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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

New Britain Water Department

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

 

194

Samples

0

Samples exceeding legal limit (MCL)

193

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20147.94 ppb32324.00 ppb - 15.0 ppb
20159.06 ppb32322.00 ppb - 32.0 ppb
20169.44 ppb32325.00 ppb - 18.0 ppb
20177.42 ppb3332ND - 16.0 ppb
201811.3 ppb33334.60 ppb - 17.8 ppb
20199.14 ppb32323.50 ppb - 19.0 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
2014-02-182038-02816CH4.00 ppb
2014-02-182039-02817CH6.00 ppb
2014-02-182040-02818CH6.00 ppb
2014-02-182041-02819CH6.00 ppb
2014-02-182043-02820CH5.00 ppb
2014-02-182044-02821CH5.00 ppb
2014-02-182045-02822CH7.00 ppb
2014-02-182046-02823CH5.00 ppb
2014-05-156640-02869CH7.00 ppb
2014-05-156641-02870CH6.00 ppb
2014-05-156642-02871CH6.00 ppb
2014-05-156643-02872CH7.00 ppb
2014-05-156645-02873CH5.00 ppb
2014-05-156646-02874CH7.00 ppb
2014-05-156647-02875CH7.00 ppb
2014-05-156648-02876CH6.00 ppb
2014-08-2612867-03013CH6.00 ppb
2014-08-2612868-03014CH8.00 ppb
2014-08-2612869-03015CH10.00 ppb
2014-08-2612870-03016CH7.00 ppb
2014-08-2612872-03017CH7.00 ppb
2014-08-2612873-03019CH9.00 ppb
2014-08-2612874-03018CH9.00 ppb
2014-08-2612875-03020CH9.00 ppb
2014-11-2518554-03121CH11.0 ppb
2014-11-2518555-03122CH9.00 ppb
2014-11-2518556-03123CH9.00 ppb
2014-11-2518557-03124CH10.00 ppb
2014-11-2518559-03125CH13.0 ppb
2014-11-2518560-03126CH15.0 ppb
2014-11-2518561-03127CH13.0 ppb
2014-11-2518562-03128CH14.0 ppb
2015-02-181837-03174CH6.00 ppb
2015-02-181832-03170CH7.00 ppb
2015-02-181836-03173CH9.00 ppb
2015-02-181839-03176CH7.00 ppb
2015-02-181838-03175CH7.00 ppb
2015-02-181833-03171CH8.00 ppb
2015-02-181831-03169CH5.00 ppb
2015-02-181834-03172CH7.00 ppb
2015-05-227391-03231CH6.00 ppb
2015-05-227392-03237CH10.00 ppb
2015-05-227394-03233CH9.00 ppb
2015-05-227397-03236CH9.00 ppb
2015-05-227395-03234CH11.0 ppb
2015-05-227390-03230CH10.00 ppb
2015-05-227389-03229CH12.0 ppb
2015-05-227396-03235CH8.00 ppb
2015-08-1912412-03347CH12.0 ppb
2015-08-1912414-03349CH12.0 ppb
2015-08-1912407-03343CH12.0 ppb
2015-08-1912409-03345CH14.0 ppb
2015-08-1912415-03350CH9.00 ppb
2015-08-1912408-03344CH15.0 ppb
2015-08-1912410-03346CH13.0 ppb
2015-08-1912413-03348CH32.0 ppb
2015-11-1817411-03424CH5.00 ppb
2015-11-1817415-03427CH6.00 ppb
2015-11-1817414-03426CH4.00 ppb
2015-11-1817416-03428CH7.00 ppb
2015-11-1817408-03421CH2.00 ppb
2015-11-1817413-03425CH2.00 ppb
2015-11-1817409-03422CH5.00 ppb
2015-11-1817410-03423CH9.00 ppb
2016-02-172382-03483CH9.00 ppb
2016-02-172383-03484CH9.00 ppb
2016-02-172384-03485CH10.00 ppb
2016-02-172385-03486CH10.00 ppb
2016-02-172387-03487CH8.00 ppb
2016-02-172388-03488CH9.00 ppb
2016-02-172389-03489CH9.00 ppb
2016-02-172390-03490CH10.00 ppb
2016-05-197548-03552CH5.00 ppb
2016-05-197549-03553CH8.00 ppb
2016-05-197550-03554CH9.00 ppb
2016-05-197551-03555CH7.00 ppb
2016-05-197553-03556CH5.00 ppb
2016-05-197554-03557CH6.00 ppb
2016-05-197555-03558CH10.00 ppb
2016-05-197556-03559CH8.00 ppb
2016-08-1812521-03642CH14.0 ppb
2016-08-1812522-03643CH16.0 ppb
2016-08-1812523-03644CH16.0 ppb
2016-08-1812524-03645CH17.0 ppb
2016-08-1812526-03646CH14.0 ppb
2016-08-1812527-03647CH18.0 ppb
2016-08-1812528-03648CH14.0 ppb
2016-08-1812529-03649CH12.0 ppb
