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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

Sunny Slope Water Company

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.

 

68

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND40ND
20140.0688 ppb161ND - 1.10 ppb
2015ND160ND
20160.1000 ppb161ND - 1.60 ppb
20170.575 ppb162ND - 5.50 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
2013-10-319588-801-1055ND
2013-10-319588-800-1130ND
2013-10-319588-802-1150ND
2013-10-319588-803-1110ND
2014-01-319588-800-1250ND
2014-01-319588-802-1225ND
2014-01-319588-801-1155ND
2014-01-319588-803-1210ND
2014-04-309588-802-1005ND
2014-04-309588-801-1030ND
2014-04-309588-803-1045ND
2014-04-309588-800-1015ND
2014-07-319588-802-0930ND
2014-07-319588-803-0850ND
2014-07-319588-801-0900ND
2014-07-319588-800-0915ND
2014-10-319588-800-1135ND
2014-10-319588-802-1155ND
2014-10-319588-803-11051.10 ppb
2014-10-319588-801-1115ND
2015-01-299588-802-0940ND
2015-01-299588-800-0940ND
2015-01-299588-803-0925ND
2015-01-299588-801-0915ND
2015-04-309588-801-0840ND
2015-04-309588-802-0815ND
2015-04-309588-803-0850ND
2015-04-309588-800-0825ND
2015-07-319588-803-1030ND
2015-07-319588-800-1045ND
2015-07-319588-801-1020ND
2015-07-319588-802-1100ND
2015-10-299588-801-1135ND
2015-10-299588-803-1145ND
2015-10-299588-802-1215ND
2015-10-299588-800-1200ND
2016-01-289588-803-1105ND
2016-01-289588-800-1120ND
2016-01-289588-801-1055ND
2016-01-289588-802-1135ND
2016-04-289588-801-1040ND
2016-04-289588-802-1115ND
2016-04-289588-800-1100ND
2016-04-289588-803-1050ND
2016-07-289588-801-0915ND
2016-07-289588-800-09451.60 ppb
2016-07-289588-803-0930ND
2016-07-289588-802-1000ND
2016-10-289588-803-1025ND
2016-10-289588-802-1110ND
2016-10-289588-800-1050ND
2016-10-289588-801-1035ND
2017-01-309588-800-10405.50 ppb
2017-01-309588-802-1050ND
2017-01-309588-803-1015ND
2017-01-309588-801-1030ND
2017-04-289588-802-1105ND
2017-04-289588-801-1015ND
2017-04-289588-800-10503.70 ppb
2017-04-289588-803-1030ND
2017-07-319588-802-1110ND
2017-07-319588-803-1140ND
2017-07-319588-800-1120ND
2017-07-319588-801-1150ND
2017-10-319588-800-1100ND
2017-10-319588-801-1025ND
2017-10-319588-803-1035ND
2017-10-319588-802-1120ND