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EWG's Tap Water Database — 2021 UPDATE

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Piedmont Triad Regional

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the North Carolina Department of Environment and Natural Resources, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2021 - March 2021), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

Utility Details

  • Randolph County, North Carolina
  • Serves: 367,681
  • Data available: 2014-2019
  • Source: Surface water

Contaminants Detected

10

EXCEED
EWG HEALTH
GUIDELINES

19 Total Contaminants

  • Legal does not necessarily equal safe. Getting a passing grade from the federal government does not mean the water meets the latest health guidelines.
  • Legal limits for contaminants in tap water have not been updated in almost 20 years.
  • The best way to ensure clean tap water is to keep pollution out of source water in the first place.

Legal ≠ Safe

EWG Health Guidelines fill the gap in outdated government standards.

The federal government’s legal limits are not health-protective. The EPA has not set a new tap water standard in almost 20 years, and some standards are more than 40 years old.

Contaminants Detected

1,4-Dioxane

Potential Effect: cancer6x EWG'S HEALTH GUIDELINE
THIS UTILITY2.10 ppb
EWG HEALTH GUIDELINE0.35 ppb
NO LEGAL LIMIT
DETAILS
X

1,4-Dioxane is a solvent classified by the EPA as a likely human carcinogen. It contaminates groundwater in many states due to industrial wastewater discharges, plastic manufacturing runoff and landfill runoff.

1,4-Dioxane was found at 6 times above EWG's Health Guideline.

EWG Health Guideline

0.35 ppb or less

This Utility

2.1 ppb

National Average

0.0681 ppb

State Average

0.483 ppb
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2019.
ppb = parts per billion

Health Risks

The EWG Health Guideline of 0.35 ppb for 1,4-dioxane 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.

Pollution Sources

industry icon

Industry

urban area icon

Runoff & Sprawl

Filtering Options

reverse osmosis icon

Reverse Osmosis

Bromodichloromethane

Potential Effect: cancer43x EWG'S HEALTH GUIDELINE
THIS UTILITY2.60 ppb
EWG HEALTH GUIDELINE0.06 ppb
NO LEGAL LIMIT
DETAILS
X

Bromodichloromethane

more about
this contaminant

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. Click here to read more about disinfection byproducts.

Bromodichloromethane was found at 43 times above EWG's Health Guideline.

EWG Health Guideline

0.06 ppb or less

This Utility

2.6 ppb

National Average

5.79 ppb

State Average

8.12 ppb
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2017-2019.
ppb = parts per billion

Health Risks

The EWG 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.

Pollution Sources

water treatment icon

Treatment Byproducts

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Chloroform

Potential Effect: cancer18x EWG'S HEALTH GUIDELINE
THIS UTILITY7.20 ppb
EWG HEALTH GUIDELINE0.4 ppb
NO LEGAL LIMIT
DETAILS
X

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.

Chloroform was found at 18 times above EWG's Health Guideline.

EWG Health Guideline

0.4 ppb or less

This Utility

7.2 ppb

National Average

15.5 ppb

State Average

24 ppb
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2017-2019.
ppb = parts per billion

Health Risks

The EWG 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.

Pollution Sources

water treatment icon

Treatment Byproducts

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Perfluorobutane sulfonate (PFBS)

Potential Effect: 4.2x EWG'S HEALTH GUIDELINE
THIS UTILITY4.20 ppt
EWG HEALTH GUIDELINE1 ppt
NO LEGAL LIMIT
DETAILS
X

Perfluorobutane sulfonate (PFBS)

more about
this contaminant

Perfluorobutane sulfonate (PFBS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

Perfluorobutane sulfonate (PFBS) was found at 4.2 times above EWG's Health Guideline.

