Water Quality & Management Flashcards
7 cards from real GAP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Water Quality & Management flashcards as text
Which scenario represents a 'direct contact' use of agricultural water under the FSMA Produce Safety Rule?
Answer: Overhead sprinkler irrigation of leafy greens during the growing season
Overhead sprinkler irrigation of leafy greens applies water directly to the harvestable portion of the crop, qualifying as direct contact under FSMA.
A grower applies a foliar pesticide spray using water from an untested surface source. What GAP concern does this raise?
Answer: Contaminated water applied via foliar spray may transfer pathogens directly onto the edible crop surface
Any liquid applied directly to crop surfaces via foliar spray can carry microbial contaminants, making water quality critical for this application method.
How often should irrigation system filters and pipes be inspected and cleaned under GAP water management practices?
Answer: Regularly throughout the season and before reuse after periods of non-use
Regular inspection and cleaning prevents biofilm buildup, sediment accumulation, and pest harborage inside irrigation infrastructure that could contaminate water.
What does it mean when a water test result is reported as 'less than the detection limit' for generic E. coli?
Answer: E. coli was not detected at or above the minimum concentration measurable by the test method
A result below the detection limit means no E. coli was found at quantifiable levels, which is a favorable outcome for water quality.
Which of the following is the BEST practice for storing water samples before delivering them to a testing laboratory?
Answer: Keep samples chilled at 4°C (39°F) and deliver within 6 hours of collection
Chilling samples at 4°C slows microbial growth without killing organisms, and the 6-hour hold time limit ensures accurate results reflective of field conditions.
Under GAP, why is it important to map the entire agricultural water system, including all intake points, distribution lines, and storage facilities?
Answer: To identify all potential points of contamination entry and ensure each is addressed in the water management plan
A complete system map reveals every location where contaminants could enter, allowing the grower to monitor and control the full water pathway from source to crop.
Which of the following water management actions would be recorded in a GAP corrective action log?
Answer: Switching from a contaminated surface water source to potable water after a failed test result
A corrective action log documents the specific response taken when a food safety problem — such as a failed water test — is identified, as required by GAP auditors.