TEXAS WASTEWATER B CERTIFICATION
EVALUATION 2026 SOLVED QUESTION SET
GRADED A+
◉ ___________would have an adverse effect on the proper settling of
solids in a clarifier..
Answer: A short circuiting flow pattern
◉ This test would give the best information on how efficiently a
trickling filter was operating.
Answer: Percent BOD Removal
◉ This trickling filter problem could be reduced by increasing the
recirculation ratio.
Answer: Filter files
◉ What gases are produced by the controlled anaerobic digestion of
wastewater sludge's.
Answer: Methane & Carbon Dioxide
◉ These diseases are caused by pathogenic organisms that may be
present in raw wastewater.
, Answer: Hepatitis, typhoid, paratyphoid,dysentery, cholera,
gastroenteritis, polio, hookworm and giardiasis
◉ During heavy rain it is possible that manholes and lift stations
may overflow, discharge waste materials into roadways or ditches.
This type of discharge (SSO) would be.
Answer: considered an unavoidable discharge, a violation of the
Texas Water Code, a bypass that must be reported within 24 hours
and considered a health hazard
◉ An effective way for the collection system worker to prevent
infection by waterborn pathogenic organism is to.
Answer: Wear protective clothing and avoid direct contact with
waste water
◉ _________will increase the chances that sewage will turn septic.
Answer: Stoppages in the main line
◉ Extensive use of garbage disposals (grinders) in a community
would likely have the following effect on the collection system.
Answer: Increase the amount of flow, solids, and grease
◉ The minimum size for a gravity flow sewer line on city right-of-
way and the minimum grade is.
EVALUATION 2026 SOLVED QUESTION SET
GRADED A+
◉ ___________would have an adverse effect on the proper settling of
solids in a clarifier..
Answer: A short circuiting flow pattern
◉ This test would give the best information on how efficiently a
trickling filter was operating.
Answer: Percent BOD Removal
◉ This trickling filter problem could be reduced by increasing the
recirculation ratio.
Answer: Filter files
◉ What gases are produced by the controlled anaerobic digestion of
wastewater sludge's.
Answer: Methane & Carbon Dioxide
◉ These diseases are caused by pathogenic organisms that may be
present in raw wastewater.
, Answer: Hepatitis, typhoid, paratyphoid,dysentery, cholera,
gastroenteritis, polio, hookworm and giardiasis
◉ During heavy rain it is possible that manholes and lift stations
may overflow, discharge waste materials into roadways or ditches.
This type of discharge (SSO) would be.
Answer: considered an unavoidable discharge, a violation of the
Texas Water Code, a bypass that must be reported within 24 hours
and considered a health hazard
◉ An effective way for the collection system worker to prevent
infection by waterborn pathogenic organism is to.
Answer: Wear protective clothing and avoid direct contact with
waste water
◉ _________will increase the chances that sewage will turn septic.
Answer: Stoppages in the main line
◉ Extensive use of garbage disposals (grinders) in a community
would likely have the following effect on the collection system.
Answer: Increase the amount of flow, solids, and grease
◉ The minimum size for a gravity flow sewer line on city right-of-
way and the minimum grade is.
