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Clarksville Water Quality Report

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Sources Of Drinking Water in Clarksville, Tennessee

Where does Clarksville get its water from? The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or human activity. Your water, which is surface water, comes from the Cumberland River. Is Clarksville's water safe to drink?

Source: 2017 Clarksville Water Quality Report

Contaminants Found in Clarksville, TN Water Supply

(Detected above health guidelines)

Bromodichloromethane 

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

Chloroform 

Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

Dibromochloromethane

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

Radiological contaminants

This utility detected Radium, combines (-226 & -228), Radium-226 & Radium-228

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. 

Potential Health Effects of Consuming These Contaminants

Health risks of bromodichloromethane contaminants in excess of health guidelines

Cancer: The health guideline of 0.06 ppb for bromodichloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

Health risks of chloroform contaminants in excess of health guidelines

Cancer: The health guideline of 0.4 ppb for chloroform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

Health risks of dibromochloromethane contaminants in excess of health guidelines

Cancer: The health guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

Health risks of Radiological contaminants in excess of 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 trihalomethanes in excess of health guideline

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.

Contaminant Levels in Clarksville, TN Compared to Other Regions

 Bromodichloromethane

 - Health Guideline: 0.06 ppb

- State: 2.81 ppb

 - Clarksville, TN: 4.17 ppb

 - National: 4.38 ppb

Chloroform 

 - Health Guideline: 0.4 ppb

- State: 10.2 ppb

 - National: 11.5 ppb

- Clarksville, TN: 15.0 ppb

Chromium (hexavalent)  

- Clarksville, TN: 0.0638 ppb

 - Health Guideline: 0.02 ppb

- State: 0.127 ppb

 - National: 0.782 ppb

Dibromochloromethane 

- State: 0.658 ppb

Clarksville, TN: 0.771 ppb

 - Health Guideline: 0.1 ppb

 - National: 3.01 ppb

Radiological contaminants

 - No standard exists for these contaminants, which cannot be good.

Total trihalomethanes (TTHMs)

 - Health Guideline: 0.8 ppb

 - Clarksville, TN: 3.84 ppb

 - National: 23.7 ppb

 - State: 26.2 ppb

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Jason Nash

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

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