Regulatory Compliance & Safety Standards Flashcards
7 cards from real WTO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Regulatory Compliance & Safety Standards flashcards as text
Under the Safe Drinking Water Act, which type of public water system serves at least 25 people or 15 service connections year-round?
Answer: Community water system
A Community Water System (CWS) serves at least 25 residents or 15 service connections year-round and is subject to the most comprehensive SDWA regulations.
When handling sodium hypochlorite solution, a water operator should always wear which minimum level of personal protective equipment (PPE)?
Answer: Chemical splash goggles, chemical-resistant gloves, and apron
Sodium hypochlorite is corrosive and can cause serious eye and skin injuries, requiring chemical splash goggles, gloves, and an apron at minimum.
The EPA's Total Coliform Rule requires that water systems with more than 1,000 service connections collect coliform samples based on:
Answer: A written sample siting plan approved by the state
Systems must collect coliform samples according to a written, state-approved sample siting plan that ensures representative coverage of the distribution system.
A water treatment operator is calibrating a chlorine residual analyzer. According to SDWA regulations, what is the minimum free chlorine residual required in the distribution system?
Answer: 0.2 mg/L
EPA regulations require that systems maintain a minimum detectable free chlorine residual of 0.2 mg/L throughout the distribution system.
Which EPA regulation requires water systems to develop and submit Emergency Response Plans (ERPs) along with their Vulnerability Assessments?
Answer: America's Water Infrastructure Act (AWIA) of 2018
AWIA 2018 requires community water systems serving more than 3,300 people to complete risk/resilience assessments and update emergency response plans on a 5-year cycle.
What is the primary purpose of backflow prevention devices installed at cross-connections in a water distribution system?
Answer: Prevent contaminated water from flowing back into the potable supply
Backflow preventers stop contaminated water from reversing direction and entering the potable water supply when pressure differentials occur.
Under OSHA's Respiratory Protection Standard (29 CFR 1910.134), before a water plant employee is assigned to use a respirator, the employer must ensure the employee:
Answer: Receives a medical evaluation to confirm fitness for respirator use
OSHA requires a medical evaluation by a licensed healthcare provider before any employee is permitted to use a respirator, to ensure they can safely wear one.