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Manchester, NH Water Quality Report

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Sources Of Drinking Water in Manchester, New Hampshire

Where does Manchester's water come from? For more than 145 years, Lake Massabesic has served as the water supply for Manchester and portions of six surrounding communities. In order to satisfy stringent state and federal drinking water regulations, the lake water is purified at Manchester's Water Treatment Plant. The facility was completed in 1974 and has since been routinely updated with state-of-the-art equipment to improve quality control and operational efficiency and was significantly upgraded in 2006. Located adjacent to Lake Massabesic, the plant treats all of the City's water before it is pumped into a 500+ mile piping network for distribution to homes and industries.

The plant has a maximum hydraulic capacity of 50 million gallons per day and presently delivers in excess of 17 million gallons per day to approximately 160,000 consumers in the greater Manchester area. Manchester's modern treatment facility has been designed to treat a wide range of water quality problems to ensure that the customer receives the best possible drinking water. Is Manchester's water safe to drink? Does Manchester put fluoride in the water? 

Source: City of Manchester, New Hampshire

Contaminants Found in Manchester's 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.

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.

Radiological contaminants   

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

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 — moreso 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 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 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 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 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.

Contaminant Levels in Manchester, NH Compared to Other Regions

Bromodichloromethane

- Health Guideline: 0.06 ppb

 - State: 0.485 ppb

 - Manchester, NH: 1.20 ppb

 - National: 4.38 ppb

Chloroform

 - Health Guideline: 1.0 ppb

 - State: 1.30 ppb

 - National: 11.4 ppb

 - Manchester, NH: 1.20 ppb

Chromium (hexavalent)

 - Health Guideline: 0.02 ppb

 - Manchester, NH: 0.0598ppb

 - State: 0.0755 ppb

 - National: 0.782 ppb

Dibromochloromethane  

 - Health Guideline: 0.1 ppb

 - State: 0.339 ppb

 - National: 3.01 ppb

 - Manchester, NH: 0.500 ppb

Total trihalomethanes (TTHMs)

 - Health Guideline: 0.8 ppb

 - State: 2.32 ppb

 - National: 23.4 ppb

 - Manchester, NH: 3.15 ppb

Radiological contaminants  

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

Fluoride

 - Health Guideline: None

 - State: 0.551 ppb

 - National: 23.4 ppb

 - Manchester, NH: 0.610 ppb

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April Jones

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

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