic of surface water?
What is a characteristic of surface water?
Signup and view all the answers
What is a limitation of sea water?
What is a limitation of sea water?
Signup and view all the answers
What is an advantage of ground water?
What is an advantage of ground water?
Signup and view all the answers
What is a characteristic of impounding reservoirs?
What is a characteristic of impounding reservoirs?
Signup and view all the answers
What is a challenge of tanks as a source of water?
What is a challenge of tanks as a source of water?
Signup and view all the answers
What is a limitation of rivers as a source of water?
What is a limitation of rivers as a source of water?
Signup and view all the answers
What is the primary consideration for selecting a source of surface water?
What is the primary consideration for selecting a source of surface water?
Signup and view all the answers
What is a characteristic of surface water during rainy season?
What is a characteristic of surface water during rainy season?
Signup and view all the answers
What is the safe yield of a water source generally defined as?
What is the safe yield of a water source generally defined as?
Signup and view all the answers
What is a risk associated with surface water?
What is a risk associated with surface water?
Signup and view all the answers
What is the primary source of drinking water in Bhutan?
What is the primary source of drinking water in Bhutan?
Signup and view all the answers
What is the main reason for the increasing extraction of groundwater in Bhutan?
What is the main reason for the increasing extraction of groundwater in Bhutan?
Signup and view all the answers
What is the per capita water resource availability in Bhutan?
What is the per capita water resource availability in Bhutan?
Signup and view all the answers
What percentage of Bhutan's water resources is currently used?
What percentage of Bhutan's water resources is currently used?
Signup and view all the answers
What is the purpose of impounding reservoirs?
What is the purpose of impounding reservoirs?
Signup and view all the answers
What is the main challenge facing Bhutan's water supply?
What is the main challenge facing Bhutan's water supply?
Signup and view all the answers
Study Notes
Environmental Health
- Addresses all physical, chemical, and biological factors external to a person that can affect health and well-being.
- Encompasses the assessment, correction, control, and prevention of environmental factors that can impact health.
Environmental Sanitation
- Definition: "The control of those factors in man's physical environment which exercise or may exercise a deleterious effect on his physical development, health, and survival."
- Involves keeping the environment clean to prevent diseases and promote health.
- Now referred to as "environmental health" (Park).
Importance of Environmental Health
- A healthy environment is essential for a healthy life.
- Impacts human health, biodiversity, and ecosystem services.
- Affects mental health, social and economic productivity, and global interconnectedness.
Water Quality
- Surface water sources:
- Impounding reservoirs (artificial lakes)
- Rivers and streams
- Tanks, ponds, and lakes
- Ground water sources:
- Shallow wells
- Deep wells
- Springs
- Safe yield is the yield that is adequate for 95% of the year.
- Selection of a source requires professional advice from hydrogeologists, engineers, and environmental scientists.
Bhutan's Water Resources
- Rich in surface and ground water resources.
- Unable to meet safe drinking water needs, with 24-hour water supply not available in some areas.
- Prone to contamination from human and animal sources.
Surface Water Characteristics
- Turbid during rainy season, clarity not a guarantee of safety.
- Contains various dissolved and suspended impurities.
- Impurities: washings, sewage, industrial waste, and agricultural runoff.
- Requires purification before drinking.
Ground Water Advantages
- Likely free from pathogens, often requires no treatment, and is a reliable supply.
- Less susceptible to contamination compared to surface water.
Ground Water Impurities
- Suspended impurities: clay, silt, sand, and microscopic organisms.
- Agricultural pollutants: fertilizers and pesticides.
- Physical pollutants: heat (thermal pollution) and radioactive substances.
- Pollution indicators: biochemical oxygen demand (BOD), total suspended solids (TSS), total dissolved solids (TDS), and concentration of chlorides, nitrogen, and phosphorus.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz assesses knowledge of environmental health factors, including physical, chemical, and biological factors that impact health behaviors. It covers the assessment, correction, control, and prevention of these factors.
