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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Spanish Fort 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

 

168

Samples

0

Samples exceeding legal limit (MCL)

128

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201424.6 ppb1510ND - 58.4 ppb
201521.1 ppb149ND - 47.2 ppb
201620.9 ppb3225ND - 42.5 ppb
201720.4 ppb128ND - 49.2 ppb
201825.1 ppb7864ND - 44.9 ppb
201919.4 ppb1712ND - 38.9 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
2014-01-13AA88299ND
2014-01-16AA8829635.5 ppb
2014-01-16AA8829733.5 ppb
2014-01-16AA8829830.0 ppb
2014-04-11AA89089ND
2014-04-15AA8909240.1 ppb
2014-04-15AA8909035.6 ppb
2014-04-15AA8909132.5 ppb
2014-04-15AA89088ND
2014-07-16AA9062658.4 ppb
2014-07-16AA9062224.5 ppb
2014-07-16AA90627ND
2014-10-14AA92209ND
2014-10-16AA9220846.0 ppb
2014-10-16AA9221033.6 ppb
2015-01-12AB01992ND
2015-01-13AB0199332.6 ppb
2015-01-13AB0199126.5 ppb
2015-04-15AA03419ND
2015-04-16AB0341539.2 ppb
2015-04-16AB0341632.7 ppb
2015-04-16AB0341729.6 ppb
2015-04-16AB03418ND
2015-07-13AB0597947.2 ppb
2015-07-13AB0597843.0 ppb
2015-07-13AB05984ND
2015-10-13AB08456ND
2015-10-15AB0845523.0 ppb
2015-10-15AB0845421.0 ppb
2016-01-12AB09765ND
2016-01-14AB0976731.3 ppb
2016-01-14AB0976825.4 ppb
2016-01-14AB0976923.0 ppb
2016-01-14AB0976622.4 ppb
2016-01-14AB0976316.2 ppb
2016-01-14AB0976415.0 ppb
2016-01-14AB097700.491 ppb
2016-01-14AB09771ND
2016-04-12AB1106442.5 ppb
2016-04-12AB1106341.6 ppb
2016-04-12AB1106631.2 ppb
2016-04-12AB1106827.9 ppb
2016-04-12AB1106525.7 ppb
2016-04-12AB11060ND
2016-04-15AB1117836.7 ppb
2016-07-11AB1344340.0 ppb
2016-07-11AB1344237.0 ppb
2016-07-11AB1342936.7 ppb
2016-07-11AB1344134.6 ppb
2016-07-11AB1343422.7 ppb
2016-07-11AB1343311.0 ppb
2016-07-11AB13430ND
2016-10-13AB1581331.8 ppb
2016-10-13AB1582030.4 ppb
2016-10-13AB1581829.0 ppb
2016-10-13AB1581920.9 ppb
2016-10-13AB1581719.2 ppb
2016-10-13AB158/1615.0 ppb
2016-10-13AB15814ND
2016-10-13AB15815ND
2016-10-13AB15812ND
2017-01-11AB17269ND
2017-01-12AB1726723.8 ppb
2017-01-12AB1726813.0 ppb
2017-04-10AB18603ND
2017-04-11AB1860135.4 ppb
2017-04-11AB1860225.1 ppb
2017-07-13AB210.34ND
2017-07-14AB2103349.2 ppb
2017-07-14AB2103539.8 ppb
2017-10-11AB23670ND
2017-10-12AB2366838.2 ppb
2017-10-12AB2366920.2 ppb
2018-01-11AB2503936.0 ppb
2018-01-11AB2504035.0 ppb
2018-01-11AB25041ND
2018-02-15AB25425ND
2018-02-16AB2542337.9 ppb
2018-02-16AB2542437.2 ppb
2018-02-16AB2542136.7 ppb
2018-02-16AB2542835.2 ppb
2018-02-16AB2542934.8 ppb
2018-02-16AB2542732.8 ppb
2018-02-16AB2542632.1 ppb
2018-02-16AB2542030.4 ppb
2018-02-16AB2542225.9 ppb
2018-02-16AB254190.467 ppb
2018-04-09AB26307ND
2018-04-10AB2631444.9 ppb
2018-04-10AB2630543.4 ppb
2018-04-10AB2630642.0 ppb
2018-04-10AB2631541.3 ppb
2018-04-10AB2631039.7 ppb
2018-04-10AB2631239.3 ppb
2018-04-10AB2631138.8 ppb
2018-04-10AB2631637.0 ppb
2018-04-10AB2631336.5 ppb
2018-04-10AB2630934.3 ppb
2018-04-10AB2631731.4 ppb
2018-04-10AB26308ND
2018-06-14AB2775444.2 ppb
2018-06-14AB2775340.2 ppb
2018-06-14AB2775639.6 ppb
2018-06-14AB2775739.6 ppb
2018-06-14AB2775139.2 ppb
2018-06-14AB2775535.2 ppb
2018-06-14AB2775234.1 ppb
2018-06-14AB2774932.7 ppb
2018-06-14AB2775030.4 ppb
2018-06-14AB27759ND
2018-06-14AB27758ND
2018-07-12AB2849827.7 ppb
2018-07-12AB2849922.7 ppb
2018-07-12AB2850021.1 ppb
2018-07-12AB28501ND
2018-07-12AB28502ND
2018-08-15AB29379ND
2018-08-16AB2938030.6 ppb
2018-08-16AB2938629.7 ppb
2018-08-16AB2938528.3 ppb
2018-08-16AB2938727.9 ppb
2018-08-16AB2937827.3 ppb
2018-08-16AB2938425.4 ppb
2018-08-16AB2938119.0 ppb
2018-08-16AB2937717.1 ppb
2018-08-16AB2938216.9 ppb
2018-08-16AB29383ND
2018-10-11AB30935ND
2018-10-12AB3094743.2 ppb
2018-10-12AB3094541.9 ppb
2018-10-12AB3093836.7 ppb
2018-10-12AB3094033.3 ppb
2018-10-12AB3094233.2 ppb
2018-10-12AB3094631.9 ppb
2018-10-12AB3094431.4 ppb
2018-10-12AB3094130.1 ppb
2018-10-12AB3094327.3 ppb
2018-10-12AB3093724.6 ppb
2018-10-12AB3093918.9 ppb
2018-10-12AB30936ND
2018-12-10AB32187ND
2018-12-11AB3219425.7 ppb
2018-12-11AB3219222.7 ppb
2018-12-11AB3219720.7 ppb
2018-12-11AB3219620.4 ppb
2018-12-11AB3219018.5 ppb
2018-12-11AB3219318.4 ppb
2018-12-11AB3218918.3 ppb
2018-12-11AB3219515.4 ppb
2018-12-11AB3219114.8 ppb
2018-12-11AB32188ND
2019-01-15AB3258433.5 ppb
2019-01-15AB3258333.0 ppb
2019-01-15AB3258221.7 ppb
2019-01-15AB32585ND
2019-01-15AB32586ND
2019-06-13AB35900ND
2019-06-14AB3590224.2 ppb
2019-06-14AB3590323.5 ppb
2019-06-14AB3590116.2 ppb
2019-09-10AB3836238.9 ppb
2019-09-10AB3836338.1 ppb
2019-09-10AB3836437.0 ppb
2019-09-10AB38361ND
2019-12-09AB4055034.2 ppb
2019-12-09AB4054725.8 ppb
2019-12-09AB405493.32 ppb
2019-12-09AB40548ND