Which issue listing in sprinkler system maintenance could prevent proper operation due to blockage?

• A. Debris or sediment in the pipes
• B. High water pressure
• C. Painted sprinkler heads
• D. Excessive humidity

Answer: (A)

Blockage in a sprinkler system most often comes from debris or sediment that gets into the pipes. When that material accumulates, it narrows or seals passages, restricting water flow and preventing sprinkler heads from operating correctly. Regular maintenance to avoid debris—installing strainers or screens, flushing lines to remove sediment, inspecting for rust or scale, and cleaning or replacing clogged heads—keeps the system flowing properly. The other issues don’t create blockages in the plumbing: high water pressure can stress components and alter spray patterns, painted heads can affect visibility or mechanical action but don’t clog the pipes, and excessive humidity is environmental and does not obstruct the water paths.