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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Florence Township 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

 

88

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
20150.0233 ppb121ND - 0.280 ppb
20160.0169 ppb161ND - 0.270 ppb
2017ND120ND
2018ND160ND
20190.869 ppb161ND - 13.9 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 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
2014-01-31L4860934-1ND
2014-01-31L4860934-2ND
2014-01-31L4860934-3ND
2014-01-31L4860934-4ND
2014-04-29L4974330-2ND
2014-04-29L4974330-3ND
2014-04-29L4974330-1ND
2014-04-29L4974330-4ND
2014-07-29L5104813-2ND
2014-07-29L5104813-3ND
2014-07-29L5104813-1ND
2014-07-29L5104813-4ND
2014-10-24L5241417-3ND
2014-10-24L5241417-2ND
2014-10-24L5241417-1ND
2014-10-24L5241417-4ND
2015-01-29L5357647-4ND
2015-01-29L5357647-2ND
2015-01-29L5357647-1ND
2015-01-29L5357647-3ND
2015-04-27L5490724-4ND
2015-04-27L5490724-1ND
2015-04-27L5490724-2ND
2015-04-27L5490724-3ND
2015-10-26L5809070-40.280 ppb
2015-10-26L5809070-1ND
2015-10-26L5809070-2ND
2015-10-26L5809070-3ND
2016-01-29L5969396-1ND
2016-01-29L5969396-2ND
2016-01-29L5969396-30.270 ppb
2016-01-29L5969396-4ND
2016-04-253437316ND
2016-04-253437318ND
2016-04-253437319ND
2016-04-253437317ND
2016-07-293511709ND
2016-07-293511708ND
2016-07-293511711ND
2016-07-293511710ND
2016-10-283577548ND
2016-10-283577546ND
2016-10-283577549ND
2016-10-293577547ND
2017-05-263702777ND
2017-05-263702776ND
2017-05-263702775ND
2017-05-263702778ND
2017-07-263743343ND
2017-07-263743342ND
2017-07-263743341ND
2017-07-313746806ND
2017-11-083819004ND
2017-11-083819006ND
2017-11-083819005ND
2017-11-083819003ND
2018-01-303863806ND
2018-01-303863804ND
2018-01-303863805ND
2018-01-303863803ND
2018-04-233921950ND
2018-04-233921947ND
2018-04-233921949ND
2018-04-233921948ND
2018-07-244003637ND
2018-07-244003640ND
2018-07-244003639ND
2018-07-244003638ND
2018-10-304105854ND
2018-10-304105855ND
2018-10-304105856ND
2018-10-304105853ND
2019-01-224183007ND
2019-01-22418300413.9 ppb
2019-01-224183006ND
2019-01-224183005ND
2019-04-224268566ND
2019-04-224268569ND
2019-04-224268568ND
2019-04-224268567ND
2019-07-224367015ND
2019-07-224367012ND
2019-07-224367013ND
2019-07-224367014ND
2019-10-234467661ND
2019-10-234467662ND
2019-10-234467663ND
2019-10-234467664ND