Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Mesa Grande Water Supply Corporation

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Texas Commission on Environmental Quality, 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

  • Hood County, Texas
  • Serves: 423
  • Data available: 2014-2019
  • Source: Groundwater

Contaminants Detected

4

EXCEED
EWG HEALTH
GUIDELINES

30 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.

What To Do

Filter contaminants out Contact Your Local Official What About Lead?

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EWG Health Guidelines fill the gap in outdated government standards.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

VIEW: EXCEED GUIDELINES OTHER DETECTED

Arsenic

Potential Effect: cancer200x EWG'S HEALTH GUIDELINE
THIS UTILITY0.800 ppb
EWG HEALTH GUIDELINE0.004 ppb
LEGAL LIMIT10 ppb
DETAILS
X

Arsenic

more about
this contaminant

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.

Arsenic was found at 200 times above EWG's Health Guideline.

EWG Health Guideline

0.004 ppb or less

This Utility

0.8 ppb

Legal Limit

10 ppb

National Average

0.647 ppb

State Average

1.03 ppb
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 0.004 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.

VIEW MORE TESTING DATA

Pollution Sources

agriculture icon

Agriculture

industry icon

Industry

naturally occuring icon

Naturally Occurring

Filtering Options

reverse osmosis icon

Reverse Osmosis

ion exchange icon

Ion Exchange

Bromodichloromethane

Potential Effect: cancer6.3x EWG'S HEALTH GUIDELINE
THIS UTILITY0.381 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 6.3 times above EWG's Health Guideline.

EWG Health Guideline

0.06 ppb or less

This Utility

0.381 ppb

National Average

5.79 ppb

State Average

7.02 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.

VIEW MORE TESTING DATA

Pollution Sources

water treatment icon

Treatment Byproducts

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Bromoform

Potential Effect: cancer2.9x EWG'S HEALTH GUIDELINE
THIS UTILITY1.45 ppb
EWG HEALTH GUIDELINE0.5 ppb
NO LEGAL LIMIT
DETAILS
X

Bromoform

more about
this contaminant

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

Bromoform was found at 2.9 times above EWG's Health Guideline.

EWG Health Guideline

0.5 ppb or less

This Utility

1.45 ppb

National Average

1.32 ppb

State Average

3.19 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 0.5 ppb for bromoform 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.

VIEW MORE TESTING DATA

Pollution Sources

water treatment icon

Treatment Byproducts

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Dibromochloromethane

Potential Effect: cancer8.9x EWG'S HEALTH GUIDELINE
THIS UTILITY0.887 ppb
EWG HEALTH GUIDELINE0.1 ppb
NO LEGAL LIMIT
DETAILS
X

Dibromochloromethane

more about
this contaminant

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. Click here to read more about disinfection byproducts.

Dibromochloromethane was found at 8.9 times above EWG's Health Guideline.

EWG Health Guideline

0.1 ppb or less

This Utility

0.887 ppb

National Average

3.29 ppb

State Average

5.82 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 0.1 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.

VIEW MORE TESTING DATA

Pollution Sources

water treatment icon

Treatment Byproducts

Filtering Options

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

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.

Other Contaminants Tested

✕

Chemicals tested for but not detected from 2014 to 2019:

