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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

El Paso Water Utilities

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

 

288

Samples

0

Samples exceeding legal limit (MCL)

196

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20147.55 ppb4840ND - 24.3 ppb
20156.71 ppb4831ND - 34.8 ppb
20168.19 ppb4832ND - 28.6 ppb
201710.1 ppb4837ND - 41.9 ppb
20189.26 ppb4833ND - 43.3 ppb
20195.35 ppb4823ND - 37.4 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
2014-03-17Q14086370013.50 ppb
2014-03-17Q14086370025.60 ppb
2014-03-17Q14086370034.20 ppb
2014-03-17Q14086370042.70 ppb
2014-03-17Q1408637005ND
2014-03-17Q14086370062.80 ppb
2014-03-17Q1408637007ND
2014-03-17Q14086370082.90 ppb
2014-03-17Q14086370093.30 ppb
2014-03-17Q14086370103.20 ppb
2014-03-17Q14086370114.10 ppb
2014-03-17Q14086370122.00 ppb
2014-06-05Q1419749003ND
2014-06-05Q141974900418.7 ppb
2014-06-05Q1419749005ND
2014-06-05Q14197490066.20 ppb
2014-06-05Q14197490073.70 ppb
2014-06-05Q14197490085.80 ppb
2014-06-05Q14197490092.40 ppb
2014-06-05Q14197490109.60 ppb
2014-06-05Q141974901115.7 ppb
2014-06-05Q141974901219.2 ppb
2014-06-05Q14197490133.10 ppb
2014-06-05Q14197490143.50 ppb
2014-08-18Q143739900315.6 ppb
2014-08-18Q143739900419.5 ppb
2014-08-18Q143739900515.0 ppb
2014-08-18Q143739900615.4 ppb
2014-08-18Q143739900717.2 ppb
2014-08-18Q143739900815.3 ppb
2014-08-18Q143739900924.3 ppb
2014-08-18Q143739901016.7 ppb
2014-08-18Q143739901116.8 ppb
2014-08-18Q143739901215.0 ppb
2014-08-18Q14373990139.70 ppb
2014-08-19Q143755900619.5 ppb
2014-10-23Q145388000610.2 ppb
2014-10-23Q14538800079.30 ppb
2014-10-23Q14538800083.00 ppb
2014-10-23Q14538800092.80 ppb
2014-10-27Q14542840014.90 ppb
2014-10-27Q1454284002ND
2014-10-27Q1454284003ND
2014-10-27Q1454284004ND
2014-10-27Q14542840053.00 ppb
2014-10-27Q14542840062.90 ppb
2014-10-27Q1454284007ND
2014-10-27Q14542840084.30 ppb
2015-01-13Q15014760023.90 ppb
2015-01-13Q1501476003ND
2015-01-13Q15014760043.70 ppb
2015-01-13Q15014760052.70 ppb
2015-01-13Q15014760065.60 ppb
2015-01-13Q15014760072.10 ppb
2015-01-13Q15014760084.00 ppb
2015-01-13Q15014760013.60 ppb
2015-01-15Q15014760096.60 ppb
2015-01-15Q15014760103.20 ppb
2015-01-15Q15014760112.40 ppb
2015-01-15Q15014760123.00 ppb
2015-05-06Q1517044001ND
2015-05-06Q1517044002ND
2015-05-06Q1517044003ND
2015-05-06Q1517044004ND
2015-05-06Q15170440053.80 ppb
2015-05-06Q15170440066.40 ppb
2015-05-06Q1517044007ND
2015-05-06Q151704400810.2 ppb
2015-05-06Q1517044009ND
2015-05-06Q15170440101.50 ppb
2015-05-06Q1517044011ND
2015-05-06Q1517044012ND
2015-09-22Q153765200117.8 ppb
2015-09-22Q153765200225.2 ppb
2015-09-22Q153765200320.5 ppb
2015-09-22Q153765200417.3 ppb
2015-09-22Q153765200520.0 ppb
2015-09-22Q153765200613.3 ppb
2015-09-22Q153765200734.8 ppb
2015-09-22Q15376520088.40 ppb
2015-09-22Q153765200913.8 ppb
