How MyWaterFacts works

Methodology

MyWaterFacts explains public water information in plain English. We focus on sources, confidence, limitations, and homeowner usefulness.

Purpose

MyWaterFacts helps homeowners, renters, movers, and home buyers understand local water. The goal is not to replace a utility, regulator, certified lab, plumber, or water-treatment professional. The goal is to make public water information easier to find and understand.

How Water Profiles are built

Each Water Profile combines public utility information, annual water quality reports, source-water context, water hardness information where available, and practical homeowner guidance. Profiles should show what is known, what is estimated, and what remains uncertain.

Water Facts Score

The Water Facts Score measures data availability and usefulness. It is not a water safety rating. A high score means public information is easier to find, more current, and more complete for that location.

RangeMeaning
90–100Excellent data availability
75–89Strong data availability
60–74Moderate data availability
Below 60Limited data availability

Confidence levels

Profiles use confidence labels to avoid fake precision. High confidence means direct official sources are available. Medium confidence means public information exists but some fields require regional or secondary interpretation. Low confidence means the profile is a starting point only.

What MyWaterFacts cannot tell you

Public data does not test the water at your specific faucet. Plumbing, building age, service lines, private wells, treatment equipment, and provider boundaries can affect what reaches your tap.