2016-11-2817592-03706CH5.00 ppb
2016-11-2817593-03707CH7.00 ppb
2016-11-2817594-03708CH8.00 ppb
2016-11-2817595-03709CH5.00 ppb
2016-11-2817597-03710CH5.00 ppb
2016-11-2817598-03711CH5.00 ppb
2016-11-2817599-03712CH7.00 ppb
2016-11-2817600-03713CH7.00 ppb
2017-02-171920-03779CH1.000 ppb
2017-02-171921-03780CH1.000 ppb
2017-02-171922-03781CH4.00 ppb
2017-02-171923-03782CH1.000 ppb
2017-02-171925-03783CHND
2017-02-171926-03784CH2.00 ppb
2017-02-171928-03785CH2.00 ppb
2017-02-171927-03880CH2.00 ppb
2017-05-105576-03833CH3.00 ppb
2017-05-105577-03834CH6.00 ppb
2017-05-105578-03835CH7.00 ppb
2017-05-105579-03836CH6.00 ppb
2017-05-105581-03837CH4.00 ppb
2017-05-105582-03838CH5.00 ppb
2017-05-105583-03839CH7.00 ppb
2017-05-105584-03840CH5.00 ppb
2017-08-16DBP 20047470311.7 ppb
2017-08-16DBP 20047470411.3 ppb
2017-08-16DBP 20047470513.9 ppb
2017-08-16DBP 20047470616.0 ppb
2017-08-16DBP 20047470714.0 ppb
2017-08-16DBP 2004747085.30 ppb
2017-08-16DBP 20047470911.0 ppb
2017-08-16DBP 2004747103.30 ppb
2017-11-15DBP 20048217311.6 ppb
2017-11-15DBP 2004821749.70 ppb
2017-11-15DBP 20048217511.6 ppb
2017-11-15DBP 20048217612.9 ppb
2017-11-15DBP 20048217711.9 ppb
2017-11-15DBP 2004821789.70 ppb
2017-11-15DBP 20048217910.5 ppb
2017-11-15DBP 20048218013.4 ppb
2017-11-15DBP 20048218110.9 ppb
2018-02-22DBP 2004885808.50 ppb
2018-02-22DBP 2004885817.20 ppb
2018-02-22DBP 2004885829.50 ppb
2018-02-22DBP 20048858310.00 ppb
2018-02-22DBP 2004885848.60 ppb
2018-02-22DBP 20048858511.2 ppb
2018-02-22DBP 20048858613.9 ppb
2018-02-22DBP 20048858712.1 ppb
2018-05-16DBP 2004948889.20 ppb
2018-05-16DBP 2004948898.10 ppb
2018-05-16DBP 20049489010.6 ppb
2018-05-16DBP 20049489111.9 ppb
2018-05-16DBP 2004948929.50 ppb
2018-05-16DBP 2004948939.60 ppb
2018-05-16DBP 20049489412.6 ppb
2018-05-16DBP 20049489512.3 ppb
2018-08-14DBP 20050230017.8 ppb
2018-08-14DBP 20050230116.1 ppb
2018-08-14DBP 20050230217.6 ppb
2018-08-14DBP 20050230317.5 ppb
2018-08-14DBP 20050230417.0 ppb
2018-08-14DBP 2005023059.50 ppb
2018-08-14DBP 20050230610.7 ppb
2018-08-14DBP 2005023074.60 ppb
2018-11-14DBP 20051264511.4 ppb
2018-11-14DBP 20051264610.4 ppb
2018-11-14DBP 20051264713.1 ppb
2018-11-14DBP 20051264811.3 ppb
2018-11-14DBP 20051264912.0 ppb
2018-11-14DBP 2005126506.80 ppb
2018-11-14DBP 2005126519.40 ppb
2018-11-14DBP 20051265212.2 ppb
2018-11-14DBP 20051265411.6 ppb
2019-02-20DBP 2005222975.60 ppb
2019-02-20DBP 2005222985.20 ppb
2019-02-20DBP 2005222997.70 ppb
2019-02-20DBP 2005223008.00 ppb
2019-02-20DBP 2005223016.10 ppb
2019-02-20DBP 2005223026.80 ppb
2019-02-20DBP 2005223038.30 ppb
2019-02-20DBP 2005223046.90 ppb
2019-05-16DBP 2005325625.50 ppb
2019-05-16DBP 2005325634.60 ppb
2019-05-16DBP 2005325646.10 ppb
2019-05-16DBP 2005325655.80 ppb
2019-05-16DBP 2005325666.50 ppb
2019-05-16DBP 2005325673.50 ppb
2019-05-16DBP 2005325686.10 ppb
2019-05-16DBP 2005325697.60 ppb
2019-08-20DBP 20054557419.0 ppb
2019-08-20DBP 20054557513.1 ppb
2019-08-20DBP 20054557617.2 ppb
2019-08-20DBP 20054557718.0 ppb
2019-08-20DBP 20054557818.2 ppb
2019-08-20DBP 20054557914.3 ppb
2019-08-20DBP 20054558015.1 ppb
2019-08-20DBP 2005455813.90 ppb
2019-11-21DBP 2005576898.20 ppb
2019-11-21DBP 2005576907.00 ppb
2019-11-21DBP 2005576919.40 ppb
2019-11-21DBP 20055769210.4 ppb
2019-11-21DBP 2005576939.80 ppb
2019-11-21DBP 2005576947.70 ppb
2019-11-21DBP 20055769510.9 ppb
2019-11-21DBP 20055769610.00 ppb