WATER SOURCES
This type of water is most influenced by rainfall and runoff.
What is surface water?
This chemical is most commonly used as a coagulant.
What is alum?
Convert 12°C to Fahrenheit.
What is 54°F?
This act governs drinking water standards in the U.S.
What is the Safe Drinking Water Act (SDWA)?
This device measures flow in a pipe using float movement.
What is a rotameter?
Water stored underground in permeable rock layers is called this.
What is an aquifer?
This process removes dissolved gases like hydrogen sulfide.
What is aeration?
A system uses 100 lbs chlorine over 4 days. Daily usage?
What is 25 lbs/day?
The MCL for nitrate is this.
What is 10 mg/L?
This valve allows flow in only one direction.
What is a check valve?
This condition occurs when lake water separates into layers based on temperature.
What is stratification?
Direct filtration differs because it skips this step.
What is sedimentation?
52 psi equals approximately how many feet of head?
What is 120 feet?
The MCL for nitrite is this.
What is 1 mg/L?
This safety device protects workers from chlorine exposure.
What is an SCBA?
The seasonal mixing of lake water is called this.
What is turnover?
This filter media removes taste and odor compounds.
What is activated carbon?
A tank drops from 150 lbs to 100 lbs in 2 days. Daily usage?
What is 25 lbs/day?
Total Trihalomethanes (TTHM) limit is this.
What is 0.08 mg/L?
A centrifugal pump spinning backwards usually indicates this issue.
What is a check valve failure?
This type of lake mixes only once per year.
What is monomictic?
This chemical is commonly used to kill blue-green algae.
What is copper sulfate?
Basin volume = 24 ft × 12 ft × 8 ft. Flow = 1.1 MGD. Find detention time.
What is ~32 minutes?
This rule addresses coliform bacteria monitoring.
What is the RTCR (Revised Total Coliform Rule)?
Air gap spacing must be how many times the pipe diameter?
What is 2 times?