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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

City of Euless

Haloacetic acids are formed when disinfectants such as chlorine are added to tap water. The group of five haloacetic acids regulated by federal standards includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid. Read More.

Haloacetic acids are harmful during pregnancy and may increase the risk of cancer. Haloacetic acids are� genotoxic, which means that they induce mutations and DNA damage. Multiple studies by the National Toxicology Program have demonstrated the cancer-causing properties of individual haloacetic acids in laboratory animals. The Department of Health and Human Services is currently considering listing di- or tri-haloacetic acids for possible inclusion in its comprehensive Report on Carcinogens.

Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

192

Samples

0

Samples exceeding legal limit (MCL)

158

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
201414.9 ppb3230ND - 33.1 ppb
201511.5 ppb3224ND - 33.8 ppb
201611.1 ppb3224ND - 32.3 ppb
20179.10 ppb3225ND - 22.3 ppb
201810.2 ppb3229ND - 30.0 ppb
20199.62 ppb3226ND - 27.3 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for the group of five haloacetic acids, or HAA5, was defined in a peer-reviewed scientific study by EWG and represents a one-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 60 ppb

The legal limit for the group of five haloacetic acids (HAA5), established in 1998, was based on the need for residual disinfectant levels in water served to customers and the cost of treatment. This limit does not fully protect against the risk of cancer and harm to the developing fetus due to exposure to haloacetic acids.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-25Q14063660089.30 ppb
2014-02-25Q140636600111.1 ppb
2014-02-25Q14063660028.20 ppb
2014-02-25Q140636600313.2 ppb
2014-02-25Q140636600411.5 ppb
2014-02-25Q140636600512.6 ppb
2014-02-25Q14063660068.90 ppb
2014-02-25Q14063660079.90 ppb
2014-04-08Q14113360076.50 ppb
2014-04-08Q141133600818.6 ppb
2014-04-08Q141133600111.2 ppb
2014-04-08Q141133600220.0 ppb
2014-04-08Q141133600316.1 ppb
2014-04-08Q141133600419.1 ppb
2014-04-08Q141133600511.6 ppb
2014-04-08Q14113360069.20 ppb
2014-07-08Q142616700114.7 ppb
2014-07-08Q142616700230.1 ppb
2014-07-08Q142616700330.8 ppb
2014-07-08Q142616700431.4 ppb
2014-07-08Q142616700525.7 ppb
2014-07-08Q142616700633.1 ppb
2014-07-08Q1426167007ND
2014-07-08Q14261670089.80 ppb
2014-10-14Q14527210011.60 ppb
2014-10-14Q145272100216.4 ppb
2014-10-14Q145272100320.7 ppb
2014-10-14Q145272100414.2 ppb
2014-10-14Q145272100514.7 ppb
2014-10-14Q145272100621.2 ppb
2014-10-14Q145272100714.6 ppb
2014-10-14Q1452721008ND
2015-01-22Q15022920013.30 ppb
2015-01-22Q150229200212.3 ppb
2015-01-22Q15022920035.40 ppb
2015-01-22Q150229200412.5 ppb
2015-01-22Q15022920052.70 ppb
2015-01-22Q15022920066.60 ppb
2015-01-22Q15022920073.90 ppb
2015-01-22Q15022920086.10 ppb
2015-04-09Q1513321001ND
2015-04-09Q151332100226.1 ppb
2015-04-09Q1513321003ND
2015-04-09Q151332100423.4 ppb
2015-04-09Q15133210058.60 ppb
2015-04-09Q151332100610.6 ppb
2015-04-09Q1513321007ND
2015-04-09Q151332100810.8 ppb
2015-07-13Q152663900719.9 ppb
2015-07-13Q152663900831.6 ppb
2015-07-13Q1526639001ND
2015-07-13Q152663900233.8 ppb
2015-07-13Q152663900324.7 ppb
2015-07-13Q152663900433.0 ppb
2015-07-13Q1526639005ND
2015-07-13Q15266390066.40 ppb
2015-10-05Q1538803001ND
2015-10-05Q153880300221.7 ppb
2015-10-05Q1538803003ND
2015-10-05Q153880300423.3 ppb
2015-10-05Q153880300517.2 ppb
2015-10-05Q15388030069.40 ppb
2015-10-05Q1538803007ND
2015-10-05Q153880300813.5 ppb
2016-01-07Q16005030023.90 ppb
