CWEA Wastewater Laboratory Analyst
Certification Exam
Practice Questions (Latest 2026 Update)
Questions and Verified CORRECT 100%
SOLUTIONs | 100% Correct | Grade A+
The legal responsibility for insuring that the approved methods of analysis
have been used to generate data lies with:
(a)the laboratory
(b)the EPA
(c) the person who signs the DMR
(d)the state agency issuing the permit - SELECTED CORRECT 100%
SOLUTION 👀 C
Explanation
The ultimate responsibility for determining that the correct methods have
been used and referenced lies with the person who signs the Discharge
Monitoring Report (DMR). The signature is attestation that the signer takes
all responsibility.
The approved methods of analysis under the industrial pre-treatment
program are:
(a)any EPA method
(b)any method
(c) any method in Standard Methods
,(d)only those methods approved by the permitting authority - SELECTED
CORRECT 100% SOLUTION 👀 D
Explanation
Like the compliance monitoring analysis program, methods must be
specifically approved by the permitting authority (municipalities) under the
industrial pretreatment program.
The analytical contents of the wastewater Pollutant list:
(a)are set by EPA and are constant from state to state
(b)varies from state to state
(c) are based upon section 301(a)(1) of the CWA
(d)are also what are termed characteristics of hazardous waste -
SELECTED CORRECT 100% SOLUTION 👀 B,C
Explanation
Section 301(a)(1) of the CWA lists regulated pollutants. Three classes are
recognized: 1) Conventional pollutants, 2) Non-conventional pollutants, and
3) Toxic pollutants. However, individual states have the authority to set the
limits as long as they are at least as strict as the EPA limits. Accordingly,
the limits vary from state to state. The characteristics of hazardous waste
are associated with RCRA.
Oil & Grease is an example of:
(a)a non-conventional pollutant
(b)a conventional pollutant
, (c) a toxic pollutant
(d)a regular pollutant - SELECTED CORRECT 100% SOLUTION 👀 B
Explanation
Section 301(a)(1) of the Clean Water Act (CWA) lists regulated pollutants.
Three classes are recognized: 1) Conventional pollutants, 2) Non-
conventional pollutants, and 3) Toxic pollutants. Oil & Grease is on the
conventional pollutant list.
The following are toxic pollutants:
(a)BOD5
(b)Mercury
(c) Pentachlorophenol
(d)Phosphorus - SELECTED CORRECT 100% SOLUTION 👀 B,C
Explanation
Section 301(a)(1) of the Clean Water Act (CWA) lists regulated pollutants.
Three classes are recognized:
1) Conventional pollutants,
2) Non-conventional
pollutants, and 3) Toxic
pollutants.
Mercury and compounds, and Pentachlorophenol are on the toxic pollutant
list. Biochemical oxygen demand (BOD) is on the conventional pollutant
list. Total phosphorus is on the nonconventional pollutant list.
Certification Exam
Practice Questions (Latest 2026 Update)
Questions and Verified CORRECT 100%
SOLUTIONs | 100% Correct | Grade A+
The legal responsibility for insuring that the approved methods of analysis
have been used to generate data lies with:
(a)the laboratory
(b)the EPA
(c) the person who signs the DMR
(d)the state agency issuing the permit - SELECTED CORRECT 100%
SOLUTION 👀 C
Explanation
The ultimate responsibility for determining that the correct methods have
been used and referenced lies with the person who signs the Discharge
Monitoring Report (DMR). The signature is attestation that the signer takes
all responsibility.
The approved methods of analysis under the industrial pre-treatment
program are:
(a)any EPA method
(b)any method
(c) any method in Standard Methods
,(d)only those methods approved by the permitting authority - SELECTED
CORRECT 100% SOLUTION 👀 D
Explanation
Like the compliance monitoring analysis program, methods must be
specifically approved by the permitting authority (municipalities) under the
industrial pretreatment program.
The analytical contents of the wastewater Pollutant list:
(a)are set by EPA and are constant from state to state
(b)varies from state to state
(c) are based upon section 301(a)(1) of the CWA
(d)are also what are termed characteristics of hazardous waste -
SELECTED CORRECT 100% SOLUTION 👀 B,C
Explanation
Section 301(a)(1) of the CWA lists regulated pollutants. Three classes are
recognized: 1) Conventional pollutants, 2) Non-conventional pollutants, and
3) Toxic pollutants. However, individual states have the authority to set the
limits as long as they are at least as strict as the EPA limits. Accordingly,
the limits vary from state to state. The characteristics of hazardous waste
are associated with RCRA.
Oil & Grease is an example of:
(a)a non-conventional pollutant
(b)a conventional pollutant
, (c) a toxic pollutant
(d)a regular pollutant - SELECTED CORRECT 100% SOLUTION 👀 B
Explanation
Section 301(a)(1) of the Clean Water Act (CWA) lists regulated pollutants.
Three classes are recognized: 1) Conventional pollutants, 2) Non-
conventional pollutants, and 3) Toxic pollutants. Oil & Grease is on the
conventional pollutant list.
The following are toxic pollutants:
(a)BOD5
(b)Mercury
(c) Pentachlorophenol
(d)Phosphorus - SELECTED CORRECT 100% SOLUTION 👀 B,C
Explanation
Section 301(a)(1) of the Clean Water Act (CWA) lists regulated pollutants.
Three classes are recognized:
1) Conventional pollutants,
2) Non-conventional
pollutants, and 3) Toxic
pollutants.
Mercury and compounds, and Pentachlorophenol are on the toxic pollutant
list. Biochemical oxygen demand (BOD) is on the conventional pollutant
list. Total phosphorus is on the nonconventional pollutant list.
