Class A Water Operator Exam Questions and Answers 100% Solved | Graded A+

Class A Water Operator Exam Questions

and Answers 100% Solved | Graded A+


How many Training Hours and experience for a class D Water Operator -

✔✔16 Hours Training and No Experience

How many Training Hours and experience for a class C Water Operator -

✔✔36 Hours Training and 1 year Experience

How many Training Hours and experience for a class B Water Operator -

✔✔100 Hours Training and 3 years Experience (must include 1 year of

hands on experience)

How many Training Hours and experience for a class A Water Operator -

✔✔200 Hours Training and 5 years Experience (must include 2 years of

hands on experience)

How many Training Hours and experience for a Class C Lab Operator -

✔✔32 Hours and no experience

How many Training Hours and experience for a Class B Lab Operator -

✔✔32 hours of C and 32 hours of B and 6 months experience. ***associate

in science can substitute 32hrs of C level training

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,How many Training Hours and experience for a Class A Lab Operator -

✔✔32 hours of B and 1 year experience. ***Must include a Bachelor in

science

How many Training Hours and experience for a Class C Distribution

Operator - ✔✔36hours and 1 year experience

How many Training Hours and experience for a Distribution Technician -

✔✔8 hours and no training.

Community Water System - ✔✔A public water supply that has at least 15

service connections or serves 25 or more persons on a regular basis

Primary Contaminants - ✔✔Contaminants identifies by the EPA as harmful

to umal health

Maximum Containment Level (MCL) - ✔✔The level in which contaminants

must not exceed or public notification is required.

Cryptosporidium - ✔✔A microsocpic parasite that can be found in water. It

produces cysts that are very resistant to harsh environmental conditions. It

is responsible for intestinal illness called cryptosporidiosis. Symptoms

include diarrhea, cramps, gas, bodily discomfort, fatigue, and weight loss.

Occurs one week after exposure and can last for 1-4 weeks




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, Disinfection Profiling - ✔✔A water system assesses the level of disinfection

currently provided and then determines the impact a proposed change in

disinfection practice would have.

E. coli - ✔✔A bacterium that is commonly used as an indicator of human

health risk from harmful micro organisms that can be present in water.

Symptoms include sever cramps and diarrhea. Blood is often seen in the

stool. Symptoms begin 1-9 days after exposure and last a week or less.

Giardia - ✔✔A microscopic parasite that can be found in water. It produces

cysts that are resistant to harsh environmental conditions. Giardia causes

intestinal illness called giardiasis. Symptoms simular to cryptosporidiosis.

Vomition, chills, headache and fever may also occur. Symptoms begin one

week after exposure and can last up to a month.

Hard Water - ✔✔A characteristic of water caused mainly by the salts of

calcium (Ca++) and magnesium (Mg++). Undesirable due to formation of

soap curds, increase use of soap, and scale deposits in boilers and water

heaters. Defines as having hardness of 100mg/L or greater

Maximum Residual Disinfectant Level (MDRLs) - ✔✔The highest level of

disinfectant allowed in drinking water. Standards set by the US EPA

Microbial Pathogens - ✔✔Micro-organisms that cause disease


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