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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Greenville Utilities Comm.

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

 

200

Samples

0

Samples exceeding legal limit (MCL)

200

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201423.6 ppb323212.0 ppb - 30.0 ppb
201522.1 ppb323211.0 ppb - 32.0 ppb
201629.4 ppb323215.0 ppb - 60.0 ppb
201727.2 ppb323215.0 ppb - 39.0 ppb
201827.8 ppb404016.0 ppb - 40.0 ppb
201920.8 ppb323212.0 ppb - 30.0 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
2014-03-1037729_14-0681517.0 ppb
2014-03-1037729_14-0681618.0 ppb
2014-03-1037729_14-0681713.0 ppb
2014-03-1037729_14-0681812.0 ppb
2014-03-1037729_14-0681920.0 ppb
2014-03-1037729_14-0682014.0 ppb
2014-03-1037729_14-0682118.0 ppb
2014-03-1037729_14-0682214.0 ppb
2014-06-0937729_14-1637123.0 ppb
2014-06-0937729_14-1637222.0 ppb
2014-06-0937729_14-1637321.0 ppb
2014-06-0937729_14-1637428.0 ppb
2014-06-0937729_14-1637517.0 ppb
2014-06-0937729_14-1637625.0 ppb
2014-06-0937729_14-1637721.0 ppb
2014-06-0937729_14-1637825.0 ppb
2014-09-0937729_14-2734830.0 ppb
2014-09-0937729_14-2734928.0 ppb
2014-09-0937729_14-2735028.0 ppb
2014-09-0937729_14-2735129.0 ppb
2014-09-0937729_14-2735226.0 ppb
2014-09-0937729_14-2735328.0 ppb
2014-09-0937729_14-2735429.0 ppb
2014-09-0937729_14-2735527.0 ppb
2014-12-1137729_14-3769230.0 ppb
2014-12-1137729_14-3769328.0 ppb
2014-12-1137729_14-3769430.0 ppb
2014-12-1137729_14-3769528.0 ppb
2014-12-1137729_14-3769626.0 ppb
2014-12-1137729_14-3769728.0 ppb
2014-12-1137729_14-3769825.0 ppb
2014-12-1137729_14-3769926.0 ppb
2015-03-1214.0 ppb
2015-03-1213.0 ppb
2015-03-1214.0 ppb
2015-03-1211.0 ppb
2015-03-1211.0 ppb
2015-03-1212.0 ppb
2015-03-1211.0 ppb
2015-03-1213.0 ppb
2015-06-1628.0 ppb
2015-06-1628.0 ppb
2015-06-1632.0 ppb
2015-06-1632.0 ppb
2015-06-1626.0 ppb
2015-06-1629.0 ppb
2015-06-1629.0 ppb
2015-06-1628.0 ppb
2015-09-0823.0 ppb
2015-09-0819.0 ppb
2015-09-0821.0 ppb
2015-09-0827.0 ppb
2015-09-0826.0 ppb
2015-09-0831.0 ppb
2015-09-0827.0 ppb
2015-09-0828.0 ppb
2015-12-1425.0 ppb
2015-12-1422.0 ppb
2015-12-1420.0 ppb
2015-12-1421.0 ppb
2015-12-1419.0 ppb
2015-12-1422.0 ppb
2015-12-1423.0 ppb
2015-12-1421.0 ppb
2016-03-0737729_16-0713323.0 ppb
2016-03-0737729_16-0713621.0 ppb
2016-03-0737729_16-0713720.0 ppb
2016-03-0737729_16-0713821.0 ppb
2016-03-0737729_16-0713923.0 ppb
2016-03-0737729_16-0714022.0 ppb
2016-03-0737729_16-0714115.0 ppb
2016-03-0737729_16-0714216.0 ppb
2016-06-0637729_16-1771329.0 ppb
2016-06-0637729_16-1771430.0 ppb
2016-06-0637729_16-1771531.0 ppb
2016-06-0637729_16-1771629.0 ppb
2016-06-0637729_16-1771730.0 ppb
2016-06-0637729_16-1771828.0 ppb
2016-06-0637729_16-1771929.0 ppb
2016-06-0637729_16-1772029.0 ppb
2016-09-1537729_16-3276446.0 ppb
2016-09-1537729_16-3276841.0 ppb
2016-09-1537729_16-3276944.0 ppb
2016-09-1537729_16-3277051.0 ppb
2016-09-1537729_16-3277141.0 ppb
2016-09-1537729_16-3277260.0 ppb
2016-09-1537729_16-3277353.0 ppb
2016-09-1537729_16-3277442.0 ppb
2016-12-1537729_16-4375421.0 ppb
2016-12-1537729_16-4377720.0 ppb
2016-12-1537729_16-4377821.0 ppb
2016-12-1537729_16-4377919.0 ppb
2016-12-1537729_16-4378021.0 ppb
2016-12-1537729_16-4378122.0 ppb
2016-12-1537729_16-4378221.0 ppb
2016-12-1537729_16-4378323.0 ppb
2017-03-1637729_17-0902019.0 ppb
2017-03-1637729_17-0902520.0 ppb
