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Massachusetts sprinkler inspection and backflow testing requirements

Updated · General information, not legal advice

Massachusetts writes its fire code on NFPA 1 rather than the International Fire Code. It also has some of the most specific backflow testing rules in the region. Here is what building owners and facility managers need on their calendar.

Sprinkler ITM: NFPA 25 by way of 527 CMR and 780 CMR

The Massachusetts Comprehensive Fire Safety Code (527 CMR 1.00) is based on NFPA 1, 2021 edition, with state amendments. The building code, 780 CMR 903.6, says sprinkler systems must be inspected, tested, and maintained under 527 CMR and NFPA 25. Under 780 CMR, the building owner is responsible for maintaining all fire protection systems.

Shutting off any part of a sprinkler system requires a written permit from the head of the local fire department (M.G.L. c. 148, § 27A, as referenced in 780 CMR).

Backflow testing under 310 CMR 22.22

Tests must be done by a MassDEP Certified Backflow Prevention Device Tester. Two routine RP tests can't be less than five months apart without approval. On fire protection systems, a Massachusetts-licensed fire sprinkler contractor is responsible for installing, maintaining, and repairing the backflow device. Your water system can require more frequent testing.

DeviceMinimum test frequency
Reduced pressure backflow preventer (RP)Semiannually; once a year if the supply is used less than six months a year
Double check valve assembly (DCVA)Annually
Failed or defective deviceRepaired or replaced and retested within 14 days

Calendar for a typical building

  • Quarterly: NFPA 25 alarm and gauge inspections.
  • Every 6 months: RP backflow test, if you have an RP device.
  • Annually: NFPA 25 annual inspection and main drain test; DCVA backflow test.
  • Every 5 years: internal piping assessment and check-valve inspection.

Note

Frequencies below summarize recent editions of NFPA 25. Your jurisdiction may enforce an older or newer edition, and your insurer or the authority having jurisdiction (AHJ) can require more. Treat this as a checklist to discuss with your contractor, not as legal advice.

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Sources

  1. Mass.gov, Massachusetts Fire Code (527 CMR 1.00, based on NFPA 1 2021)
  2. 780 CMR 903.6, Massachusetts Building Code (9th edition), inspection, testing and maintenance
  3. 310 CMR 22.22, Cross Connections Distribution System Protection (MassDEP)
  4. MassDEP, Cross-Connection Control Program Manual
  5. NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems (NFPA)

NFPA standards are available to read free online from NFPA. Requirements depend on the edition your jurisdiction adopts; confirm with your authority having jurisdiction.

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