About

Resin Ledger helps U.S. homeowners make water softener decisions from evidence they can check: water test results, units, household water use, performance data, certification listings, model manuals, settings records, and maintenance history.

Our guiding sequence is simple: measure, size, set, verify.

Why this site exists

Water softener advice often separates a number from the conditions that make it meaningful. A grain-capacity label may omit its salt dose. A hardness setting may omit the sample point or unit. A controller tutorial may show buttons for another model. A symptom list may jump directly to an internal repair.

Resin Ledger is designed to keep those connections visible. Our worksheets and calculators preserve sources, units, assumptions, prior values, and validation results. When the evidence is incomplete or the task belongs to a qualified professional, the page says so.

Who runs Resin Ledger

Resin Ledger is a small independent site. Articles are published under the Resin Ledger name rather than a personal byline, and we do not list credentials or reviewers that we cannot show. You can reach the person who runs the site at the address on our Contact page.

How our content is prepared

We begin with primary sources whenever possible, including government guidance, official standards information, certification databases, performance data sheets, and exact manufacturer manuals. Calculations include visible formulas and test cases. Model-specific instructions stay attached to the cited model.

We use AI-assisted tools for outlining, drafting, consistency checks, and calculation QA. Every number, safety limit, and model-specific instruction on a page is logged against the source that supports it, with the date it was checked, and each calculator is tested against a fixed set of worked cases. We do not present AI output as a physical test, personal experience, professional diagnosis, or expert review. Some articles include photos taken by other people and published under Creative Commons or public-domain terms; each one names its author, source and license in its caption, and none is presented as our own equipment.

What we do not claim

Unless a page explicitly documents otherwise, product details come from manufacturer documents and official certification listings, not from our own testing, and we do not rank or endorse brands. The site does not determine whether water is potable, replace an exact manual or local requirements, or provide electrical, plumbing, medical, legal, or professional water-treatment services.

How the site may be funded

Resin Ledger currently does not display ads or use affiliate links.

Compensation must never determine measurements, formulas, safety boundaries, source selection, or conclusions.

Contact and corrections

Questions, source challenges, and correction requests are welcome through our Contact page. Material corrections are handled under our Corrections Policy.