Know the second anything goes into your pool. Edgewater is a pool alarm that alerts every phone in your house, then sounds a siren if it's a child or a pet.
In development. 10 free installs in San Diego backyards, early 2027.
Example alerts
Edgewaternow
Something went into the pool
The camera is checking what it was.
Edgewaternow
It was the pool cleaner
No siren. A 10-second clip is saved.
One weatherproof box sits at the edge of your pool. A camera on the box checks what went in, so leaves, toys and the pool cleaner don't set off the 110-decibel siren.
See how it works77% of toddlers who drowned in home pools had been out of sight for five minutes or less.
U.S. Consumer Product Safety Commission study of toddler pool drownings in Arizona, California and Florida.
Edgewater alerts every phone in the house the moment anything goes in.
The leading cause of death for U.S. children ages 1 to 4 is drowning.
About 376 children a year under 15 drowned in pools or spas from 2021 to 2023. Nearly 80% were under five.
69% weren't expected to be at the pool at all. They slipped out a door nobody was watching.
Every phone first. Then the siren, for a child or a pet.
The first seconds after something goes into your pool. One weatherproof box at the edge does all of it, with a sensor arm below the waterline and a small night-vision camera above it.
-
The water moves
The sensor arm feels the push of water when something heavy goes in. Wind and rain ripple the surface but barely move the water underneath.
0 s -
Every phone is alerted
Everyone in the household gets an alert before the camera has decided anything. Phone alerts need Wi-Fi.
Right away -
The camera checks
It looks at what went in. The analysis happens on the box, without sending video anywhere.
1 to 2 s -
A child or a pet: the siren goes off
A 110-decibel siren and a flashing light at the pool, until someone responds. It runs on the box, so it works with the Wi-Fi down. A toy, leaves or the pool cleaner gets no siren.
About 2 s -
Can't tell: it watches the water
If the camera isn't sure, Edgewater keeps watching the water for another 8 seconds. If it's still moving hard, the siren goes off.
Watching, 8 sAbout 10 s
A child and a pet get the same full alarm. Toys, leaves and the pool cleaner are the only things it's built to keep the siren off for.
The full walkthroughWind moves the surface. A body moves the water.
The sensor arm hangs below the waterline, where gusts and rain barely reach. It's the same kind of underwater sensing the most trusted pool alarms use, so what sets Edgewater off is a real push of water, not a ripple.
Illustration, not real sensor data. The dashed line marks where an alert starts; the upright line is the sensor's latest reading.
Built around why pool alarms fail families
Drowning is fast and silent
A toddler slips out the back door and nobody hears a thing. Edgewater alerts every phone the moment anything goes in, and sounds a 110-decibel siren at the pool when it sees a child or a pet.
Alarms cry wolf, so people unplug them
Floating alarms go off for wind, rain, toys and pool cleaners. A disarmed alarm protects no one. Our camera filters those out, so the siren is saved for when it matters.
Nobody knows if the alarm still works
Dead batteries and failed sensors go unnoticed until the day it counts. Every morning the app tells you it's armed, charged and passed its self-test.
Two ways to get involved now
Families with a pool
We're installing 10 units free in San Diego backyards in early 2027, for families with young kids or dogs. Start with a 4-minute survey.
About the pilotPool builders and service companies
Families ask you about safety when they get a pool. Pilot a co-branded unit with us and earn $50 for every install.
Partner with usBuilt by two engineers in San Diego
Zoe Hassett designs the hardware. Elias Alamat builds the software and security. We're University of San Diego engineering students building Edgewater one tested piece at a time, starting with the part that has to work every time: the siren.
About us and our roadmap