EWG Health Guideline

1 ppt or less

This Utility

4.2 ppt

National Average

156.3 ppt

State Average

0.361 ppt
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2019.
ppt = parts per trillion

Health Risks

The EWG Health Guideline of 1 ppt for perfluorobutane sulfonate was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

Pollution Sources

industry icon

Industry

urban area icon

Runoff & Sprawl

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Perfluoroheptanoic acid (PFHPA)

Potential Effect: 3x EWG'S HEALTH GUIDELINE
THIS UTILITY3.00 ppt
EWG HEALTH GUIDELINE1 ppt
NO LEGAL LIMIT
DETAILS
X

Perfluoroheptanoic acid (PFHPA)

more about
this contaminant

Perfluoroheptanoic acid is a member of a group of perfluorinated chemicals used in many consumer products. Perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

Perfluoroheptanoic acid (PFHPA) was found at 3 times above EWG's Health Guideline.

EWG Health Guideline

1 ppt or less

This Utility

3 ppt

National Average

0.215 ppt

State Average

1.56 ppt
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2019.
ppt = parts per trillion

Health Risks

The EWG Health Guideline of 1 ppt for perfluoroheptanoic acid was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

Pollution Sources

industry icon

Industry

urban area icon

Runoff & Sprawl

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Perfluorohexane sulfonate (PFHXS)

Potential Effect: 7.1x EWG'S HEALTH GUIDELINE
THIS UTILITY7.10 ppt
EWG HEALTH GUIDELINE1 ppt
NO LEGAL LIMIT
DETAILS
X

Perfluorohexane sulfonate (PFHXS)

more about
this contaminant

Perfluorohexane sulfonate is a member of a group of perfluorinated chemicals used in many consumer products. Perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

Perfluorohexane sulfonate (PFHXS) was found at 7.1 times above EWG's Health Guideline.

EWG Health Guideline

1 ppt or less

This Utility

7.1 ppt

National Average

0.361 ppt

State Average

0.775 ppt
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2019.
ppt = parts per trillion

Health Risks

The EWG Health Guideline of 1 ppt for perfluorohexane sulfonate was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

Pollution Sources

industry icon

Industry

urban area icon

Runoff & Sprawl

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Perfluorononanoic acid (PFNA)

Potential Effect: 4.6x EWG'S HEALTH GUIDELINE
THIS UTILITY4.60 ppt
EWG HEALTH GUIDELINE1 ppt
NO LEGAL LIMIT
DETAILS
X

Perfluorononanoic acid (PFNA)

more about
this contaminant

Perfluorononanoic acid, otherwise known as PFNA or C9, is a PFC similar in function and use to PFOA. These chemicals were used in the production of non-stick, stain repellent and chemically inert coatings. Click here to read more about perfluorinated chemicals.

Perfluorononanoic acid (PFNA) was found at 4.6 times above EWG's Health Guideline.

EWG Health Guideline

1 ppt or less

This Utility

4.6 ppt

National Average

0.06 ppt

State Average

0.255 ppt
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2019.
ppt = parts per trillion

Health Risks

The EWG Health Guideline of 1 ppt for perfluorononanoic acid was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

Pollution Sources

industry icon

Industry

urban area icon

Runoff & Sprawl

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Perfluorooctane sulfonate (PFOS)

Potential Effect: 11x EWG'S HEALTH GUIDELINE
THIS UTILITY11.0 ppt
EWG HEALTH GUIDELINE1 ppt
NO LEGAL LIMIT
DETAILS
X

Perfluorooctane sulfonate (PFOS)

more about
this contaminant

Perfluorooctane sulfonate (PFOS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

Perfluorooctane sulfonate (PFOS) was found at 11 times above EWG's Health Guideline.

EWG Health Guideline

1 ppt or less

This Utility

11 ppt

National Average

0.908 ppt

State Average

1.77 ppt
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2019.
ppt = parts per trillion

Health Risks

The EWG Health Guideline of 1 ppt for PFOS was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

Pollution Sources

industry icon

Industry

urban area icon

Runoff & Sprawl

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Perfluorooctanoic acid (PFOA)

Potential Effect: cancer857x EWG'S HEALTH GUIDELINE
THIS UTILITY6.00 ppt
EWG HEALTH GUIDELINE0.007 ppt
NO LEGAL LIMIT
DETAILS
X

Perfluorooctanoic acid (PFOA)

more about
this contaminant

Perfluorooctanoic acid (PFOA) is a member of a group of perfluorinated chemicals used in many consumer products. PFOA and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

Perfluorooctanoic acid (PFOA) was found at 857 times above EWG's Health Guideline.

