Live level
See the percentage any time, to the nearest 1%.
Roof tank · 1,000 L
18%
About 1.5 days left
Refill soon
Water tank monitor for the home
Never run dry. Never drink unsafe.
TankSense clips onto your water tank and tells you the level and flags unusual changes in the water, so the first sign of trouble is a message, not an empty tap.
Three moments when guessing fails.
6:40 am
6:40 am, the shower sputters.
Guessing the level means you learn the tank is low only when the pressure drops.
4:15 pm
4:15 pm, guests arrive and the tap coughs.
Running out at bad moments is the usual cost of a refill you meant to book this week.
9:00 pm
9:00 pm, the water looks fine. Is it?
Water that looks fine may still be unsafe. Clear water can carry contamination, and you cannot judge that by eye.
Three steps. No ladder.
- 1
Clip it on
Clips to the rim of your tank lid in about a minute. No tools, no plumbing, no cables.
- 2
It watches 24/7
Measures level and water quality every few minutes, even when you are away.
- 3
You get alerted
A message on SMS or WhatsApp when the level is low or the water changes. Before the tap runs dry.
Setup takes minutes: clip it on, then choose the phones that get alerts.
Read it like a fuel gauge
Slide to see what you’d see.
Drag the handle on the tank. The number and the message change the way they will on your phone.
18%
Refill soon: about 1.5 days left
Everything the gauge on your dashboard would tell you.
Six readings and alerts, specified the way a dashboard is: what each one shows, and when it speaks up.
Low-water alerts
Set the line. We message you before you cross it.
Water quality warnings
Cloudy, warm or stagnant water gets flagged.
SMS and WhatsApp alerts
Messages go to the phones you choose. No app needed.
Solar or long-life battery
A small solar panel, or a battery built to last for seasons between changes.
Shared household access
Everyone at home sees the same reading and the same alerts.
Fits the tank you already have.
Rooftop, overhead or underground, TankSense mounts without drilling into the tank or changing its plumbing.
Rooftop poly tank
Clips onto the lid rim. Hand tight, about a minute.
Concrete overhead tank
Fixed to the inspection hatch frame with the included bracket.
Underground cistern
Mounted under the manhole cover, with the probe lowered on a short rod.
What we watch in the water.
- Turbidity
- Clear · 1.2 NTU
- Temperature
- 24°C
- Sudden change
- Steady
- Stagnant flag
- Moving
A week on the tank.
This is what one household sees. Level, refills and the messages that came with them.
Tuesday, 5:10 am: refill reminder sent to Maya via WhatsApp
Tuesday, 11:30 am: tank topped up, level back to 90%
Sunday, 8:15 am: level reached 20%, refill alert sent to both phones
Friday: cloudy water flagged, warning sent to both phones
Households it's designed for.
Example voices written to show the kind of household TankSense is for. TankSense is not yet shipping.
“I stopped climbing the ladder to knock on the tank. The message comes before the shower does.”
“Three flats share our cistern. Now everyone sees the same number, and nobody argues about who used it.”
“The water looked fine. The warning said otherwise. I was glad to know before the kettle.”
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Join the waitlist for updates.
82%
Plenty for 6 days