A PLAIN GUIDE TO TAP WATER
What’s in your water, and what you can do.
Short, sourced guides. Start with your local water report, then pick the topic you care about.
THE GUIDES
Thirteen topics.
Your water report, explained
carcinogenfreewater.com →What the Safe Drinking Water Act covers
carcinogenfreewater.org →Filter certifications, explained
carcinogenfreewater.net →PFAS rules as of 2026
carcinogenfreewater.info →Private wells
carcinogenfreewater.us →Lead in tap water
cfreewater.com →Arsenic
cfreewater.org →Nitrate
cfreewater.net →Disinfection byproducts
cfreewater.info →Reverse osmosis
cfreeh20.com →Activated carbon
cfreeh20.org →Chromium-6
cfreeh20.net →Testing your water
cfreeh20.info →FIRST STEP
Know what you have.
If you are on city water, your utility publishes a yearly water quality report. If you have a private well, nobody tests it but you. Either way, start there.
IN THE SHOWER
From the EESystem store.
The EESystem store, ees.shop, sells a 15-stage shower filter for $80. For any filter, ask which NSF/ANSI standard it is certified to.
SOURCES
Where these facts come from.
QUESTIONS
Straight answers.
Is my tap water safe?
Your utility’s yearly water quality report shows what was found and how it compares with EPA limits. Private wells have to be tested by the owner.