St. John, USVI

See water status early.
Schedule service before it turns urgent.

Live water level, draw rate, leak detection, and instant alerts — all on your phone, from anywhere on the island or off it.

stj-cisterns-live.web.app/app
Sea Glass Villa — Main House
1h Today Week
Water level (inches)
Level
48.2in
Gallons
7,230
Draw Rate
0.8g/m
Status
OK
54% FULL
Cistern healthy — est. 28 days remaining at current usage
9:41
STJ LIVE CISTERNS now
⚠ Cistern A — Critical
Level dropped 4 in in 2 hrs. Draw rate 1.4 g/min. Check system.
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Why It Works

Remote. Early. Fast.

Remote / Water Visibility
Water Visibility
Check gallons, fill percent, and trend without visiting the site.
Early / Low-Water Signal
Low-Water Signal
Catch falling reserves before guests, staff, or turnovers feel it.
Fast / Next-Step Decisions
Next-Step Decisions
See whether to monitor, plan a fill, or request water now.

Water intelligence
for island living.

STJ Live Cisterns puts a sensor in your tank and a live dashboard on every device you own. Check water depth in inches and gallons in real time — no guessing, no walking to the tank, no surprises when the pump runs dry.

The system watches draw rate continuously. If water is leaving faster than it should — faster than any normal household use pattern — it flags it before the cistern empties. That's the difference between a minor leak and a crisis.

Rain is tracked too. When a storm rolls through, you'll see exactly how much made it into the tank, calibrated for your roof catchment area. Every drop accounted for.

Two clear paths.

One property or a full portfolio — the portal works for both.

Single Property
Residential Monitoring
Start with a simple answer: is the property healthy, getting low, or ready for service? The portal keeps the signal practical so owners can act early without turning water level into a manual chore.
  • Live alerts surface low-water conditions early
  • Remote monitoring shows gallons, percent full, and trend without visiting the site
  • One property view keeps every cistern and next step on the same page
Best fit for homeowners, rental owners, and single-villa operators who want to act before reserves get tight.
What We Offer

Full-service cistern
care for St. John.

From sensor installation to water delivery, we handle every part of keeping your tank healthy and your property running.

Draw Rate Monitoring
Continuous gal/min tracking so you always know how fast the tank is moving — and catch anomalies before they become failures.
Leak Detection
Automated pattern analysis flags unusual draw rates between known usage windows, surfacing leaks you'd never see otherwise.
Rain Tracking
Live rainfall data calibrated to your roof catchment area — see exactly how much each storm added to your reserves.
Instant Alerts
Push notifications when levels drop critically low, draw rates spike, or the pump runs dry — so you know before guests do.
Sensor Installation
Professional install of the ultrasonic sensor module, wiring, and connectivity setup — handled start to finish.
Thoroseal Waterproofing
Interior cistern waterproofing applied by certified professionals to stop seepage and protect your water quality.
Pump Service
Inspection, maintenance, and replacement of cistern pump systems — coordinated with live data so nothing gets missed.
Cistern Cleaning
Scheduled deep-clean service to remove sediment, algae, and buildup — keeping your stored water safe and your sensor accurate.
Water Delivery Coordination
When your cistern runs low, we coordinate truck delivery and log the fill event directly in your dashboard history.
Villa & Property Management
Remote oversight for vacation rentals and estate properties — daily status checks, guest turnover monitoring, and owner reporting.
9:41 ▲ ● ▌▌

Know the moment something changes.

When the tank drops unexpectedly, when draw rate climbs past a threshold, or when a pump runs dry — you get a push notification immediately, not when a guest calls to report no water.

Alerts are calibrated to your property's normal patterns, so you get fewer false positives and faster response to real events.

How It Works

Three steps to full visibility.

01
Install
We mount an ultrasonic sensor module in your cistern — weatherproof, battery-backed, and connected to your property's WiFi. The install takes a few hours and requires no modification to your tank.
02
Monitor
Readings come in continuously. The dashboard shows live level, volume in gallons, draw rate, rain accumulation, and trend history — updated every few seconds, visible from any device, anywhere.
03
Act
When something changes — a leak, a low tank, a missed delivery — you know first. Schedule service, coordinate a water truck, or call your property manager with exact data in hand instead of guesswork.