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Hamilton, Ohio Water Quality Report


Sources Of Drinking Water in Hamilton, Ohio

Where does Hamilton get its water from?  The City of Hamilton has owned and operated its own water utility since 1884. Today, the Water System, including production and distribution, is a part of the City's Department of Underground Utilities. The City begins by drawing its raw water from the Great Miami Valley Buried Aquifer. Using 21 deep wells, the City extracts water from the aquifer and then treats the water using a unique chlorine dioxide disinfectant process. 

The City processes raw water from the aquifer at two water treatment plants.  The underground distribution infrastructure of the Water System currently consists of over 289 miles of water mains throughout and in areas adjacent to the City. The City provides, on average, over 18.5 million gallons of water per day (MGD) to approximately 25,000 customers in Hamilton and portions of Butler County. Is Hamilton's water safe to drink? Does Hamilton put fluoride in its water?

Source: City of Hamilton, OH

Contaminants Found in Hamilton, Ohio's Water Supply

(Detected above health guidelines)

Chromium (hexavalent)

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater.


Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. 

Potential Health Effects of Consuming These Contaminants

Health risks of Chromium (hexavalent) above health recommendations

Cancer:  The health guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

Health risks of Nitrate above health recommendations

Cancer:  The health guideline of 0.14 ppm for nitrate was defined in a peer-reviewed scientific study by EWG and corresponds to one-in-one-million annual cancer risk level.  Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer.

Contaminant Levels in Hamilton, OH Compared to Other Regions

Chromium (hexavalent)  

 - Health Guideline: 1.0 ppb

 - National: 11.4 ppb

 - Hamilton, OH: 0.330 ppb


 - Health Guideline: 0.14 ppb

 - National: 1.01 ppb

 - Hamilton, OH: 0.592 ppb

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April Jones

A Colorado based hiker, blogger, and water quality expert...

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