2015-09-22Q153765201021.8 ppb
2015-09-22Q153765201121.5 ppb
2015-09-22Q153765201216.2 ppb
2015-11-02Q15432330037.80 ppb
2015-11-02Q1543233004ND
2015-11-02Q1543233005ND
2015-11-02Q1543233006ND
2015-11-02Q1543233007ND
2015-11-02Q15432330014.40 ppb
2015-11-02Q1543233002ND
2015-11-02Q15432330082.30 ppb
2015-11-02Q1543233009ND
2015-11-02Q1543233010ND
2015-11-02Q1543233011ND
2015-11-02Q154323301214.1 ppb
2016-02-11Q1606519001ND
2016-02-11Q1606519002ND
2016-02-11Q1606519003ND
2016-02-11Q1606519004ND
2016-02-11Q1606519005ND
2016-02-11Q16065190061.50 ppb
2016-02-11Q1606519007ND
2016-02-11Q1606519008ND
2016-02-11Q1606519009ND
2016-02-11Q1606519010ND
2016-02-11Q1606519011ND
2016-02-11Q1606519012ND
2016-04-26Q16163580013.50 ppb
2016-04-26Q161635800218.5 ppb
2016-04-26Q16163580034.60 ppb
2016-04-26Q161635800414.5 ppb
2016-04-26Q161635800515.7 ppb
2016-04-26Q161635800617.1 ppb
2016-04-26Q161635800715.6 ppb
2016-04-26Q16163580085.00 ppb
2016-04-26Q161635800910.5 ppb
2016-04-26Q161635801011.9 ppb
2016-04-26Q161635801112.3 ppb
2016-04-26Q16163580121.80 ppb
2016-08-02Q163222300312.2 ppb
2016-08-02Q163222300427.3 ppb
2016-08-02Q163222300525.0 ppb
2016-08-02Q163222300623.3 ppb
2016-08-02Q163222300717.7 ppb
2016-08-02Q16322230089.50 ppb
2016-08-02Q163222300928.6 ppb
2016-08-02Q163222301013.8 ppb
2016-08-02Q163222301125.3 ppb
2016-08-02Q163222301223.6 ppb
2016-08-02Q163222301312.0 ppb
2016-08-02Q16322230149.40 ppb
2016-11-21Q1651320006ND
2016-11-21Q1651320001ND
2016-11-21Q1651320007ND
2016-11-21Q1651320002ND
2016-11-21Q16513200081.10 ppb
2016-11-21Q16513200032.50 ppb
2016-11-21Q16513200095.50 ppb
2016-11-21Q16513200041.40 ppb
2016-11-21Q1651320005ND
2016-11-22Q16513200129.30 ppb
2016-11-22Q16513200107.50 ppb
2016-11-22Q16513200135.70 ppb
2017-02-28Q1708480012ND
2017-02-28Q1708480001ND
2017-02-28Q1708480002ND
2017-02-28Q1708480003ND
2017-02-28Q17084800042.50 ppb
2017-02-28Q17084800056.00 ppb
2017-02-28Q1708480006ND
2017-02-28Q17084800071.10 ppb
2017-02-28Q17084800081.10 ppb
2017-02-28Q17084800091.000 ppb
2017-02-28Q1708480010ND
2017-02-28Q1708480011ND
2017-04-19Q171614900111.7 ppb
2017-04-19Q171614900215.1 ppb
2017-04-19Q171614900335.7 ppb
2017-04-19Q171614900412.3 ppb
2017-04-19Q171614900511.9 ppb
2017-04-19Q17161490067.40 ppb
2017-04-19Q171614900713.2 ppb
2017-04-19Q17161490086.20 ppb
2017-04-19Q17161490099.10 ppb
2017-04-19Q171614901014.2 ppb
2017-04-19Q17161490115.50 ppb
2017-04-19Q17161490129.40 ppb
2017-08-01Q173244300120.5 ppb
2017-08-01Q173244300225.5 ppb
2017-08-01Q173244300326.5 ppb
2017-08-01Q173244300423.5 ppb
2017-08-01Q173244300520.0 ppb
2017-08-01Q173244300632.4 ppb
2017-08-01Q173244300741.9 ppb
2017-08-01Q173244300811.0 ppb
2017-08-01Q173244300912.2 ppb
2017-08-01Q173244301020.6 ppb
2017-08-01Q173244301121.4 ppb
2017-08-01Q173244301218.3 ppb
2017-10-31Q1755920006ND
2017-10-31Q17559200013.40 ppb
2017-10-31Q17559200073.50 ppb
2017-10-31Q1755920002ND
