Prepaid Water Metering
Pay-as-you-go water, managed the smart way.
Prepaid water meters bring the same simplicity to water that prepaid electricity brought to power. Customers top up with an STS token and the meter’s valve controls supply automatically.
Built-in protections — low-credit warnings, hoarding limits, regular valve self-exercise and safe shut-off on low battery — keep meters reliable and revenue secure.
How it works
- 1
Buy credit
The customer purchases water credit and receives an STS token.
- 2
Top up
The token is entered on the meter keypad or on an indoor RF unit.
- 3
Use water
The meter tracks consumption and warns when credit is low.
- 4
Automatic control
The valve closes at zero credit and reopens after top-up.
Benefits
Revenue upfront
Water is paid for before it is used.
Less waste
Customers see their usage and manage it.
Reliable valves
Automatic valve self-exercise every 15 days prevents seizing.
Standards-based
Class B metering to ISO 4064 with STS tokens.
Frequently asked questions
Which pipe sizes are available?
DN15, DN20 and DN25.
Can the valve be controlled remotely?
Yes, with the split PRW-WM-120 and its indoor RF unit.
Talk to us about water metering
Tell us about your site and we’ll design the right solution.
Explore other solutions
Prepaid Electricity Metering
STS prepaid meters that collect revenue upfront and end billing disputes.
Learn moreSmart AMI & 4G Remote Management
Read, manage and control meters remotely over 4G, PLC or RF.
Learn moreVending & Management System
Software to manage customers, tariffs, token sales and payments in one place.
Learn more