Water Distribution Operator Class - Cace School Exam -Solved

Public Notification Rule - ANSWER-Rule of the Safe Drinking Water Act that ensures that consumers will know if there is a problem with their drinking water. These notices alert consumers if there is risk to public health Maximum contaminated level (MCL) - ANSWER-Standards that are set by the United States Environmental Protection Agency (EPA) for drinking water quality. Legal threshold limit on the amount of a substance that is allowed in public water systems under the Safe Drinking Water Act Sanitary Survey - ANSWER-Onsite inspection of the water source, facilities, equipment, operation, and maintenance of a public water system Consumer Confidence Report - ANSWER-Report that provides information on your local drinking water quality. Every community water supplier must provide an annual report by July 1 of each year to its customers, according to the U.S. Environmental Protection Agency's (EPA) Aquifer - ANSWER-An underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt) from which groundwater can be extracted using a water well Cone of depression - ANSWER-Occurs in an aquifer when groundwater is pumped from a well Confined space - ANSWER-Enclosed area with limited space and accessibility. An example is the interior of a storage tank, which may be occasionally entered by workers for maintenance but is otherwise not a habitable space Composite sample - ANSWER-Mixture of grab samples taken at different times or locations and pooled together to provide one sample Water Yield - ANSWER-The total outflow from all or part of a drainage basin through either surface channels or subsurface aquifers within a given time (e.g., one year) Overdraft - ANSWER-The pumping of water from a groundwater basin or aquifer in excess of the supply flowing into the basin; results in a depletion or "mining" of the groundwater in the basin Apparent color of water - ANSWER-The color of the whole water sample, and consists of color from both dissolved and suspended components Volatile - ANSWER-Liquids which easily vaporize or evaporate at room temperature True color - ANSWER-Color of water measured after filtering the water sample to remove all suspended materia Tuberculation - ANSWER-The development of corrosion products or rust Microfiltration - ANSWER-Low-pressure membrane filtration process that takes small suspended particles, bacteria and other materials out of the water Reverse Osmosis - ANSWER-High-pressure membrane filtration process that forces water through the molecular structure of several sheet of thin plastic membranes to filter out minerals and contaminants, including salts, viruses, pesticides, and other materials Ultraviolet light - ANSWER-Powerful disinfection process that creates water of very high quality by exposing microorganisms (such as cryptosporidium, giardia lamblia and more) to UV radiation, via special light bulb, which disrupts their DNA and disables their ability to replicate Acree foot - ANSWER-Unit of volume of water: the amount covering one acre to a depth of one foot, equal to 43,560 cubic feet or 326,000 gal Direct Potable Reuse DPR - ANSWER-Process of treating wastewater to drinkable standards and returning it to the raw water supply without the use of an environmental buffer. Rather than mixing the treated water into an aquifer or reservoir Indirect Potable Reuse IPR - ANSWER-Blending of advanced treated, recycled or reclaimed water into a natural water source (groundwater basin or reservoir) that could be used for drinking (potable) water after further treatment. Safe Water Drinking Act - ANSWER-Federal law that protects public drinking water supplies throughout the nation. Under the _________, EPA sets standards for drinking water quality and with its partners implements various technical and financial programs to ensure drinking water safety Turbidity - ANSWER-Cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of _____________ is a key test of water quality. Algal Bloom - ANSWER-Rapid increase in the population of algae in an aquatic system Piezometric surface - ANSWER-The imaginary surface that everywhere coincides with the piezometric head of the water butterfly valve - ANSWER-Valve were a movable disc rotates on a spindle or shaft