Water Distribution Exam Bundle Questions and Answers (RATED A+)

Polarity of water - ANSWER-water is a polar molecule meaning it has opposite charges on opposite ends. This causes hydrogen bonds to form causing water to stick together. Watershed - ANSWER-An ecosystem where all water runoff drains into a single body of water River Basin/Drainage Basin - ANSW...

The bubbles formed in a positive multiple tube fermentation test are - ANSWER-Carbon Dioxide The maximum rate of withdrawal of gas from a 150lb chlorine cylinder in 24-hours is - ANSWER-40 lbs If you encounter a liquid chlorine leak in a one tone container, what action should you take first, t...

What do water distribution system operators do with water distribution facilities? - ANSWER-Water distribution system operators make sure water facilities do their intended job. Operators operate, maintain, repair and manage these facilities. List the two major sources of water supplies? - ANSWER...

All the water on Earth is part of a large system. - ANSWER-Hydrosphere 1. All the water on Earth is part of a large system. 2. On Earth, water occurs in all three phases. - ANSWER-Hydrosphere What percent of water covers Earth's surface. - ANSWER-71% What percent of water on Earth is salt...

Chlorine gas - ANSWER-heavier than air, extremely toxic, very corrosive to damp atmospheres Centrifugal pump - ANSWER-Most common pump, used for high flow, and low pressure applications booster pumps Positive displacement pump - ANSWER-For low flow, high pressure applications. Chemical feed pu...

To help prevent tooth decay, public water distribution systems add _____. - ANSWER-fluoride A homeowner is having a well installed in an area where the water table is 30 feet below the surface. The type of well installed will most likely be dug or _____. - ANSWER-driven More gallons per minut...

Cross connection - ANSWER-A connection between a safe and an unsafe water supply is called a Is available for use without causing shortages during dry periods - ANSWER-Safe yield of a water source is the quantity of water which: Rate of flow of water - ANSWER-A Venturi tube increases the veloc...

compression repair clamps should never be used - ANSWER-underground a water and gas safety valve is designed to - ANSWER-shut off water and gas in the event of a leak a globe valve would best be described as a(n) - ANSWER-throttling valve A ____ valve should be used when water is run to a s...

Water (Street) Main - ANSWER-A water supply pipe for public or community, use controlled by public authority. Water Service Pipe - ANSWER-The pipe from the water main, water meter, water supply system. Water Distribution Pipe - ANSWER-A pipe which conveys potable water from the building supply...

A customer complaint about the presence of brown floc in tap water can best be handled by...? - ANSWER-investigating the problem ASAP. The term "aquifer" refers to what type of water? - ANSWER-Groundwater One indication of corrosive water is a high concentration of...? - ANSWER-Carbon dioxid...

evaporation and transpiration - ANSWER-water rises to the atmosphere Transpiration - ANSWER-Evaporation of water from plants Infiltration/percolation - ANSWER-downward movement of water through the soil Aquifer - ANSWER-A body of rock or sediment that stores groundwater and allows the flow ...

Who sets Maximum Contaminants Levels (MCLs)? - ANSWER-USEPA What are some of the duties of the EPA? - ANSWER-Sets MCLs, delegates enforcement of SDWA to state agencies, provides grant funds, monitors state activities, provides continued research What is state primacy? - ANSWER-Giving the autho...

Which regulation specifies operator training and certification requirements - ANSWER-O.Reg. 128/04 - Certification of Drinking Water System Operators and Water Quality Analysts Which regulations addresses requirements for alarms - ANSWER-O. Reg. 170/03 - Drinking Water systems In case of adver...

rain water - ANSWER-is soft and pure and is suitable for the hot water supply system rain water - ANSWER-only a source during the wet season; storage becomes a breeding place for mosquitoes; rain water - ANSWER-roof may not be clean natural surface water - ANSWER-obtained from ponds, lakes ...

What is stratification in lakes and reservoirs? - ANSWER-Formation of separate layers of temperature, plant life, or animal life What causes the elevation and slope of water tables and artesian pressure levels to change? - ANSWER-Seasonal variations in the supply of water How extensive should ...

The number of monthly distributions system bacteriologiacal samples required is - ANSWER-Based on the population served What is the maximum contaminant level for total trihalomethanes (TTHM) in the united States? - ANSWER-0.080 mg/L Under the Surface Water Treatment Rule, disinfection residual...

Bog - ANSWER-A wetland with moss and acidic water, typically found in cooler climates Divide - ANSWER-A ridge of land that separates two watersheds; there is a continental one in North America in the Rocky Mountains Estuary - ANSWER-A partially enclosed body of water along the coast where fres...

Nitrate may not exceed what concentration when tested yearly for a groundwater treatment plant ? - ANSWER-10 mg/L The minimum number of total coliform samples that must be collected per month is based on Wich of the following ? - ANSWER-The population served by the system When a distribution b...

Estuary - ANSWER-the area where a freshwater stream or river merges with the ocean freshwater - ANSWER-water that has a low salinity. glacier - ANSWER-A large mass of moving ice and snow on land groundwater - ANSWER-water held underground in the soil or in pores and crevices in rock. hyd...

What term is used when a water utility divides its total operating expenses into the total revenue? a.) Debt ratio b.) Operating ratio c.) Credit ratio d.) Coverage ratio - ANSWER-b.) Operating ratio Under the requirements of the Safe Drinking Water Act, it is the duty of the water purveyor...

as the temperature of water increases the disinfection process - ANSWER-more effective water with a ph of 8.0 is considered - ANSWER-basic what is a low voltage electrical system that is used to prevent rust corrosion and pitting of metal surfaces in contact with water - ANSWER-cathodic protec...

Impermeable - ANSWER-Does not allow water to flow through Permeable - ANSWER-Having pores or openings that allow water or other liquids to flow through them Aquifer - ANSWER-An underground layer of rock or soil that holds water Artesian Well - ANSWER-An underground water source in which wat...

Water Cycle - ANSWER-The process of evaporation of water into the air and its return to earth by precipitation (rain or snow). This process also includes transpiration from plants, groundwater movement, and runoff in to rivers, streams, and the ocean. Also called the hydrologic cycle. Direct Runo...