UPI controller for water ATMs
Customers pay for an exact volume with any UPI app, and the controller dispenses it automatically.
THE CHALLENGE
Coin slots jam, and operators rarely know what a machine sold
Water ATMs sell safe drinking water by the litre in villages, towns, stations and bus stands, often for ₹1 to ₹10 a fill. Coin slots jam and get broken into, prepaid cards get lost, and operators rarely know how much a machine sold or when it stopped working.
WHAT IT DOES
What it does for you and your customers
RNDSquare designs the water ATM controller with flow meter input, solenoid and pump outputs, and a QR display with buttons for common volumes such as 1 litre, 5 litres or a 20-litre can. Coin and RFID card inputs can stay on the same controller, and tank level, TDS and UV lamp inputs keep an eye on water quality. We also build the application support: per-litre pricing, quality and uptime alerts, and reports by village, ward or district for panchayat, municipal and CSR programmes.
Accept UPI from any app
Even a ₹1 fill can be paid by UPI.
Sound confirmation
The machine announces the payment before the water starts.
Instant refund on service failure
If water is not dispensed after payment, the customer is refunded automatically.
Hosts receive payments within 24 hours
Operators, panchayats and societies get the day’s collections the next day.
Full application development
Litres sold, water quality, tank and filter alerts are tracked for every machine.
AT A GLANCE
Water ATM controller in brief
- Inputs
- Flow meter, tank level, TDS and UV lamp, plus coin and RFID card
- Outputs
- Solenoid and pump
- Customer side
- QR display with buttons for 1 litre, 5 litres or a 20-litre can
- Pricing
- Per litre, from ₹1 a fill
- Reports
- By village, ward or district for panchayat, municipal and CSR programmes
UPI APPLICATIONS
Other machines we add UPI to
- UPI payment module for DC fast chargers
- UPI payment module for AC EV chargers
- UPI payments for 2W, 3W and e-rickshaw charging points
- UPI payment for parking boom barriers
- UPI controller for milk ATMs and liquid dispensers
- UPI payment system for vending machines
- UPI payment for laundromat machines
- UPI payment for smart lockers
- UPI payment for self-service kiosks
FAQ
Questions buyers ask us
Can a water ATM accept UPI for a ₹1 fill?
Yes. Even a ₹1 fill can be paid by UPI. The customer picks a volume, pays from any UPI app, and the controller dispenses that volume automatically.
Can the existing coin and card payments stay?
Yes. Coin and RFID card inputs can stay on the same controller alongside UPI.
How does the operator know the water is safe?
Tank level, TDS and UV lamp inputs on the controller keep an eye on water quality. The application sends quality, tank and filter alerts for every machine.
What happens if the water ATM fails after the customer pays?
If water is not dispensed after payment, the customer is refunded automatically.
Building water ATMs that should accept UPI?
Book a technical review. We will look at your dispensing hardware and sensors, and plan the controller with you.