2017-10-31Q17559200083.30 ppb
2017-10-31Q17559200037.90 ppb
2017-10-31Q1755920009ND
2017-10-31Q175592001012.8 ppb
2017-10-31Q17559200046.50 ppb
2017-10-31Q17559200115.20 ppb
2017-10-31Q1755920005ND
2017-10-31Q17559200122.90 ppb
2018-02-20Q1806825001ND
2018-02-20Q18068250072.40 ppb
2018-02-20Q1806825002ND
2018-02-20Q1806825008ND
2018-02-20Q1806825003ND
2018-02-20Q18068250098.90 ppb
2018-02-20Q1806825004ND
2018-02-20Q18068250101.10 ppb
2018-02-20Q1806825005ND
2018-02-20Q18068250111.30 ppb
2018-02-20Q1806825006ND
2018-02-20Q1806825012ND
2018-06-06Q182278300511.0 ppb
2018-06-06Q182278300615.4 ppb
2018-06-06Q18227830071.30 ppb
2018-06-06Q182278300819.0 ppb
2018-06-06Q182278300918.1 ppb
2018-06-06Q182278301018.3 ppb
2018-06-06Q182278301137.0 ppb
2018-06-06Q182278301221.0 ppb
2018-06-06Q182278301310.6 ppb
2018-06-06Q182278301418.5 ppb
2018-06-06Q182278301540.6 ppb
2018-06-06Q182278301643.3 ppb
2018-09-25Q183846400714.4 ppb
2018-09-25Q183846400114.3 ppb
2018-09-25Q18384640087.90 ppb
2018-09-25Q183846400217.6 ppb
2018-09-25Q183846400910.3 ppb
2018-09-25Q183846400312.8 ppb
2018-09-25Q183846401030.6 ppb
2018-09-25Q183846400414.4 ppb
2018-09-25Q183846401115.2 ppb
2018-09-25Q183846400514.8 ppb
2018-09-25Q18384640122.20 ppb
2018-09-25Q1838464006ND
2018-12-03Q1849265001ND
2018-12-03Q1849265008ND
2018-12-03Q1849265002ND
2018-12-03Q1849265009ND
2018-12-03Q18492650033.00 ppb
2018-12-03Q18492650047.30 ppb
2018-12-03Q1849265010ND
2018-12-03Q18492650054.60 ppb
2018-12-03Q18492650113.80 ppb
2018-12-03Q18492650062.00 ppb
2018-12-03Q18492650121.60 ppb
2018-12-03Q1849265007ND
2019-02-26Q1908311012ND
2019-02-26Q19083110011.40 ppb
2019-02-26Q1908311002ND
2019-02-26Q1908311003ND
2019-02-26Q1908311004ND
2019-02-26Q19083110051.70 ppb
2019-02-26Q1908311006ND
2019-02-26Q19083110071.000 ppb
2019-02-26Q19083110081.80 ppb
2019-02-26Q19083110091.70 ppb
2019-02-26Q1908311010ND
2019-02-26Q1908311011ND
2019-05-15Q1926406001ND
2019-05-15Q1926406002ND
2019-05-15Q1926406003ND
2019-05-15Q1926406004ND
2019-05-15Q19264060051.10 ppb
2019-05-15Q19264060125.50 ppb
2019-05-15Q1926406006ND
2019-05-15Q19264060072.80 ppb
2019-05-15Q19264060082.80 ppb
2019-05-15Q1926406009ND
2019-05-15Q1926406010ND
2019-05-15Q1926406011ND
2019-08-19Q1956858001ND
2019-08-19Q195685800210.8 ppb
2019-08-19Q1956858003ND
2019-08-19Q195685800428.0 ppb
2019-08-19Q19568580054.00 ppb
2019-08-19Q195685800637.4 ppb
2019-08-19Q195685800713.6 ppb
2019-08-19Q195685800823.7 ppb
2019-08-19Q195685800921.4 ppb
2019-08-19Q195685801030.3 ppb
2019-08-19Q195685801121.4 ppb
2019-08-19Q195685801219.7 ppb
2019-11-07Q1976129001ND
2019-11-07Q1976129002ND
2019-11-07Q1976129003ND
2019-11-07Q1976129004ND
2019-11-07Q19761290051.70 ppb
2019-11-07Q19761290065.20 ppb
2019-11-07Q1976129007ND
2019-11-07Q197612900818.4 ppb
2019-11-07Q1976129009ND
2019-11-07Q19761290101.50 ppb
2019-11-07Q1976129011ND
2019-11-07Q1976129012ND