CWEA - ADVANCED WATER TREATMENT TEST QUESTIONS
WITH ACCURATE SOLUTIONS
What are the 3 water quality requirements? -- Answer ✔✔ 1. Nutrients
2. Aesthetics
3. Risk to human health, such as pathogen removal
What are our primary sources of water? -- Answer ✔✔ Surface Water and Ground
Water.
How many days does IPR treated wastewater effluent need to be in Reservoir or Basin
before entering Water Treatment Facility? -- Answer ✔✔ 30 days
What does Log Removal Values measure? -- Answer ✔✔ The effectiveness of the
treatment processes. The are determined by taking the log of pathogen concentration in
the influent and effluent after treatment.
During Indirect Potable reuse, how long must water stay in a natural body of water
before being used for drinking water? -- Answer ✔✔ 30 days.
, Who dictates wastewater reuse? -- Answer ✔✔ The State sets their regulations. EPA is
not involved.
Who regulates the drinking water? -- Answer ✔✔ Safe Drinking Water Act.
What are the California Reuse Regulations? -- Answer ✔✔ A 12-10-10 log removal for
Viruses, Cryptosporidium and Giardia.
What can we use to disinfect water? -- Answer ✔✔ Chlorine, ozone, and UV.
Benefits of Advanced Oxidation Process? -- Answer ✔✔ Removed Total Organic
Carbons and creates a barrier for microorganisms.
How much Total Organic Carbon (TOC) and Conductivity can Reverse Osmosis
remove? -- Answer ✔✔ < 0.5mg/l TOC and 250mg/l conductivity.
MF, RO, UV/H2O2 is an example of what? -- Answer ✔✔ MULTIPLE BARRIER TO
PATHOGENS
What are Critical Control Points (CCP)? -- Answer ✔✔ They are unit processes that
require policies, procedures, practices, monitor and measuring to assure quality
requirements are met.
What are the 2 main functions of MULTIPLE BARRIER? -- Answer ✔✔ 1. robustness-
expanding variety of contaminant removal process in the train.
2. Reliability- proving degree that process can remove contaminant
WITH ACCURATE SOLUTIONS
What are the 3 water quality requirements? -- Answer ✔✔ 1. Nutrients
2. Aesthetics
3. Risk to human health, such as pathogen removal
What are our primary sources of water? -- Answer ✔✔ Surface Water and Ground
Water.
How many days does IPR treated wastewater effluent need to be in Reservoir or Basin
before entering Water Treatment Facility? -- Answer ✔✔ 30 days
What does Log Removal Values measure? -- Answer ✔✔ The effectiveness of the
treatment processes. The are determined by taking the log of pathogen concentration in
the influent and effluent after treatment.
During Indirect Potable reuse, how long must water stay in a natural body of water
before being used for drinking water? -- Answer ✔✔ 30 days.
, Who dictates wastewater reuse? -- Answer ✔✔ The State sets their regulations. EPA is
not involved.
Who regulates the drinking water? -- Answer ✔✔ Safe Drinking Water Act.
What are the California Reuse Regulations? -- Answer ✔✔ A 12-10-10 log removal for
Viruses, Cryptosporidium and Giardia.
What can we use to disinfect water? -- Answer ✔✔ Chlorine, ozone, and UV.
Benefits of Advanced Oxidation Process? -- Answer ✔✔ Removed Total Organic
Carbons and creates a barrier for microorganisms.
How much Total Organic Carbon (TOC) and Conductivity can Reverse Osmosis
remove? -- Answer ✔✔ < 0.5mg/l TOC and 250mg/l conductivity.
MF, RO, UV/H2O2 is an example of what? -- Answer ✔✔ MULTIPLE BARRIER TO
PATHOGENS
What are Critical Control Points (CCP)? -- Answer ✔✔ They are unit processes that
require policies, procedures, practices, monitor and measuring to assure quality
requirements are met.
What are the 2 main functions of MULTIPLE BARRIER? -- Answer ✔✔ 1. robustness-
expanding variety of contaminant removal process in the train.
2. Reliability- proving degree that process can remove contaminant
