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Roanoke, VA Water Quality Report

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Sources Of Drinking Water in Roanoke, Virginia

Where does Roanoke get its water from?  Roanoke utilizes five surface water sources and multiple springs and wells as drinking water sources.  Having an abundant supply of water helps protect against drought or other emergencies.  The Authority is in full compliance with all state and federal monitoring and requirements and is pleased to deliver an excellent product and superior service. Is Roanoke's water safe to drink?

Source: City of Roanoke, Virginia

Contaminants Found in Roanoke's Water Supply

(Detected above health guidelines)

Arsenic

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

Benzene

Benzene is a known human carcinogen. It also damages blood cells and the nervous system. Emissions from petroleum processing, hazardous waste landfills and underground storage tanks contaminate drinking water with benzene.

 

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. Read more about chromium (hexavalent).

Radiological Contaminants

This utility detected Radium, combined (-226 & -228), Radium-226, Radium-228 & Uranium.

Total Trihalomethanes (TTHMs)

Trihalomethanes are cancer-causing contaminants that form during water treatment with chlorine and other disinfectants. The total trihalomethanes group includes four chemicals: chloroform, bromodichloromethane, dibromochloromethane and bromoform. 

Fluoride

Fluoride occurs naturally in surface and groundwater and is also added to drinking water by many water systems. The fluoride that is added to water is not the naturally occurring kind, the main chemicals used to fluoridate drinking water are known as “silicofluorides” (i.e., hydrofluorosilicic acid and sodium fluorosilicate). Silicofluorides are not pharmaceutical-grade fluoride products; they are unprocessed industrial by-products of the phosphate fertilizer industry (Gross!). Since these silicofluorides undergo no purification procedures, they can contain elevated levels of arsenic — more so than any other water treatment chemical. In addition, recent research suggests that the addition of silicofluorides to water is a risk factor for elevated lead exposure, particularly among residents who live in homes with old pipes.

Potential Health Effects of Consuming These Contaminants

Health risks of Arsenic in excess of the health guidelines

Cancer: The health guideline of 0.004 ppb for arsenic 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 Benzene in excess of the health guidelines 

Cancer: The health guideline of 0.15 ppb for benzene 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 Chromium (hexavalent) in excess of the health guidelines

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 Radiological contaminants in excess of the health guidelines

Cancer: Radiological contaminants leach into water from certain minerals and from mining. Drinking water contamination with radioactive substances increases the risk of cancer and may harm fetal development.

Health risks of Total trihalomethanes (TTHMs) in excess of the health guidelines 

Cancer: The health guideline of 0.8 ppb for trihalomethanes was defined by the California Office of Environmental Health Hazard Assessment as a draft public health goal, the level of drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

Health risks of Fluoride in excess of health guideline  

No standards exist for fluoride in water but fluoride is considered by many to be a neurotoxin.

Contaminant Levels Compared to Other Regions

Arsenic

 - Health Guideline: 0.004 ppb

 - National: 1.33 ppb

 - State: 0.182 ppb

 - Roanoke, VA: 0.232 ppb

Benzene

 - Health Guideline: 0.15 ppb

 - Roanoke, VA: 0.226 ppb

 - National: 0.00132 ppb

 - State: 0.000455 ppb

Chromium (hexavalent)

 - Health Guideline: 0.02 ppb

 - National: 0.782 ppb

 - State: 0.120 ppb

 - Roanoke, VA: 0.148 ppb

Radiological Contaminants

 - No drinking water standard exists for these contaminants.

Total trihalomethanes (TTHMs)

 - Health Guideline: 0.8 ppb

 - State: 27.9 ppb

 - National: 23.4 ppb

 - Roanoke, VA: 43.1 ppb

Fluoride

- Legal Limit: 4 ppb

 - State: 0.692 ppb

 - National: 0.440 ppb

 -  Roanoke, VA: 0.648 ppb

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April Jones

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

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