Household water guides
Water
guides that help
Use these articles to understand hardness levels, compare treatment options, and avoid overbuying equipment you do not need.
Level A
Guide Mar 2026
US Water Safety: Chlorine and Disinfection Byproducts
How to identify and remove municipal chlorine and its toxic byproducts (THMs). Technical analysis for safe drinking water.
Read guide
Level D
Guide Mar 2026
Technical Protocol: Managing Severe Water Hardness (Level D)
Clinical guidelines for households with water hardness exceeding 180 PPM. Professional remediation for pipes, appliances, and skin health.
Read guide
Need the local picture
before buying anything?
Start with a ZIP-code page first, then use the guides only when you need more context on treatment, maintenance, or symptoms.