1,1,1,2-Tetrachloroethane , 1,1,1-Trichloroethane , 1,1,2,2-Tetrachloroethane , 1,1,2-Trichloroethane , 1,1-Dichloroethane , 1,1-Dichloroethylene , 1,1-Dichloropropene , 1,2,3-Trichlorobenzene , 1,2,3-Trichloropropane , 1,2,4-Trichlorobenzene , 1,2-Dibromo-3-chloropropane (DBCP) , 1,2-Dichloroethane , 1,2-Dichloropropane , 1,3-Dichloropropane , 2,2-Dichloropropane , 2,4,5-T , 2,4,5-TP (Silvex) , 2,4-D , 2,4-DB , 2-Hexanone , 3,5-Dichlorobenzoic acid , 3-Hydroxycarbofuran , Acifluorfen (Blazer) , Acrylonitrile , Alachlor (Lasso) , Aldicarb , Aldicarb sulfone , Aldicarb sulfoxide , Aldrin , alpha-Chlordane , Antimony , Atrazine , Baygon (Propoxur) , Bentazon (Basagran) , Benzene , Benzo[a]pyrene , Beryllium , Bromacil , Bromobenzene , Bromochloroacetic acid , Bromomethane , Butachlor , Cadmium , Carbaryl , Carbofuran , Carbon tetrachloride , Chloramben , Chlordane , Chloroethane , Chromium (total) , cis-1,2-Dichloroethylene , cis-1,3-Dichloropropene , Combined uranium , Dalapon , Di(2-ethylhexyl) adipate , Di(2-ethylhexyl) phthalate , Dibromoacetic acid , Dicamba , Dichloroacetic acid , Dichlorodifluoromethane , Dichloromethane (methylene chloride) , Dichlorprop , Dieldrin , Dinoseb , Endrin , Ethyl methacrylate , Ethylene dibromide , gamma-Chlordane , Haloacetic acids (HAA5) , Heptachlor , Heptachlor epoxide , Hexachlorobenzene (HCB) , Hexachlorobutadiene , Hexachlorocyclopentadiene , Iodomethane , Isopropylbenzene , Lindane , m-Dichlorobenzene , Mercury (inorganic) , Methiocarb , Methomyl , Methoxychlor , Methyl methacrylate , Metolachlor , Metribuzin , Monobromoacetic acid , Monochloroacetic acid , Monochlorobenzene (chlorobenzene) , MTBE , n-Butylbenzene , Naphthalene , Nitrite , o-Chlorotoluene , o-Dichlorobenzene , Oxamyl (Vydate) , p-Chlorotoluene , p-Dichlorobenzene , p-Isopropyltoluene , Pentachlorophenol , Picloram , Polychlorinated biphenyls (PCBs) , Propachlor , Radium, combined (-226 & -228) , sec-Butylbenzene , Selenium , Silver , Simazine , tert-Butylbenzene , Tetrachloroethylene (perchloroethylene) , Thallium , Toluene , Total trihalomethanes (TTHMs) , Toxaphene , trans-1,2-Dichloroethylene , trans-1,2-Dichloropropene , trans-Nonachlor , Trichloroacetic acid , Trichloroethylene , Trichlorofluoromethane , Vinyl acetate , Vinyl chloride

Mesa Grande Water Supply Corporation compliance with legally mandated federal standards:

  • From April 2019 to March 2021, Mesa Grande Water Supply Corporation complied with health-based drinking water standards.
  • 12 QUARTERS
    in violation of any federal drinking water standard from April 2019 to March 2021

Information in this section on Mesa Grande Water Supply Corporation 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
Arsenic✔✔
Bromodichloromethane✔✔
Bromoform✔✔
Dibromochloromethane✔✔
OTHER CONTAMINANTS
DETECTED
1,2,3-trimethylbenzene (hemellitol)✔✔
1,2,4-Trimethylbenzene✔✔
1,3,5-Trimethylbenzene✔✔
2-Methylbutane✔✔
Acetone
Aluminum✔
Barium✔✔
Bromochloromethane✔✔
Butane
Chloroform✔✔
Chloromethane✔✔
Cyanide✔✔
Dibromomethane✔✔
Ethylbenzene✔✔
Fluoride✔
Isobutane
Manganese✔
Methyl ethyl ketone✔✔
Methyl isobutyl ketone✔✔
n-Propylbenzene✔✔
Nitrate✔✔
Nitrate & nitrite✔✔
Pentane✔✔
Styrene✔✔
Tetrahydrofuran
Xylenes (total)✔✔

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
Get the guide

Get the guide
play video
Glass being filled up in kitchen sink

EWG drinking water standards
picture of civic meeting

Have a question?