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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

Lee County WSC

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20132.85 ppb442.00 ppb - 3.70 ppb
20142.09 ppb168ND - 16.8 ppb
20151.41 ppb169ND - 5.20 ppb
20161.67 ppb168ND - 7.70 ppb
20171.56 ppb1611ND - 4.50 ppb

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
2013-10-14Q13088540042.90 ppb
2013-10-14Q13088540033.70 ppb
2013-10-14Q13088540022.00 ppb
2013-10-14Q13088540012.80 ppb
2014-02-25AC44498ND
2014-02-25AC44479ND
2014-02-25AC444772.00 ppb
2014-02-25AC44480ND
2014-05-13AC540501.70 ppb
2014-05-13AC540493.50 ppb
2014-05-13AC54047ND
2014-05-13AC540481.60 ppb
2014-08-14AC638071.80 ppb
2014-08-14AC637953.30 ppb
2014-08-14AC6379216.8 ppb
2014-08-14AC637962.80 ppb
2014-12-08AC73988ND
2014-12-08AC73987ND
2014-12-08AC73981ND
2014-12-08AC73982ND
2015-03-04AC826621.10 ppb
2015-03-04AC826663.90 ppb
2015-03-04AC82734ND
2015-03-04AC82665ND
2015-06-17AC962401.10 ppb
2015-06-17AC962534.10 ppb
2015-06-17AC96252ND
2015-06-17AC962512.10 ppb
2015-09-01AD05131ND
2015-09-01AD051395.20 ppb
2015-09-01AD05137ND
2015-09-01AD051451.000 ppb
2015-11-13AD135462.40 ppb
2015-11-13AD13549ND
2015-11-13AD13550ND
2015-11-13AD135851.70 ppb
2016-01-27AD203441.20 ppb
2016-01-27AD20346ND
2016-01-27AD203453.00 ppb
2016-01-27AD20347ND
2016-04-12AD327651.10 ppb
2016-04-12AD327683.60 ppb
2016-04-12AD32766ND
2016-04-12AD327701.60 ppb
2016-07-26AD45662ND
2016-07-26AD456674.00 ppb
2016-07-26AD45665ND
2016-07-26AD45660ND
2016-10-31AD55457ND
2016-10-31AD55452ND
2016-10-31AD554534.50 ppb
2016-10-31AD554547.70 ppb
2017-01-30AD67510ND
2017-01-30AD675112.00 ppb
2017-01-30AD67506ND
2017-01-30AD67509ND
2017-04-11AD791801.000 ppb
2017-05-04AD827301.20 ppb
2017-05-04AD827313.40 ppb
2017-05-04AD82732ND
2017-07-24AD903264.50 ppb
2017-07-24AD903273.50 ppb
2017-07-24AD90322ND
2017-07-24AD903231.10 ppb
2017-10-04AD992351.70 ppb
2017-10-04AD992363.60 ppb
2017-10-04AD992311.40 ppb
2017-10-04AD992431.50 ppb