2017-03-1637729_17-0902818.0 ppb
2017-03-1637729_17-0902916.0 ppb
2017-03-1637729_17-0903119.0 ppb
2017-03-1637729_17-0903615.0 ppb
2017-03-1637729_17-0903917.0 ppb
2017-03-1637729_17-0904019.0 ppb
2017-06-1537729_17-2045131.0 ppb
2017-06-1537729_17-2045235.0 ppb
2017-06-1537729_17-2045331.0 ppb
2017-06-1537729_17-2045439.0 ppb
2017-06-1537729_17-2045529.0 ppb
2017-06-1537729_17-2045636.0 ppb
2017-06-1537729_17-2045733.0 ppb
2017-06-1537729_17-2045835.0 ppb
2017-09-0737729_17-3293134.0 ppb
2017-09-0737729_17-3294335.0 ppb
2017-09-0737729_17-3294434.0 ppb
2017-09-0737729_17-3294535.0 ppb
2017-09-0737729_17-3294638.0 ppb
2017-09-0737729_17-3294735.0 ppb
2017-09-0737729_17-3294835.0 ppb
2017-09-0737729_17-3294939.0 ppb
2017-12-1437729_17-4766621.0 ppb
2017-12-1437729_17-4766720.0 ppb
2017-12-1437729_17-4766821.0 ppb
2017-12-1437729_17-4766920.0 ppb
2017-12-1437729_17-4767020.0 ppb
2017-12-1437729_17-4767125.0 ppb
2017-12-1437729_17-4767222.0 ppb
2017-12-1437729_17-4767323.0 ppb
2018-03-1537729_18-10423 21.0 ppb
2018-03-1537729_18-10424 18.0 ppb
2018-03-1537729_18-10425 19.0 ppb
2018-03-1537729_18-10426 16.0 ppb
2018-03-1537729_18-10427 21.0 ppb
2018-03-1537729_18-10428 20.0 ppb
2018-03-1537729_18-10429 20.0 ppb
2018-03-1537729_18-10430 21.0 ppb
2018-06-0737729_18-22974 36.0 ppb
2018-06-0737729_18-22975 35.0 ppb
2018-06-0737729_18-22976 38.0 ppb
2018-06-0737729_18-22977 40.0 ppb
2018-06-0737729_18-22978 30.0 ppb
2018-06-0737729_18-22979 40.0 ppb
2018-06-0737729_18-22980 37.0 ppb
2018-06-0737729_18-22981 39.0 ppb
2018-09-1037729_18-38431 30.0 ppb
2018-09-1037729_18-38432 31.0 ppb
2018-09-1037729_18-38433 32.0 ppb
2018-09-1037729_18-38434 26.0 ppb
2018-09-1037729_18-38435 29.0 ppb
2018-09-1037729_18-38436 30.0 ppb
2018-09-1037729_18-38437 30.0 ppb
2018-09-1037729_18-38438 28.0 ppb
2018-09-204064426 33.8 ppb
2018-09-204064427 33.4 ppb
2018-09-204064428 35.1 ppb
2018-09-204064429 34.3 ppb
2018-09-204064430 35.9 ppb
2018-09-204064431 36.0 ppb
2018-09-204064432 36.7 ppb
2018-09-204064433 37.3 ppb
2018-12-2037729_18-53506 18.0 ppb
2018-12-2037729_18-53507 19.0 ppb
2018-12-2037729_18-53508 18.0 ppb
2018-12-2037729_18-53509 18.0 ppb
2018-12-2037729_18-53510 18.0 ppb
2018-12-2037729_18-53511 16.0 ppb
2018-12-2037729_18-53512 17.0 ppb
2018-12-2037729_18-53513 17.0 ppb
2019-03-1437729_19-10932 19.0 ppb
2019-03-1437729_19-10943 18.0 ppb
2019-03-1437729_19-10944 18.0 ppb
2019-03-1437729_19-10945 16.0 ppb
2019-03-1437729_19-10946 21.0 ppb
2019-03-1437729_19-10947 21.0 ppb
2019-03-1437729_19-10948 18.0 ppb
2019-03-1437729_19-10949 19.0 ppb
2019-06-0637729_19-23349 22.0 ppb
2019-06-0637729_19-23350 12.0 ppb
2019-06-0637729_19-23351 30.0 ppb
2019-06-0637729_19-23352 21.0 ppb
2019-06-0637729_19-23353 23.0 ppb
2019-06-0637729_19-23354 24.0 ppb
2019-06-0637729_19-23355 24.0 ppb
2019-06-0637729_19-23356 30.0 ppb
2019-09-1237729_19-39499 23.0 ppb
2019-09-1237729_19-39500 21.0 ppb
2019-09-1237729_19-39501 26.0 ppb
2019-09-1237729_19-39502 25.0 ppb
2019-09-1237729_19-39503 30.0 ppb
2019-09-1237729_19-39504 30.0 ppb
2019-09-1237729_19-39505 25.0 ppb
2019-09-1237729_19-39506 27.0 ppb
2019-12-1237729_19-53326 15.0 ppb
2019-12-1237729_19-53327 15.0 ppb
2019-12-1237729_19-53328 15.0 ppb
2019-12-1237729_19-53329 15.0 ppb
2019-12-1237729_19-53330 16.0 ppb
2019-12-1237729_19-53331 15.0 ppb
2019-12-1237729_19-53332 14.0 ppb
2019-12-1237729_19-53333 16.0 ppb