About this site

This site explains home water treatment with numbers you can check: official limits from the EPA and Health Canada, NSF/ANSI certifications and manufacturer specifications. It starts with private wells, the problems owners actually search for, from orange stains to a rotten egg smell, and will grow to whole-house treatment, reverse osmosis and drinking water contaminants.

Who writes it

The guides are researched and written by Doffy, an independent writer based in Quebec, Canada. The author publishes under a pen name. We are not plumbers or water treatment dealers, and we do not sell equipment.

What the guides are based on

Every guide cites its sources at the bottom of the page and says what we checked and what we did not. We have not lab-tested the products we cover. When a claim matters for your health, such as lead or bacteria, we point you to the official guideline and to a certified lab test, not to a product first.

Why US and Canadian units

Labs and cities in the United States report in ppm and grains per gallon. Canadian labs and Health Canada use mg/L. Every page lets you switch units, so the numbers match your own test report.

How the site is funded

Through affiliate commissions only, once we join affiliate programs. See our affiliate disclosure and how we research.