Which color best identifies the blue stake marking for potable water?

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Prepare for the CR-21 Landscapes and Irrigation Test. Utilize flashcards and multiple-choice questions featuring hints and explanations. Get exam-ready!

Multiple Choice

Which color best identifies the blue stake marking for potable water?

Explanation:
Color-coded utility markings help prevent digging into underground lines. For drinking water, blue is the standard color, so a stake painted blue identifies a potable water line. That’s why blue is the correct choice here. Other colors point to different utilities—red for electric, green for sewer/drain, yellow for gas or other combustible lines—so they wouldn’t indicate potable water. Before any digging, always note the color markings and confirm with the local utility locator to avoid damaging underground services.

Color-coded utility markings help prevent digging into underground lines. For drinking water, blue is the standard color, so a stake painted blue identifies a potable water line. That’s why blue is the correct choice here. Other colors point to different utilities—red for electric, green for sewer/drain, yellow for gas or other combustible lines—so they wouldn’t indicate potable water. Before any digging, always note the color markings and confirm with the local utility locator to avoid damaging underground services.

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