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Water Station: Production, Sales and Cost Per Litre

A trade app that tracks litres produced, litres sold and the consumables between them, so cost per litre is a fact rather than an estimate.

Q
Quinton
9 Sep 2026

A water station's costs are almost entirely in processing, and processing costs are invisible unless someone counts them against output.

What the app is built around

Litres. Produced, sold, delivered, and lost — with the consumables and power that produced them recorded alongside.

What it helps you see

  • Cost per saleable litre, which is the only cost that matters
  • Production against sales, so the gap between them is visible
  • Consumable life — filters and membranes measured in litres processed, not months
  • Refill against delivery, which have different economics
  • Container tracking, where you supply them

Where it changes a decision

When to change a filter. Replacing on a calendar wastes money; replacing on litres processed protects both cost and quality. That is only possible if throughput is recorded.

What it is not

It does not test your water. Quality testing is a separate discipline and remains yours to run.

Price and fit

Water Station is $25 a month on Knomart, and your monthly total is the sum of the apps you install.

It suits a station selling both over the counter and on delivery, or one where the power bill has grown faster than sales. It is also useful to a station preparing for a quality audit, because the production and consumable records an inspector asks for are the same ones the business needs anyway.

Stations that deliver as well as sell over the counter often add Courier / Last-mile at $25 a month for route and delivery records. Others add Daily Takings at $6 where the aim is just a clean daily close. You pay for what you install and nothing else.

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