How WaterSpec Lab makes money
WaterSpec Lab earns affiliate commission when a reader buys a system through our links. It does not change which system we recommend. The sizing logic runs on your test numbers before any product is matched to it, and we publish that arithmetic so you can check it yourself.
What we earn
We participate in affiliate programs run by water treatment manufacturers. When a reader buys a system through one of our links, we receive a percentage of the sale. The reader pays the same price either way.
What that does and does not influence
It does not influence sizing. The System Finder maps your test results to a system class and a capacity figure using published standard scopes and manufacturer specifications. That calculation happens before any product is attached to it, and the arithmetic is shown on screen.
It does influence which brands we can recommend at all. We can only link to brands whose programs accepted us. Where a product we cannot earn on is the better fit, we say so and do not link it.
The concentration rule
We hold relationships with at least three paying brands and act when any single one exceeds half of revenue. A brand that supplies most of your income can change its terms unilaterally, and that pressure eventually shows up in the recommendations. Diversification is an editorial safeguard, not just a commercial one.
Where disclosure appears
On every page that recommends a product, above the first recommendation — not in the footer.
Who this is not for
If you want a recommendation that ignores commercial relationships entirely, this is not that site — and no affiliate site is. What we offer instead is a published method you can audit and re-run against any product on the market.