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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

City of Aiken

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.

 

180

Samples

13

Samples exceeding legal limit (MCL)

113

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201214.0 ppb6432ND - 91.1 ppb
201320.6 ppb5229ND - 110.0 ppb
201416.8 ppb1612ND - 44.4 ppb
201515.7 ppb1614ND - 36.1 ppb
201613.9 ppb1613ND - 34.4 ppb
201717.7 ppb1613ND - 32.9 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 on-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
2012-02-292120301-1012.0 ppb
2012-02-292120301-11ND
2012-02-292120301-1217.2 ppb
2012-02-292120301-13ND
2012-02-292120301-14ND
2012-02-292120301-15ND
2012-02-292120301-16ND
2012-02-292120301-17ND
2012-02-292120301-266.7 ppb
2012-02-292120301-359.1 ppb
2012-02-292120301-41.20 ppb
2012-02-292120301-5ND
2012-02-292120301-63.56 ppb
2012-02-292120301-732.9 ppb
2012-02-292120301-8ND
2012-02-292120301-911.9 ppb
2012-06-132120614-2447.0 ppb
2012-06-132120614-2548.5 ppb
2012-06-132120614-2611.2 ppb
2012-06-132120614-27ND
2012-06-132120614-282.26 ppb
2012-06-132120614-294.10 ppb
2012-06-132120614-30ND
2012-06-132120614-3116.8 ppb
2012-06-132120614-3224.1 ppb
2012-06-132120614-33ND
2012-06-132120614-3434.0 ppb
2012-06-132120614-35ND
2012-06-132120614-36ND
2012-06-132120614-37ND
2012-06-132120614-38ND
2012-06-132120614-39ND
2012-09-122120913-11ND
2012-09-122120913-1267.1 ppb
2012-09-122120913-13ND
2012-09-122120913-148.24 ppb
2012-09-122120913-158.32 ppb
2012-09-122120913-16ND
2012-09-122120913-17ND
2012-09-122120913-277.5 ppb
2012-09-122120913-391.1 ppb
2012-09-122120913-413.6 ppb
2012-09-122120913-51.19 ppb
2012-09-122120913-628.8 ppb
2012-09-122120913-765.7 ppb
2012-09-122120913-8ND
2012-09-122120913-929.1 ppb
2012-09-132120913-10ND
2012-12-122121213-10ND
2012-12-122121213-11ND
2012-12-122121213-1224.9 ppb
2012-12-122121213-13ND
2012-12-122121213-14ND
2012-12-122121213-15ND
2012-12-122121213-16ND
2012-12-122121213-17ND
2012-12-122121213-227.7 ppb
2012-12-122121213-329.5 ppb
2012-12-122121213-4ND
2012-12-122121213-5ND
2012-12-122121213-67.73 ppb
2012-12-122121213-712.5 ppb
2012-12-122121213-8ND
2012-12-122121213-910.9 ppb
2013-03-273030015-01110.0 ppb
2013-03-273030015-0278.9 ppb
2013-03-273030015-031.000 ppb
2013-03-273030015-04ND
2013-03-273030015-0524.1 ppb
2013-03-273030015-0629.8 ppb
2013-03-273030015-07ND
2013-03-273030015-0811.8 ppb
2013-03-273030015-0921.8 ppb
2013-03-273030015-10ND
2013-03-273030015-1129.0 ppb
2013-03-273030015-12ND
2013-03-273030015-13ND
2013-03-273030015-14ND
2013-03-273030015-15ND
2013-03-273030015-16ND
2013-06-193060023-0165.2 ppb
2013-06-193060023-0280.8 ppb
2013-06-193060023-031.10 ppb
2013-06-193060023-04ND
2013-06-193060023-0526.1 ppb
2013-06-193060023-0673.7 ppb
2013-06-193060023-07ND
2013-06-193060023-0890.4 ppb
2013-06-193060023-0950.0 ppb
2013-06-193060023-10ND
2013-06-193060023-1162.3 ppb
2013-06-193060023-12ND
2013-06-193060023-13ND
2013-06-193060023-1462.3 ppb
2013-06-193060023-15ND
2013-06-193060023-16ND
2013-09-183090015-0125.7 ppb
2013-09-183090015-0225.8 ppb
2013-09-183090015-036.10 ppb
2013-09-183090015-04ND
2013-09-183090015-0520.8 ppb
2013-09-183090015-0633.8 ppb
2013-09-183090015-07ND
2013-09-183090015-0824.3 ppb
2013-09-183090015-0923.9 ppb
2013-09-183090015-10ND
2013-09-183090015-1122.1 ppb
2013-09-183090015-12ND
2013-09-183090015-13ND
2013-09-183090015-1423.8 ppb
2013-09-183090015-15ND
2013-09-183090015-16ND
2013-11-203110004-0128.8 ppb
2013-11-203110004-02ND
2013-11-203110004-033.70 ppb
2013-11-203110004-0416.6 ppb
2014-02-264020324-0132.7 ppb
2014-02-264020324-02ND
2014-02-264020324-037.10 ppb
2014-02-264020324-0420.1 ppb
2014-05-214050227-0144.4 ppb
2014-05-214050227-02ND
2014-05-214050227-0336.8 ppb
2014-05-214050227-0421.5 ppb
2014-08-204080430-0128.5 ppb
2014-08-204080430-02ND
2014-08-204080430-0330.8 ppb
2014-08-204080430-0426.4 ppb
2014-11-244110019-0114.1 ppb
2014-11-244110019-02ND
2014-11-244110019-031.10 ppb
2014-11-244110019-044.70 ppb
2015-02-255020019-0114.1 ppb
2015-02-255020019-02ND
2015-02-255020019-034.20 ppb
2015-02-255020019-0416.5 ppb
2015-05-205050006-0133.3 ppb
2015-05-205050006-02ND
2015-05-205050006-0330.8 ppb
2015-05-205050006-0424.8 ppb
2015-08-265080042-0136.1 ppb
2015-08-265080042-021.000 ppb
2015-08-265080042-0329.9 ppb
2015-08-265080042-0416.9 ppb
2015-11-245110026-0132.1 ppb
2015-11-245110026-022.60 ppb
2015-11-245110026-033.50 ppb
2015-11-245110026-045.20 ppb
2016-02-246020026-045.40 ppb
2016-02-246020026-0115.1 ppb
2016-02-246020026-021.20 ppb
2016-02-246020026-03ND
2016-05-256050026-0420.2 ppb
2016-05-256050026-0112.9 ppb
2016-05-256050026-02ND
2016-05-256050026-0319.7 ppb
2016-08-246080042-0434.4 ppb
2016-08-246080042-0134.0 ppb
2016-08-246080042-024.50 ppb
2016-08-246080042-0333.6 ppb
2016-11-226110006-0415.1 ppb
2016-11-226110006-0118.8 ppb
2016-11-226110006-02ND
2016-11-226110006-037.10 ppb
2017-02-227020006-0414.8 ppb
2017-02-227020006-0130.2 ppb
2017-02-227020006-02ND
2017-02-227020006-0325.5 ppb
2017-05-237050026-0414.0 ppb
2017-05-237050026-0130.7 ppb
2017-05-237050026-023.60 ppb
2017-05-237050026-0328.1 ppb
2017-08-227080025-0420.5 ppb
2017-08-227080025-0132.9 ppb
2017-08-227080025-02ND
2017-08-227080025-0327.8 ppb
2017-11-207110006-0415.7 ppb
2017-11-207110006-0122.2 ppb
2017-11-207110006-02ND
2017-11-207110006-0316.9 ppb