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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

Cedar Rapids 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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20136.00 ppb116.00 ppb
2014N/A00N/A
2015N/A00N/A
2016ND160ND
2017ND160ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2013-06-1319847696.00 ppb
2016-03-08OE353815ND
2016-03-08OE353814ND
2016-03-08OE353812ND
2016-03-08OE353813ND
2016-06-01OE383965ND
2016-06-01OE383964ND
2016-06-01OE383963ND
2016-06-01OE383962ND
2016-09-07OE425338ND
2016-09-07OE425337ND
2016-09-07OE425339ND
2016-09-07OE425340ND
2016-12-07OE459328ND
2016-12-07OE459325ND
2016-12-07OE459326ND
2016-12-07OE459327ND
2017-03-08OE488548ND
2017-03-08OE488551ND
2017-03-08OE488552ND
2017-03-08OE488550ND
2017-06-05OE521326ND
2017-06-05OE521329ND
2017-06-05OE521327ND
2017-06-05OE521324ND
2017-09-06OE561486ND
2017-09-06OE561485ND
2017-09-06OE561487ND
2017-09-06OE561488ND
2017-12-12OE600503ND
2017-12-12OE600502ND
2017-12-12OE600501ND
2017-12-12OE600500ND