TCEQ Class D Water Operators License
Exam Verified 2025
(0.8 to 1.0 mg/L) - ANSWER-Optimum concentration of Fluoride
>10 mg/l ; >1 mg/L - ANSWER-Levels of Nitrate and Nitrite that put infants under 6
months of age and pregnant women at risk of "blue baby" syndrome.
0..3 - ANSWER-The action level for lead is _______ Mg/L and for copper it is
________ Mg/L
0.2 mg/L - ANSWER-A minimum free chlorine residual of ___ mg/L is required
0.3 NTU or less at least 95% of the time. Can never exceed 1.0 NTU. - ANSWER-
TCEQ requires a combined filter effluent (CFE) turbidity of
0.5 Mg/L - ANSWER-A minimum combined/total residual of ____ mg/L is required
0.6 GPM - ANSWER-TCEQ requires community ground water systems with storage to
have a minimum well pumping capacity of _____ GPM per connection served
1% - ANSWER-3% of total volume of water available is considered fresh water. 2% is
locked in polar icecaps and glaciers. ____% of all water on earth is accessible fresh
water.
10 years - ANSWER-Chemical analysis of treated water, monthly operating report MOR
, sanitary survey inspection reports CCI, customer service inspection records
130 - ANSWER-Utilities that provide fire protection have to have a minimum of ____
Gallons per person per day
15 - ANSWER-The state recommends ________ color units or less for drinking water.
150 feet - ANSWER-No public Wells Sight can be within ____ feet of a septic tank
drainfield, OSSF spray irrigation, improperly constructed water well
2 years - ANSWER-Records Kept Required: amount of chemicals used, volume of
water treated, complaint log, dead-end line flushing, cleaning records of water storage
tanks
2000 - ANSWER-Excluding outside use, the average household uses about _____
gallons of water per month on inside use
3 - ANSWER-The state recommends a TON of _______ or less
Exam Verified 2025
(0.8 to 1.0 mg/L) - ANSWER-Optimum concentration of Fluoride
>10 mg/l ; >1 mg/L - ANSWER-Levels of Nitrate and Nitrite that put infants under 6
months of age and pregnant women at risk of "blue baby" syndrome.
0..3 - ANSWER-The action level for lead is _______ Mg/L and for copper it is
________ Mg/L
0.2 mg/L - ANSWER-A minimum free chlorine residual of ___ mg/L is required
0.3 NTU or less at least 95% of the time. Can never exceed 1.0 NTU. - ANSWER-
TCEQ requires a combined filter effluent (CFE) turbidity of
0.5 Mg/L - ANSWER-A minimum combined/total residual of ____ mg/L is required
0.6 GPM - ANSWER-TCEQ requires community ground water systems with storage to
have a minimum well pumping capacity of _____ GPM per connection served
1% - ANSWER-3% of total volume of water available is considered fresh water. 2% is
locked in polar icecaps and glaciers. ____% of all water on earth is accessible fresh
water.
10 years - ANSWER-Chemical analysis of treated water, monthly operating report MOR
, sanitary survey inspection reports CCI, customer service inspection records
130 - ANSWER-Utilities that provide fire protection have to have a minimum of ____
Gallons per person per day
15 - ANSWER-The state recommends ________ color units or less for drinking water.
150 feet - ANSWER-No public Wells Sight can be within ____ feet of a septic tank
drainfield, OSSF spray irrigation, improperly constructed water well
2 years - ANSWER-Records Kept Required: amount of chemicals used, volume of
water treated, complaint log, dead-end line flushing, cleaning records of water storage
tanks
2000 - ANSWER-Excluding outside use, the average household uses about _____
gallons of water per month on inside use
3 - ANSWER-The state recommends a TON of _______ or less
