CWEA Test with Correct Answers
Indirect Potable Reuse (IPR) - ✅✅ The blending of advanced treated, recycled
or reclaimed water into a natural water source (environmental barrier) that could be
used for drinking (potable) water after further treatment.
Direct Potable Reuse (DPR) - ✅✅ Process of treating wastewater to drinkable
standards and returning it to the raw water supply (distribution system) without the
use of an environmental buffer. Rather than mixing the treated water into an
aquifer or reservoir
What has led to the research of Advanced Water Treatment? - ✅✅ Strict effluent
discharge limits are pushing the development of treatment technologies.
Most wastewater reuse is? - ✅✅ Unplanned and indirect reuse (IPR)
What is fit for purpose? - ✅✅ It is reclaimed wastewater that is treated to
specific criteria and is reused for purposes according to its treatment.
What are the AWT processes? - ✅✅ 1. Microfiltration / Ultrafiltration
2. Reverse Osmosis / Nanofiltration
3. Advanced Oxidation (AOP)
4. Biological Aerated Filtration
5. Stabilization
6. Disinfection
, What is the Stabilization Process? - ✅✅ Adding nutrients to the treated water so
that it won’t pull from pipes and etc.
How many days does IPR treated wastewater effluent need to be in Reservoir or
Basin before entering water treatment facility? - ✅✅ 30 days
What does Log Removal Values measure? - ✅✅ The effectiveness of the
treatment processes. They are determined by taking the log of pathogen
concentration in the influent and effluent after treatment.
What are the 3 water quality requirements? - ✅✅ 1. Nutrients
2. Aesthetics
3. Risk to human health, such as pathogen removal
What are our primary sources of water? - ✅✅ Surface Water and Ground Water.
During indirect potable reuse, how long must water stay in a natural body of water
before being used for drinking water? - ✅✅ 30 days.
Who dictates wastewater reuse? - ✅✅ The State sets their regulations. EPA is
not involved.
Who regulates the drinking water? - ✅✅ Safe Drinking Water Act.
What are the California Reuse Regulations? - ✅✅ A 12-10-10 log removal for
Viruses, Cryptosporidium and Giardia.
Indirect Potable Reuse (IPR) - ✅✅ The blending of advanced treated, recycled
or reclaimed water into a natural water source (environmental barrier) that could be
used for drinking (potable) water after further treatment.
Direct Potable Reuse (DPR) - ✅✅ Process of treating wastewater to drinkable
standards and returning it to the raw water supply (distribution system) without the
use of an environmental buffer. Rather than mixing the treated water into an
aquifer or reservoir
What has led to the research of Advanced Water Treatment? - ✅✅ Strict effluent
discharge limits are pushing the development of treatment technologies.
Most wastewater reuse is? - ✅✅ Unplanned and indirect reuse (IPR)
What is fit for purpose? - ✅✅ It is reclaimed wastewater that is treated to
specific criteria and is reused for purposes according to its treatment.
What are the AWT processes? - ✅✅ 1. Microfiltration / Ultrafiltration
2. Reverse Osmosis / Nanofiltration
3. Advanced Oxidation (AOP)
4. Biological Aerated Filtration
5. Stabilization
6. Disinfection
, What is the Stabilization Process? - ✅✅ Adding nutrients to the treated water so
that it won’t pull from pipes and etc.
How many days does IPR treated wastewater effluent need to be in Reservoir or
Basin before entering water treatment facility? - ✅✅ 30 days
What does Log Removal Values measure? - ✅✅ The effectiveness of the
treatment processes. They are determined by taking the log of pathogen
concentration in the influent and effluent after treatment.
What are the 3 water quality requirements? - ✅✅ 1. Nutrients
2. Aesthetics
3. Risk to human health, such as pathogen removal
What are our primary sources of water? - ✅✅ Surface Water and Ground Water.
During indirect potable reuse, how long must water stay in a natural body of water
before being used for drinking water? - ✅✅ 30 days.
Who dictates wastewater reuse? - ✅✅ The State sets their regulations. EPA is
not involved.
Who regulates the drinking water? - ✅✅ Safe Drinking Water Act.
What are the California Reuse Regulations? - ✅✅ A 12-10-10 log removal for
Viruses, Cryptosporidium and Giardia.
