Which contaminant is UNLIKELY to impact the safety of drinking water after a major farm runoff event into a nearby public water system?

Which contaminant is UNLIKELY to impact the safety of drinking water after a major farm runoff event into a nearby public water system?

• A. Benzene
• B. Nitrate
• C. Alachlor
• D. Glyphosate

Answer: (A)

In agricultural runoff scenarios, the drinking water safety concerns center on nutrients and pesticides that are actually used on fields. Nitrates come from fertilizer and can readily leach into water supplies, while pesticides such as alachlor and glyphosate are applied to crops and can reach surface or groundwater through runoff or leaching. Benzene, on the other hand, is not typically associated with farm runoff. It is more commonly linked to petroleum products, fuels, or industrial solvents. Unless there is a spill or leakage involving fuels near the farm, benzene would not be expected to appear in significant amounts from routine farm runoff. Therefore, benzene is the contaminant least likely to impact drinking water safety after a major farm runoff event into a nearby public water system.

In agricultural runoff scenarios, the drinking water safety concerns center on nutrients and pesticides that are actually used on fields. Nitrates come from fertilizer and can readily leach into water supplies, while pesticides such as alachlor and glyphosate are applied to crops and can reach surface or groundwater through runoff or leaching.

Benzene, on the other hand, is not typically associated with farm runoff. It is more commonly linked to petroleum products, fuels, or industrial solvents. Unless there is a spill or leakage involving fuels near the farm, benzene would not be expected to appear in significant amounts from routine farm runoff.

Therefore, benzene is the contaminant least likely to impact drinking water safety after a major farm runoff event into a nearby public water system.