EWG Health Guideline

0.007 ppt or less

This Utility

6 ppt

National Average

1.15 ppt

State Average

0.945 ppt
NO LEGAL LIMIT
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2019.
ppt = parts per trillion

Health Risks

The EWG Health Guideline of 0.007 ppt for PFOA was defined by 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 cancer.

Pollution Sources

industry icon

Industry

urban area icon

Runoff & Sprawl

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Radium, combined (-226 & -228)

Potential Effect: cancer12x EWG'S HEALTH GUIDELINE
THIS UTILITY0.61 pCi/L
EWG HEALTH GUIDELINE0.05 pCi/L
LEGAL LIMIT5 pCi/L
DETAILS
X

Radium, combined (-226 & -228)

more about
this contaminant

Radium is a radioactive element that causes bone cancer and other cancers. It can occur naturally in groundwater, and oil and gas extraction activities such as hydraulic fracturing can elevate concentrations.

Radium, combined (-226 & -228) was found at 12 times above EWG's Health Guideline.

EWG Health Guideline

0.05 pCi/L or less

This Utility

0.61 pCi/L

Legal Limit

5 pCi/L

National Average

0.46 pCi/L

State Average

0.22 pCi/L
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2014-2019.
pCi/L = picocuries per liter

Health Risks

EWG applied the health guideline of 0.05 pCi/L, defined by the California Office of Environmental Health Hazard Assessment as a public health goal for radium-226, to radium-226 and radium-228 combined. This health guideline protects against cancer.

Pollution Sources

industry icon

Industry

naturally occuring icon

Naturally Occurring

Filtering Options

reverse osmosis icon

Reverse Osmosis

ion exchange icon

Ion Exchange

Includes chemicals detected in 2017-2019 for which annual utility averages exceeded an EWG-selected health guideline established by a federal or state public health authority; chemicals detected under the EPA's Unregulated Contaminant Monitoring Rule (UCMR 3) program in 2013 to 2015 (and subsequent testing when available), for which annual utility averages exceeded a health guideline established by a federal or state public health authority; radiological contaminants detected between 2014 and 2019.


Other Contaminants Tested


Chemicals tested for but not detected from 2014 to 2019:

