NFPA 25
NFPA 25 is the Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems. It covers everything from the sprinkler heads in your ceiling to the fire pump in the basement to the underground mains feeding the hydrants outside. The frequencies range from weekly gauge checks on dry-pipe systems through 5-year internal pipe obstruction investigations.
Key requirements
- 1
Weekly inspection of dry-pipe/pre-action system gauges and air pressure
- 2
Quarterly waterflow alarm device testing
- 3
Annual main drain test, control valve exercise, and dry-pipe/pre-action trip test
- 4
Annual fire pump test (full flow at 150% capacity)
- 5
5-year internal pipe inspection (also called an obstruction investigation)
- 6
5-year standpipe hydrostatic test on dry standpipes
- 7
Written NFPA 25 report with deficiencies, non-compliances, and impairments classified
Published summary for informational use. Fire code adoption varies by jurisdiction and edition. Verify current enforced codes with your local Authority Having Jurisdiction (AHJ) and consult a licensed fire protection contractor before taking action. Not legal or professional advice.