Guides, tools, and reference pages
Use these pages when a city profile is not enough and you need help interpreting reports, hardness, testing, contaminants, or methodology.
Corrections Policy
Read the guide.
Data Sources
Read the guide.
Editorial Policy
Read the guide.
Fluoride in Drinking Water
Read the guide.
Hardest Water Cities in the MyWaterFacts Dataset
Read the guide.
How to Read a Water Quality Report
Read the guide.
How to Test Tap Water
Read the guide.
Lead in Drinking Water
Read the guide.
Nitrates in Drinking Water
Read the guide.
PFAS in Drinking Water
Read the guide.
Provider Matching Methodology
Read the guide.
Water Filter vs Water Softener
Read the guide.
Water Hardness Converter
Read the guide.
Water Hardness Data Methodology
Read the guide.
Water Hardness Scale
Read the guide.
Water Hardness by City
Read the guide.
Water Softener Sizing Calculator
Read the guide.
Water test checklist
Read the guide.
What Is Hard Water?
Read the guide.
Hardest Water Cities in America
Compare hard-water city examples, softener considerations, and provider-specific caveats.
What Is Water Hardness?
A plain-English guide to water hardness, calcium and magnesium, grains per gallon, ppm, scale, and what homeowners should check.
Hard Water vs Soft Water
Compare hard water and soft water in practical homeowner terms: scale, soap, appliances, softeners, and what to test before buying equipment.
How to Read a Water Quality Report
Learn how to read a utility water quality report, what it can tell you, and what it cannot tell you about your exact faucet.
How to Find Your Water Provider
A practical guide to finding the water provider for a home, apartment, or business before relying on a city water profile.
Do You Need a Water Softener?
A homeowner-focused guide to deciding whether a water softener makes sense based on hardness, symptoms, provider context, and testing.
Hard Water and Water Heaters
Scale, maintenance, and treatment decisions around water heaters.
Hard Water and Dishwashers
Spots, cloudy glasses, and what to test before buying equipment.
Hard Water and Laundry
Detergent performance, fabric feel, and hardness testing.
Hard Water and Shower Glass
White spots, film, and when hardness is likely involved.
Water Softener Maintenance Basics
Salt, settings, bridging, and basic ownership checks.
Water Softener Salt Guide
Pellets, crystals, salt bridges, and salt-use troubleshooting.
How Long Does a Water Softener Last?
Repair, replacement, lifespan factors, and maintenance clues.
Signs You Need a Water Softener
Hard-water clues, testing, and when treatment makes sense.
Common Water Softener Problems
Hard water returning, salt issues, leaks, and first checks.
More reference pages
Contaminants
Read plain-English pages about lead, PFAS, fluoride, nitrates, and related water concerns.
Water glossary
Look up common water report and treatment terms.
Methodology
See how MyWaterFacts handles sources, provider matching, confidence, and hardness data.
Corrections policy
How to send source updates or corrections.
Affiliate disclosure
How advertising or affiliate links may be handled.
Copyright policy
Copyright and content ownership information.
State pages
Browse available state-level water and hardness guides.
Official-source city profiles
All reviewed city profiles now include an official-source check. These checks link to utility, city, provider, or agency pages used for report and provider context.