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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

East Biggs Water System

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

62

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20147.05 ppb1613ND - 23.1 ppb
20155.50 ppb1612ND - 19.5 ppb
20169.52 ppb1612ND - 25.0 ppb
20174.26 ppb1612ND - 17.6 ppb
201810.1 ppb1610ND - 24.0 ppb
20190.300 ppb163ND - 2.20 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
2014-02-27Q14064920042.70 ppb
2014-02-27Q14064920034.60 ppb
2014-02-27Q14064920023.70 ppb
2014-02-27Q14064920014.60 ppb
2014-05-28Q1418497004ND
2014-05-28Q14184970022.20 ppb
2014-06-09Q1420366002ND
2014-06-09Q1420366001ND
2014-08-06Q143493800223.1 ppb
2014-08-06Q143493800122.0 ppb
2014-08-06Q143493800317.4 ppb
2014-08-06Q143493800418.4 ppb
2014-11-19Q14569530044.40 ppb
2014-11-19Q14569530033.60 ppb
2014-11-19Q14569530023.20 ppb
2014-11-19Q14569530012.90 ppb
2015-01-14Q15014770042.70 ppb
2015-01-14Q15014770032.50 ppb
2015-01-14Q15014770022.70 ppb
2015-01-14Q15014770012.70 ppb
2015-04-29Q1515770001ND
2015-04-29Q1515770002ND
2015-04-29Q1515770004ND
2015-04-29Q1515770003ND
2015-07-29Q152939300419.5 ppb
2015-07-29Q152939300314.3 ppb
2015-07-29Q152939300218.0 ppb
2015-07-29Q152939300112.2 ppb
2015-10-14Q15407210044.50 ppb
2015-10-14Q15407210035.00 ppb
2015-10-14Q15407210022.60 ppb
2015-10-14Q15407210011.30 ppb
2016-01-27Q1603772003ND
2016-01-27Q16037720021.20 ppb
2016-01-27Q1603772004ND
2016-01-27Q16037720012.00 ppb
2016-04-27Q161671200417.9 ppb
2016-04-27Q16167120031.90 ppb
2016-04-27Q161671200213.7 ppb
2016-04-27Q16167120012.80 ppb
2016-07-28Q163087800416.0 ppb
2016-07-28Q163087800325.0 ppb
2016-07-28Q163087800218.0 ppb
2016-07-28Q163087800125.0 ppb
2016-10-31Q164685000319.8 ppb
2016-10-31Q1646850002ND
2016-10-31Q1646850004ND
2016-10-31Q16468500019.00 ppb
2017-01-18Q17022820045.40 ppb
2017-01-18Q1702282003ND
2017-01-18Q1702282002ND
2017-01-18Q1702282001ND
2017-04-12Q17149060043.20 ppb
2017-04-12Q17149060032.50 ppb
2017-04-12Q17149060021.50 ppb
2017-04-12Q17149060013.00 ppb
2017-07-06Q17275270021.40 ppb
2017-07-06Q172752700117.6 ppb
2017-07-06Q172752700312.4 ppb
2017-07-10Q172923900111.0 ppb
2017-11-02Q17564790026.10 ppb
2017-11-02Q1756479004ND
2017-11-02Q17564790031.80 ppb
2017-11-02Q17564790012.20 ppb
2018-02-07Q1805393005ND
2018-02-07Q1805393004ND
2018-02-07Q1805393003ND
2018-02-07Q1805393002ND
2018-05-07Q181850400219.4 ppb
2018-05-07Q181850400318.4 ppb
2018-05-07Q181850400418.7 ppb
2018-05-07Q181850400118.1 ppb
2018-07-25Q182984500319.2 ppb
2018-07-25Q182984500213.0 ppb
2018-07-25Q182984500118.2 ppb
2018-07-25Q182984500424.0 ppb
2018-10-29Q18438020047.20 ppb
2018-10-29Q1843802003ND
2018-10-29Q18438020025.60 ppb
2018-10-29Q1843802001ND
2019-02-06Q19058720041.30 ppb
2019-02-06Q19058720022.20 ppb
2019-02-06Q1905872003ND
2019-02-06Q19058720051.30 ppb
2019-05-13Q1924300005ND
2019-05-13Q1924300004ND
2019-05-13Q1924300003ND
2019-05-13Q1924300002ND
2019-08-07Q1952913004ND
2019-08-07Q1952913003ND
2019-08-07Q1952913002ND
2019-08-07Q1952913001ND
2019-11-22Q1978246001ND
2019-11-22Q1978246004ND
2019-11-22Q1978246003ND
2019-11-22Q1978246002ND