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Grand Prairie Water Quality Report

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Sources Of Drinking Water in Grand Prairie, Texas

The City of Grand Prairie purchases most of its water from Dallas and Fort Worth. Of the purchased water, 90% comes from Dallas while the remaining portion comes from Fort Worth and services the northwest portion of town. During most summers, the city has to turn on its groundwater wells to keep up with the demand brought about by warm weather. These wells typically service the areas of town that are within a 1–2 mile radius. 

 The water that Fort Worth delivers to Grand Prairie is taken from lakes Benbrook, Bridgeport, Eagle Mountain, and Worth and the Cedar Creek and Richland-Chambers Reservoirs. Dallas treats water from the Elm Fork of the Trinity River and lakes Ray Roberts, Lewisville, Grapevine, Ray Hubbard and Tawakoni. 

Source: City of Grand Prairie

Contaminants Found in Grand Prairie's Water Supply

(Detected above health guidelines)

Hormones

Hormones in drinking water come from human and animal wastewater discharged into drinking water sources. Conventional drinking water treatment does not remove hormones.

 

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.

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.

Dibromochloromethane

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water.

Dichloroacetic acid

Dichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

Radiological contaminants 

Radiological contaminants leach into water from certain minerals and from mining. This utility detected Radium, combined (-226 & -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.

Trichloroacetic acid

Trichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

Source: https://www.ewg.org

Potential Health Effects of Consuming These Contaminants

 

Health risks of hormones in excess of health guideline

Unknown: This utility detected 4-Androstene-3,17-dione. Hormones in drinking water come from human and animal wastewater discharged into drinking water sources. Conventional drinking water treatment does not remove hormones.

Health risks of bromodichloromethane in excess of health guideline

Cancer: The health guideline of 0.4 ppb for bromodichloromethane was defined 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 in excess of health guideline

Cancer: The health guideline of 1 ppb for chloroform was defined 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 chromium (hexavalent) in excess of health guideline

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 dichloroacetic acid in excess of health guideline

Cancer: The health guideline of 0.7 ppb for dichloroacetic acid was defined by the Environmental Protection Agency 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 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.

Health risks of trichloroacetic acid in excess of health guideline

Cancer: The health guideline of 0.5 ppb for trichloroacetic acid was defined by the Environmental Protection Agency 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

Birth defects: Drinking water contamination with radioactive substances increases the risk of cancer and may harm fetal development.

Health risks of dibromochloromethane  in excess of health guidelines

Cancer & Birth Defects: Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

Source: https://www.ewg.org

Contaminant Levels in Grand Prairie, Texas Compared to Other Regions

Bromodichloromethane

 - Health Guideline: 0.4 ppb

 - State: 4.29 ppb

 - Grand Prairie, TX: 6.87 ppb

 - National: 4.37 ppb

Chloroform

 - Health Guideline: 1.0 ppb

 - State: 6.64 ppb

 - National: 11.4 ppb

 - Grand Prairie, TX: 9.57 ppb

Chromium (hexavalent)

 - Health Guideline: 0.02 ppb

 - Grand Prairie, TX: 0.179 ppb

 - State: 0.265 ppb

 - National: 0.782 ppb

Dichloroacetic acid

 - Health Guideline: 0.7 ppb

 - State: 6.35 ppb

 - National: 6.00 ppb

 - Grand Prairie, TX: 12.3 ppb

Total trihalomethanes (TTHMs)

 - Health Guideline: 0.8 ppb

 - State: 25.8 ppb

 - National: 23.4 ppb

 - Grand Prairie, TX: 22.6 ppb

Trichloroacetic acid

 - Health Guideline: 0.5 ppb

 - State: 3.33 ppb

 - National: 4.93 ppb

 - Grand Prairie, TX: 2.64 ppb

Hormones 

Human sex hormones are sometimes detected at low concentrations in drinking water. There are no current health guidelines to determine whether these exposures are safe, or if they could pose a risk to human health.

Radiological contaminants  

No information available about this contaminant but it cannot be good. This utility detected Radium, combined (-226 & -228).

 

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Jason Nash

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

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