Reader-supported

Help everyone know what's in their water.

CityH2O is free for everyone. Your support pays for data work, new city profiles, the daily news feed — and certified lab tests for households that can't afford one.

Choose your support

Frequency

🔁 Monthly1️⃣ One-time

Amount (USD)

$10Keeps a tool online $25Adds a city profile $75Funds a lead test $250Funds a full well test

Or another amount

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Name

Email (for your payment link & receipt)

Payments are processed by a secure third-party processor; CityH2O never sees or stores card numbers. CityH2O is not a registered charity, so contributions are not tax-deductible.

Where your money goes

2027 goal

100 free water tests

For families with infants, pregnant members or confirmed lead service lines.

Campaign launched November 2026 — be one of the first supporters.

🧪
Water tests for familiesCertified lab tests for households that can't afford one.
🗺️
More cities, better dataResearch time to add and refresh city profiles.
🏆
Community prizesFunding the Tap Water Heroes Award and student science prizes.
📣
Outreach & promotionGetting plain-English water info to the neighbourhoods that need it most.
👩‍💻
Hiring talentPaying writers, researchers and video creators fairly.

Other ways to help

Share a guide with a neighbour, send us a correction, nominate a water hero, or sponsor a city page.

Choose your support

Not sure what's in your glass?