A residential lawn irrigation system supplied by potable water and using chemical fertilizer injection would be classified as which hazard level?

A residential lawn irrigation system

Multiple choice — select the best answer

ALow hazard — only soil contact involved
BLow hazard — residential systems are always low hazard
CHigh hazard — chemical injection creates a potential health hazard
DMedium hazard — fertilizers are not immediately toxic

✓ Correct answer: C. High hazard — chemical injection creates a potential health hazard The introduction of chemical fertilizers or pesticides through an injector connected to the potable supply creates a high-hazard cross-connection, regardless of the residential setting. This requires at minimum a reduced pressure principle backflow preventer.

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Topic: Backflow & Cross-Connection

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A residential lawn irrigation system supplied by potable water and using chemical fertilizer injection would be classified as which hazard level?

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