NFPA 25-2023 PDF

Full title and description

NFPA 25: Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems (2023). This consensus standard establishes minimum requirements and procedures for the periodic inspection, testing, and maintenance of sprinkler systems, standpipe and hose systems, private fire mains, fire pumps, water storage tanks, foam-water systems, water mist systems and related water-based fire protection components to help ensure system reliability and performance.

Abstract

NFPA 25 (2023) provides the inspection, testing and maintenance (ITM) requirements and frequencies for water-based fire protection systems, identifies owner responsibilities, and describes impairment handling, recordkeeping and corrective actions needed to maintain system readiness. The standard is organized by general requirements, system-specific chapters, corrective action/impairment handling, and informative annexes that offer explanatory material and sample forms.

General information

• Status: Superseded / replaced by the NFPA 25 — 2026 edition (users should check the authority having jurisdiction for adoption requirements and effective dates).
• Publication date: 1 January 2023.
• Publisher: National Fire Protection Association (NFPA).
• ICS / categories: Fire protection; water-based fire protection systems (ICS grouping for fire protection standards, e.g., 13.220 family).
• Edition / version: 2023 edition (revises NFPA 25-2020).
• Number of pages: 206 pages (standard text; handbook and supplemental materials published separately).

Scope

The standard applies to the periodic inspection, testing and maintenance of installed water-based fire protection systems and associated appurtenances, and to actions required when occupancy, use, material storage, process or water supply changes could affect system performance. NFPA 25 addresses system condition, impairment handling and reporting, and owner responsibilities but does not itself require verification of design adequacy (installation conformity is addressed by the applicable installation standards). Coordination with other NFPA standards (for example NFPA 72 for alarm testing) is expected where scopes overlap.

Key topics and requirements

• Owner responsibility for maintaining, inspecting, testing and documenting water-based fire protection systems.
• Inspection, testing and maintenance (ITM) frequencies and procedures for sprinkler systems, standpipes, private fire mains, fire pumps and water storage tanks.
• Requirements for impairment handling, notification, and temporary protection when systems are out of service.
• Valve and device inspections, waterflow and alarm testing, and supervisory signal verification.
• Internal condition inspections, corrosion control, and corrective actions for deficiencies found during ITM.
• System-specific provisions for foam-water, water-mist and special application systems.
• Recordkeeping, tagging and reporting requirements to demonstrate compliance and system readiness.

Typical use and users

NFPA 25 is used by building owners, facility managers, fire protection contractors, inspection and testing firms, authorities having jurisdiction (AHJs), insurance examiners and consulting engineers to establish and verify required maintenance programs for water-based fire protection systems. It is commonly referenced by model codes and local adoption ordinances as the ITM baseline.

Related standards

NFPA 25 is closely linked to other NFPA and model code documents, including NFPA 13 (sprinkler installation), NFPA 14 (standpipes), NFPA 20 (fire pumps), NFPA 24 (private fire service mains), NFPA 22 (water storage tanks), NFPA 72 (fire alarm and signaling) and the applicable editions of the International/Model Fire and Building Codes where adopted.

Keywords

Inspection, testing, maintenance, ITM, sprinkler systems, standpipes, fire pumps, private fire mains, water storage tanks, impairments, NFPA, water-based fire protection.

FAQ

Q: What is this standard?

A: NFPA 25 is the American National Standard that sets minimum requirements for the inspection, testing and maintenance of water-based fire protection systems to help ensure they operate as intended in the event of a fire.

Q: What does it cover?

A: It covers owner responsibilities, inspection and testing schedules and procedures, corrective actions, impairment handling, recordkeeping and system-specific ITM requirements for sprinklers, standpipes, fire pumps, private mains, storage tanks and related equipment.

Q: Who typically uses it?

A: Building owners, facility managers, fire protection contractors and inspectors, AHJs, consulting engineers and insurers use NFPA 25 to establish and verify required inspection and maintenance programs.

Q: Is it current or superseded?

A: The 2023 edition was the active NFPA 25 edition published 1 January 2023; it has been superseded by the NFPA 25 — 2026 edition (users should confirm the effective adoption date in their jurisdiction and consult the latest published edition for current requirements).

Q: Is it part of a series?

A: NFPA 25 is one of several NFPA documents addressing water-based fire protection and is typically used alongside NFPA installation and equipment standards such as NFPA 13, 14, 20 and 24 as part of a complete fire protection regulatory framework.

Q: What are the key keywords?

A: Inspection, testing, maintenance, water-based systems, sprinkler, standpipe, fire pump, private mains, water storage, impairments, NFPA 25.