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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

South Bend Water Works

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

 

90

Samples

0

Samples exceeding legal limit (MCL)

56

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.97 ppb2417ND - 6.20 ppb
20151.98 ppb2412ND - 8.60 ppb
20161.84 ppb189ND - 5.30 ppb
20172.20 ppb127ND - 7.00 ppb
20184.95 ppb443.80 ppb - 7.50 ppb
20192.68 ppb87ND - 4.40 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
2014-01-102955741ND
2014-01-1029557311.40 ppb
2014-01-1029557331.40 ppb
2014-01-1029557351.30 ppb
2014-01-102955739ND
2014-01-1029557371.50 ppb
2014-04-0930048562.40 ppb
2014-04-0930048543.20 ppb
2014-04-0930048522.60 ppb
2014-04-093004850ND
2014-04-093004848ND
2014-04-0930048461.20 ppb
2014-07-0930589694.40 ppb
2014-07-0930589631.70 ppb
2014-07-0930589651.000 ppb
2014-07-093058967ND
2014-07-0930589715.60 ppb
2014-07-0930589734.50 ppb
2014-10-0831189296.00 ppb
2014-10-0831189276.20 ppb
2014-10-0831189251.20 ppb
2014-10-083118923ND
2014-10-083118921ND
2014-10-0831189191.70 ppb
2015-01-1331686361.10 ppb
2015-01-1331686321.10 ppb
2015-01-133168630ND
2015-01-133168628ND
2015-01-133168626ND
2015-01-1331686341.20 ppb
2015-04-1332228493.10 ppb
2015-04-1332228473.90 ppb
2015-04-1332228511.80 ppb
2015-04-133222853ND
2015-04-133222855ND
2015-04-133222857ND
2015-07-1332779158.60 ppb
2015-07-1332779136.30 ppb
2015-07-1332779116.20 ppb
2015-07-133277909ND
2015-07-133277907ND
2015-07-133277905ND
2015-10-073336303ND
2015-10-0733363096.00 ppb
2015-10-0733363113.80 ppb
2015-10-073336301ND
2015-10-073336305ND
2015-10-0733363074.50 ppb
2016-04-113427893-34278993.60 ppb
2016-04-113427892-34278983.50 ppb
2016-04-113427891-34278973.80 ppb
2016-04-113427890-3427896ND
2016-04-113427889-3427895ND
2016-04-113427888-3427894ND
2016-07-1134891013.10 ppb
2016-07-1134890994.80 ppb
2016-07-1134890972.90 ppb
2016-07-113489095ND
2016-07-113489093ND
2016-07-113489091ND
2016-10-0735611335.30 ppb
2016-10-0735611353.40 ppb
2016-10-073561137ND
2016-10-073561139ND
2016-10-073561141ND
2016-10-0735611312.70 ppb
2017-01-1036181492.90 ppb
2017-01-103618147ND
2017-01-1036181452.70 ppb
2017-01-103618143ND
2017-01-103618141ND
2017-01-103618139ND
2017-04-1136708557.00 ppb
2017-04-1136708533.50 ppb
2017-07-103728498ND
2017-07-1237305182.90 ppb
2017-10-1037964653.40 ppb
2017-10-1037964634.00 ppb
2018-07-0939819003.80 ppb
2018-07-0939819027.50 ppb
2018-10-0940825814.60 ppb
2018-10-0940825833.90 ppb
2019-01-1041692483.40 ppb
2019-01-1041692503.30 ppb
2019-04-0842518802.30 ppb
2019-04-0842518822.60 ppb
2019-07-094346810ND
2019-07-0943468122.90 ppb
2019-10-0744460524.40 ppb
2019-10-0744460542.50 ppb