Coliform Study guides, Class notes & Summaries

REHS Exam Questions with Complete Solutions | 2024 Which of the following organisms are most resistant to unfavorable environmental conditions and indicate past of possibly intermittent pollution? a. fecal streptococci b. eschericha coli c. aerobacter aerogenes d. clostridium sporulates - Answer️️ -clostridium sporulates The presence of which of the following is most easily identified by laboratory analysis in water contaminated by feces? a. shigella dysenteriae b. coliform c. en...

TCEQ Class D Water Operator License Exam Questions and Answers Latest 2024/2025 | 100% Correct | Graded A+. Drought is an extended period when a region receives a deficiency in its ________ water supply. (Ans- atmospheric, ground, or surface T/F: Only about 1 gallon of tap water per person/day is used for drinking and cooking (Ans- True Excluding outside water use, the average household uses about _______ gallons of water per month for inside use (Ans- 2,000 T/F: Only 3% of all the fres...

Which agency sets legal limits on the concentration levels of harmful contaminants in potable water distributed to customers? - Answer-US Environmental Protection Agency 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 residuals must be collected at the sam...

Wastewater Study Guide Exam Questions And Answers The name of the State Agency responsible for enforcing pollution control laws in Texas is - a. Texas Water Development Board b. Texas Water Commission c. Texas Section of EPA d. Texas Commission on Environmental Quality e. Texas Water Resource and Conservation Commission - ANS D The term pathogenic means - a. Aerobic Bacteria b. Anaerobic Bacteria c. Fecal Matter d. Coliform Bacteria e. Capable of Causing Disease - A...

Which of the following organisms are most resistant to unfavorable environmental conditions and indicate past of possibly intermittent pollution? a. fecal streptococci b. eschericha coli c. aerobacter aerogenes d. clostridium sporulates - ANSWER-clostridium sporulates The presence of which of the following is most easily identified by laboratory analysis in water contaminated by feces? a. shigella dysenteriae b. coliform c. entamoeba histolytica d. salmonella typhosa - ANSWER-coli...

AWWA ABC Water Distribution Grades 1 Questions and Answers 100% Solved 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, dis...

Primary headworks of a wastewater treatment plant: - Bar screens, primary settling basins (clarifiers) A pH of 0 to 7 is what? - Acidic A pH of 7 is? - Neutral A pH of 7 to 14 is? - Basic If there is color in water, in order to remove it, it must be? - A suspension Is rabies a bacteria or virus? - Virus How does rabies infect a human? - Through their central nervous system What animals are safe from rabies? - rodents and lagomorphs (non mammalians) How is Hepatitis A transmitted? - Fecal...

REHS Exam Questions with Accurate Answers 2024 Which of the following organisms are most resistant to unfavorable environmental conditions and indicate past of possibly intermittent pollution? a. fecal streptococci b. eschericha coli c. aerobacter aerogenes d. clostridium sporulates clostridium sporulates The presence of which of the following is most easily identified by laboratory analysis in water contaminated by feces? a. shigella dysenteriae b. coliform c. entamoeba hist...

State Agency responsince for enforcing the safe drinking water act in Texas CORRECT ANSWER Texas Commission on environmental Quality What minerals can cause water hardness CORRECT ANSWER Calcium and magnesium A public water system must at all times provide CORRECT ANSWER Adequate quantity of water, pressure, and disinfection A source groundwater would be CORRECT ANSWER aquifer Fecal coliform organisms sometimes found in water supplies are an indication that CORRECT ANSWER Water suppl...

AWWA, ADEM Grade 4 Laboratory Analysis - Equipment and Maintenance The,100% Solved What test is done by a lab to determine data quality? spiked tests samples A beaker is used primarily for mixing chemicals What is the primary constituent of the pH-causing ions in a water sample if the pH is above 10? OH-1 Coliform bacteria will produce gas in _____broth at ____within____ lactose or lauryl tryptose, 35.5 C, 24-48hrs Number of samples under the Total coliform Rule ...