2016-01-07Q160050300315.0 ppb
2016-01-07Q1600503004ND
2016-01-07Q160050300514.0 ppb
2016-01-07Q16005030064.40 ppb
2016-01-07Q160050300715.1 ppb
2016-01-07Q1600503008ND
2016-01-07Q160050300110.6 ppb
2016-04-05Q16133710077.10 ppb
2016-04-05Q161337100814.1 ppb
2016-04-05Q16133710092.80 ppb
2016-04-05Q161337101013.5 ppb
2016-04-05Q16133710115.80 ppb
2016-04-05Q161337101212.6 ppb
2016-04-05Q16133710136.40 ppb
2016-04-05Q16133710142.50 ppb
2016-07-11Q1627745002ND
2016-07-11Q162774500331.0 ppb
2016-07-11Q1627745004ND
2016-07-11Q162774500529.2 ppb
2016-07-11Q162774500629.0 ppb
2016-07-11Q162774500732.3 ppb
2016-07-11Q1627745008ND
2016-07-11Q162774500120.9 ppb
2016-10-06Q1642445001ND
2016-10-06Q164244500217.4 ppb
2016-10-06Q1642445003ND
2016-10-06Q164244500422.6 ppb
2016-10-06Q164244500513.1 ppb
2016-10-06Q164244500624.4 ppb
2016-10-06Q1642445007ND
2016-10-06Q16424450087.60 ppb
2017-01-03Q17001290134.80 ppb
2017-01-03Q170012900318.7 ppb
2017-01-03Q17001290141.20 ppb
2017-01-03Q170012900419.7 ppb
2017-01-03Q170012901515.3 ppb
2017-01-03Q170012900520.8 ppb
2017-01-03Q17001290161.60 ppb
2017-01-03Q17001290066.90 ppb
2017-04-05Q17141040028.40 ppb
2017-04-05Q171410400320.0 ppb
2017-04-05Q17141040015.20 ppb
2017-04-05Q171410400419.8 ppb
2017-04-05Q171410400818.7 ppb
2017-04-05Q171410400512.6 ppb
2017-04-05Q1714104006ND
2017-04-05Q17141040077.30 ppb
2017-07-12Q1728560001ND
2017-07-12Q17285600027.60 ppb
2017-07-12Q1728560004ND
2017-07-12Q17285600038.60 ppb
2017-07-12Q17285600052.00 ppb
2017-07-12Q17285600067.50 ppb
2017-07-12Q1728560007ND
2017-07-12Q17285600084.70 ppb
2017-10-09Q1749385001ND
2017-10-09Q174938500218.6 ppb
2017-10-09Q1749385003ND
2017-10-09Q174938500422.3 ppb
2017-10-09Q174938500519.3 ppb
2017-10-09Q174938500618.6 ppb
2017-10-09Q1749385007ND
2017-10-09Q17493850081.10 ppb
2018-01-03Q18002290032.00 ppb
2018-01-03Q180022900413.0 ppb
2018-01-03Q18002290051.000 ppb
2018-01-03Q180022900612.4 ppb
2018-01-03Q18002290072.60 ppb
2018-01-03Q180022900811.8 ppb
2018-01-03Q18002290091.000 ppb
2018-01-03Q18002290108.40 ppb
2018-04-09Q18143650013.20 ppb
2018-04-09Q181436500216.2 ppb
2018-04-09Q18143650034.80 ppb
2018-04-09Q181436500418.3 ppb
2018-04-09Q181436500517.9 ppb
2018-04-09Q181436500618.9 ppb
2018-04-09Q18143650074.20 ppb
2018-04-09Q18143650086.20 ppb
2018-07-10Q182695500114.6 ppb
2018-07-10Q182695500218.6 ppb
2018-07-10Q1826955003ND
2018-07-10Q182695500422.8 ppb
2018-07-10Q182695500513.5 ppb
2018-07-10Q182695500621.0 ppb
2018-07-10Q1826955007ND
2018-07-10Q18269550087.70 ppb
2018-10-02Q18393110045.20 ppb
2018-10-02Q183931100712.2 ppb
2018-10-02Q1839311003ND
2018-10-02Q183931100813.2 ppb
2018-10-02Q183931100230.0 ppb
2018-10-02Q183931100111.8 ppb
2018-10-02Q18393110053.60 ppb
2018-10-02Q183931100611.7 ppb
2019-01-18Q19030750013.00 ppb
2019-01-18Q19030750059.60 ppb
2019-01-18Q19030750022.20 ppb
2019-01-18Q190307500613.1 ppb
2019-01-18Q190307500317.3 ppb
2019-01-18Q190307500717.6 ppb
2019-01-18Q19030750043.20 ppb
2019-01-18Q19030750086.40 ppb
2019-04-17Q1915358004ND
2019-04-17Q191535800112.7 ppb
2019-04-17Q1915358005ND
2019-04-17Q191535800212.9 ppb
2019-04-17Q19153580062.80 ppb
2019-04-17Q191535800710.4 ppb
2019-04-17Q1915358003ND
2019-04-17Q19153580084.70 ppb
2019-07-17Q1945485006ND
2019-07-17Q194548500721.1 ppb
2019-07-17Q1945485008ND
2019-07-17Q19454850097.10 ppb
2019-07-17Q194548501023.3 ppb
2019-07-17Q194548501127.3 ppb
2019-07-17Q1945485012ND
2019-07-17Q19454850137.20 ppb
2019-10-15Q197283400115.3 ppb
2019-10-15Q197283400212.3 ppb
2019-10-15Q197283400315.7 ppb
2019-10-15Q197283400412.5 ppb
2019-10-15Q197283400516.1 ppb
2019-10-15Q197283400617.0 ppb
2019-10-15Q197283400714.4 ppb
2019-10-15Q19728340082.60 ppb