PUBH 6011 ACTUAL EXAMS SCRIPT QUESTIONS
AND ANSWERS SET A+
✔✔7.10 Explain the difference in risk assessment logic for carcinogens and non-
carcinogens - ✔✔Noncancer dose response
-dose-response evaluation
-POD
Cancer dose response
-stochastic events
-CSF
✔✔8.1 Familiarize with the philosophy of the UN Sustainable Development Goals
(SDGs). - ✔✔-2030 Agenda for Sustainable Development, adopted by all United
Nations Member States in 2015, provides a blueprint for peace and prosperity for
people and the planet, now into the future
-Consist of 17 interrelated goals to end poverty, protect the planet, and ensure that all
people enjoy peace and prosperity
-World met MDG for improved drinking water, but not sanitation
✔✔8.2 Explain the difference in drinking water quality between ground and surface
water sources. - ✔✔Ground water
-supply of freshwater found beneath Earth's surface
-high quality resource
-limited
-wellhead protection areas
Surface water
-includes all water naturally open to the atmosphere
-less favored as sources for drinking water
, ✔✔8.3 Describe the major features of the Clean Water Act (e.g., NPDES) and the Safe
Drinking Water Act (e.g., MCLs, MCLGs) - ✔✔CWA
-set maximum permissable amounts of water pollutants that can be discharged into
waterways
-NPDES: was created by CWA, sets water quality standards for surface water by
governing what you can put it
SDWA
-set maximum contaminant levels for pollutants in drinking water that may have adverse
effects on human health
-MCLGs (max contaminant level goal, nonenforceable)
-MCLs (max contaminant levels, enforceable)
✔✔8.4 Explain the difference between a primary and secondary drinking water
standards. - ✔✔Primary: legally enforceable standards (MCLs)
Secondary: unenforceable standards (MCLGs)
✔✔8.5 Explain typical water treatment processes in developed countries including
disinfection by-products - ✔✔1. screen
2. flocculation/coagulation
3. sedimentation
4. filtration
5. disinfection
6. storage
7. dsitribution
✔✔8.6 Explain water availability and treatment challenges in developing countries -
✔✔Water availability
-proportion of population using an improved drinking water has improved but disparities
exist especially in rural and urban areas
Treatment challenges
-chlorination
-ceramic biosand filters
-SODIS
-boiling
✔✔8.7 Describe the difference between point source and non-point sources of water
pollution - ✔✔Point source
-stationary location or fixed facility from which pollutants are discharged, such as a pipe,
ditch or ship
Nonpoint source
-diffuse pollution sources without a single point of origin
-ex. agriculture runoff, city streets, parking lots
AND ANSWERS SET A+
✔✔7.10 Explain the difference in risk assessment logic for carcinogens and non-
carcinogens - ✔✔Noncancer dose response
-dose-response evaluation
-POD
Cancer dose response
-stochastic events
-CSF
✔✔8.1 Familiarize with the philosophy of the UN Sustainable Development Goals
(SDGs). - ✔✔-2030 Agenda for Sustainable Development, adopted by all United
Nations Member States in 2015, provides a blueprint for peace and prosperity for
people and the planet, now into the future
-Consist of 17 interrelated goals to end poverty, protect the planet, and ensure that all
people enjoy peace and prosperity
-World met MDG for improved drinking water, but not sanitation
✔✔8.2 Explain the difference in drinking water quality between ground and surface
water sources. - ✔✔Ground water
-supply of freshwater found beneath Earth's surface
-high quality resource
-limited
-wellhead protection areas
Surface water
-includes all water naturally open to the atmosphere
-less favored as sources for drinking water
, ✔✔8.3 Describe the major features of the Clean Water Act (e.g., NPDES) and the Safe
Drinking Water Act (e.g., MCLs, MCLGs) - ✔✔CWA
-set maximum permissable amounts of water pollutants that can be discharged into
waterways
-NPDES: was created by CWA, sets water quality standards for surface water by
governing what you can put it
SDWA
-set maximum contaminant levels for pollutants in drinking water that may have adverse
effects on human health
-MCLGs (max contaminant level goal, nonenforceable)
-MCLs (max contaminant levels, enforceable)
✔✔8.4 Explain the difference between a primary and secondary drinking water
standards. - ✔✔Primary: legally enforceable standards (MCLs)
Secondary: unenforceable standards (MCLGs)
✔✔8.5 Explain typical water treatment processes in developed countries including
disinfection by-products - ✔✔1. screen
2. flocculation/coagulation
3. sedimentation
4. filtration
5. disinfection
6. storage
7. dsitribution
✔✔8.6 Explain water availability and treatment challenges in developing countries -
✔✔Water availability
-proportion of population using an improved drinking water has improved but disparities
exist especially in rural and urban areas
Treatment challenges
-chlorination
-ceramic biosand filters
-SODIS
-boiling
✔✔8.7 Describe the difference between point source and non-point sources of water
pollution - ✔✔Point source
-stationary location or fixed facility from which pollutants are discharged, such as a pipe,
ditch or ship
Nonpoint source
-diffuse pollution sources without a single point of origin
-ex. agriculture runoff, city streets, parking lots
