When do I need to request a water test from Washington Suburban Sanitary Commission (WSSC) with my automatic sprinkler system?
All plans that require hydraulic calculations must verify all water supplies. All new buildings and additions require that the water test be provided from Washington Suburban Sanitary Commission (WSSC). Learn more information on the Automatic Sprinkler System page.

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1. Do I need a permit if I am modifying less than 10 sprinkler heads?
2. Do you review plumbing drawings?
3. What are the fees for a fire alarm or sprinkler system?
4. What are the current editions being used for applicable NFPA standards?
5. What is the maximum distance allowed from the fire department connection to the nearest fire hydrant?
6. How do I schedule a Fire Inspection?
7. Do single family homes (one- and two-family dwellings) require automatic sprinklers?
8. Do I need to file plans for a sprinkler monitoring system?
9. Do I need to file fire alarm shop drawings to change a fire alarm panel?
10. What adjustment to the water supply is required?
11. When do I need to request a water test from Washington Suburban Sanitary Commission (WSSC) with my automatic sprinkler system?