1,1,1-Trichloroethane , 1,1,2,2-tetrafluoro-2-(1,2,2,2-tetrafluoro-ethoxy), 1,1,2-Trichloroethane , 1,1-Dichloroethylene , 1,2,4-Trichlorobenzene , 1,2-Dibromo-3-chloropropane (DBCP) , 1,2-Dichloroethane , 1,2-Dichloropropane , 10:2 Fluorotelomer sulfonic acid (10:2 FTSA) , 11-chloroeicosafluoro-3-oxanonane-1-sulfonate , 2,2,3,3,4,5,5,5-4-(1,1,2,2-tetrafluoro-2-sulfoetho, 2,4,5-TP (Silvex) , 2,4-D , 4,8-dioxa-3H-perfluorononanoic acid (ADONA) , 4:2 Fluorotelomer Sulfonic Acid (4:2 FTSA) , 6:2 Fluorotelomer Sulfonic Acid (6:2 FTSA) , 8:2 Fluorotelomer Sulfonic Acid (8:2 FTSA) , 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate , Alachlor (Lasso) , Antimony , Arsenic , Barium , Benzene , Benzo[a]pyrene , Beryllium , Bromoform , Cadmium , Carbofuran , Carbon tetrachloride , Chlordane , Chromium (total) , cis-1,2-Dichloroethylene , Combined uranium , Cyanide , Dalapon , Di(2-ethylhexyl) adipate , Di(2-ethylhexyl) phthalate , Dibromochloromethane , Dichloromethane (methylene chloride) , Dinoseb , Endrin , Ethanesulfonic acid, 2-[1-[difluoro(1,2,2,2-tetraf, Ethanesulfonic acid, 2-[1-[difluoro[(1,2,2-trifluo, Ethylbenzene , Ethylene dibromide , Heptachlor , Heptachlor epoxide , Hexachlorobenzene (HCB) , Hexachlorocyclopentadiene , Lindane , Mercury (inorganic) , Methoxychlor , Monochlorobenzene (chlorobenzene) , N-(3-dimethylaminopropan-1-yl)perfluoro-1-hexane-s, N-(carboxymethyl)-N,N-dimethyl-N-[3-(1H,1H,2H,2H-p, N-ethyl perfluorooctane sulfonamido acetic acid (N, N-methyl perfluorooctanesulfonamidoacetic acid , N-[3-(perfluoro-1-hexanesulfonamido)propan-1-yl]-N, o-Dichlorobenzene , Oxamyl (Vydate) , p-Dichlorobenzene , Pentachlorophenol , Perfluoro(3,5,7,9,11-pentaoxadodecanoic) acid , Perfluoro(3,5,7,9-tetraoxadecanoic) acid (PFO4DA) , Perfluoro(3,5,7-trioxaoctanoic) acid (PFO3OA) , Perfluoro(3,5-dioxahexanoic) acid (PFO2HxA) , Perfluoro-2-ethoxypropanoic acid (PEPA) , Perfluoro-2-methoxyacetic acid (PFMOAA) , Perfluoro-2-methoxypropanoic acid (PMPA) , Perfluoro-2-methyl-3-oxahexanoic acid (GenX) , Perfluorobutane sulfonamide (FBSA) , Perfluorodecanesulfonic acid (PFDS) , Perfluorodecanoic acid (PFDA) , Perfluorododecanoic acid (PFDoA) , Perfluoroheptane sulfonic acid (PFHpS) , Perfluorohexane sulfonamide (FHxSA) , Perfluorononanesulfonic acid (PFNS) , Perfluorooctanesulfonamide (PFOSA) , Perfluoropentane sulfonic acid (PFPeS) , Perfluorotetradecanoic acid (PFTA) , Perfluorotridecanoic acid (PFTrDA) , Perfluoroundecanoic acid (PFUnA) , Picloram , Polychlorinated biphenyls (PCBs) , Propanoic acid, 3-[1-[difluoro(1,2,2,2-tetrafluoro, Selenium , Styrene , Tetrachloroethylene (perchloroethylene) , Thallium , Toluene , Toxaphene , trans-1,2-Dichloroethylene , Trichloroethylene , Vinyl chloride , Xylenes (total)

Piedmont Triad Regional compliance with legally mandated federal standards:

  • From April 2019 to March 2021, Piedmont Triad Regional complied with health-based drinking water standards.

Information in this section on Piedmont Triad Regional comes from the U.S. EPA Enforcement and Compliance History Online database (ECHO).

LEARN MORE ABOUT THIS UTILITY

Water Filters That Can Reduce Contaminant Levels

ContaminantActivated Carbonactivated carbonReverse Osmosisreverse osmosisIon Exchangeion exchange
CONTAMINANTS ABOVE
HEALTH GUIDELINES
1,4-Dioxane
Bromodichloromethane
Chloroform
Perfluorobutane sulfonate (PFBS)
Perfluoroheptanoic acid (PFHPA)
Perfluorohexane sulfonate (PFHXS)
Perfluorononanoic acid (PFNA)
Perfluorooctane sulfonate (PFOS)
Perfluorooctanoic acid (PFOA)
Radium, combined (-226 & -228)
OTHER CONTAMINANTS
DETECTED
Atrazine
Fluoride
Manganese
Nitrate
Perfluorobutanoic acid (PFBA)
Perfluorohexanoic Acid (PFHxA)
Perfluoropentanoic acid (PFPeA)
Quinoline
Simazine

Take Action

Contact Your Local Official

One of the best ways to push for cleaner water is to hold accountable the elected officials who have a say in water quality – from city hall and the state legislature to Congress all the way to the Oval Office – by asking questions and demanding answers.

LEARN MORE

Filter Out Contaminants

Check out our recommendations for filters to protect your water against the detected contaminants.

EWG’S WATER FILTER GUIDE