Awwa water distribution - Study guides, Class notes & Summaries

Which agency sets legal limits on the concentration levels of harmful contaminants in potable water distributed to customers? US Environmental Protection Agency The number of monthly distributions system bacteriologiacal samples required is Based on the population served What is the maximum contaminant level for total trihalomethanes (TTHM) in the united States? 0.080 mg/L Under the Surface Water Treatment Rule, disinfection residuals must be collected at the same location in the dist...

AWWA ABC Water Distribution Grades 1 & 2

Surface Water General Exam Quuestions and Complete Solutions Texas Commission of Environmental Quality - Answer: What is the name of the State Agency responsible for enforcing the safe drinking water program in Texas Calcium and Magnesium - Answer: What minerals cause water hardness? Adequate quantity of water adequate water pressure adequate disinfection - Answer: A public water system must at all times provide Aquifer - Answer: A source of groundwater would be water supply is ...

Class D Water Operator Exam Questions and Complete Solutions What are some physical characteristics of water? - Answer: Temperature, turbidity, color, taste, odor What are some chemical characteristics of water? - Answer: Hardness, pH, solids, and gases What is turbidity? - Answer: the amount of suspended matter, such as clay, silt, organic matter, and microorganisms in water T/F Water is never found pure in nature. - Answer: True Is turbidity more of a problem in groundwater or s...

Texas irrigation exam Questions and Answers Verified 100% how often does a licensed irrigator need to renew his license ? - once every three years which is /are the strategic goal/goals of TCEQ? - 1 - enforcement 2- water quality 3- waste management individual responsible for obtaining permits and inspections ? - Licensed Irrigador when is it acceptable for a licensed technician to alter the irrigation design? - when the technician receives approval from the license Irrigador ...

TCEQ Ground storage at a surface water treatment receiving the treated water is called the? - CORRECT ANSWERS clear well The TCEQ requires all storage tanks to have screened vents, licked hatches, a dustproof cover, overflows with hinged flaps, and - CORRECT ANSWERS entry ports Total storage capacity (elevated storage included) must be how many gallons? - CORRECT ANSWERS 200 Storage tanks must be painted, disinfected, and maintained according to what standards? - CORRECT ANSWERS AWWA Coa...

A __________ is a single-volume sample collected at one time from one place. - Grab sample A corporation stop is used for a - service line A plat is - a map A positive E. Coli test must be reported to the primacy health agency within what time period? - 24 hours A water system is designated a community public water system if it serves how many homes? - 15 or more According to the Lead and Copper Rule, what is the action level for lead? - 0.015 mg/L

BACKFLOW TEST 1. The Safe Drinking Act places the responsibility for safe water upon the: a. Building Official b. Water purveyor c. Water user d. Health Department - ANS b. Water Purveyor 2. Two things must be present for backflow to occur: a. Link and force b. Direct and indirect c. Pressure and Siphonage d. Backpressure and elevation - ANS a. link and force A column of water 100 feet in height will produce how much pressure at its base. a. 231 psi b. 33.9 psi c. ...

Water distribution practice exam #2 (D1-D2) (2022/2023) graded A+ Which process converts ammonia to nitrite and nitrate? Nitrification What is the maximum advisable rate of chlorine gas removal from a 150- pound cylinder? 40 pounds per day What is a type of positive displacement water meter? Nutating- disk meter What is a power-operated mechanism for opening and closing a valve? Actuator What is required if a routine sample test positive for total coliform bacteria? Take repeat samples Why ...

Which agency sets legal limits on the concentration levels of harmful contaminants in potable water distributed to customers? US Environmental Protection Agency The number of monthly distributions system bacteriologiacal samples required is Based on the population served What is the maximum contaminant level for total trihalomethanes (TTHM) in the united States? 0.080 mg/L Under the Surface Water Treatment Rule, disinfection residuals must be collected at the same location in the distribu...