WATERFLOW ALARM (LOC)
Btwn E RANDOLPH ST & W RANDOLPH ST
E46
Dispatched 2:01 AM
Cleared4 of 7 priors were alarm activations · no actual fires
Dispatch
ZONED 23 HIGH AIR WATERFLOWW/N
Caller: 430 CMS (888-289-2800)
Temp
44°F
Wind
6 NW
Conditions
Clear
Humidity
85%
Prior Calls at This Address (7)
4 of 7 priors were alarm activations · no actual fires
Read off the 3D
Roof about 34 ft up, collapse zone 51 ft
Structure runs past the sampled area; footprint and far sides not read
Water Supply
W
45 North Main Street New Hope
At corner of N. Main St. and W. Randolph St.
SE
99 East Randolph Street New Hope
At dead end of E. Randolph St. Behind bushes in small public park space.
Size-Up Reference
Zone: D 23 HIGH AIR WATERFLOWW/N
Wind: 6mph NW
Dark — portable lighting needed
Access: 0034
7 prior calls at this address
Hydrant 36 — 125ft SE
At dead end of E. Randolph St. Behind bushes in small public park space.
Structure
Wood Frame Residential Dwelling
Occupancy
Residential
Footprint
6,765 sq ft
Construction
Wood Frame
Access
0034
🚨 Incident Snapshot
moderateWaterflow alarm activation
Multi-use commercial building (spa, clothing, retail)
Pattern of nuisance alarms — 4 prior activations since 2019
⚠️ Primary Risk Signals
Nuisance alarm history
4 prior false activations in 5 years
Confirm actual fire conditions on arrival — do not assume system malfunction without verification
Prior water leak (12/2020)
System may have residual moisture or sensor sensitivity
Check sprinkler heads and valve area for active discharge or pooling
Multiple occupancies
Spa + retail mix = different fire loads and hydrant access zones
Confirm which zone is alarming and where occupants are staging
🌬️ Environmental Conditions
Clear, 44°F, light northwest wind
No weather-driven fire spread concerns
✔️ Confirm on Arrival
Alarm zone
Which zone is reporting — spa, retail, or both
Waterflow source
Active discharge from sprinklers or false sensor activation
Occupant status
Confirm evacuation and accountability in multi-tenant space
Fire conditions
Smoke, flame, odor, or equipment malfunction — prioritize actual fire ruling out
🧠 Common Causes
Pressure surge or water hammer in old sprinkler system
Sensor moisture from prior leak — residual sensitivity
Occupant activity triggering accidental discharge