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Cincinnati Water

Where Cincinnati's Water Comes From (and Why It Matters)

April 23, 2026·5 min read

Most Cincinnati homes get water from one of two sources: the Ohio River (via Greater Cincinnati Water Works) or the Great Miami Aquifer (via the Bolton Treatment Plant for some western suburbs).

Why Source Matters

**River water** carries seasonal sediment, agricultural runoff, and whatever upstream cities discharge. It requires heavy treatment — coagulation, sedimentation, filtration, ozone, granular activated carbon, and chloramine disinfection.

**Aquifer water** is cleaner at the source but carries higher dissolved minerals, meaning harder water.

**Well water** (rural Loveland, Indian Hill estates, parts of Anderson Township) is highly variable. Iron, sulfur, sediment, and hardness all show up depending on the local geology.

What This Means for Your System

We install the same flat-priced city-water package across Greater Cincinnati. For well-fed homes (rural Loveland, Indian Hill, parts of Anderson), we step up to a well-water package that handles iron and sulfur. Either way, the install takes a day.

Call us, tell us your address, and we'll confirm which package fits your home.

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Source: EWG Tap Water Database, Ohio + Greater Cincinnati Water Works. EWG's database includes results of tests conducted by Cincinnati-area water utilities and provided to EWG by the Ohio EPA. Data shown covers 2013–2026.

Disclaimer: The lookup tool is for informational purposes only. It summarizes findings reported across Cincinnati-area water systems. Your exact water may vary by utility, plumbing condition, well status, and local conditions. For exact results, check your utility's annual water quality report, look up your utility on EWG, or request a current water test.

Honest Water Ohio is not affiliated with EWG or Greater Cincinnati Water Works. These public data sources are cited for educational purposes only and do not replace a water test, utility report, or professional water analysis.

Honest Water Ohio is not affiliated with, endorsed by, sponsored by, or officially connected to Meta Platforms, Inc., Facebook, or Instagram. Facebook and Instagram are trademarks of Meta Platforms, Inc.

Pricing, promotions, financing, and installation details may vary based on home size, water quality, selected system, and approval where applicable.

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