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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

Country Estates Water System South

NOTE: Country Estates Water System South purchases water from Better Waterworks Water System which is required to test for haloacetic acids (haa5). Sample information shown below was taken by Better Waterworks Water System.

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.

 

72

Samples

22

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201239.7 ppb446.80 ppb - 72.6 ppb
201326.5 ppb887.84 ppb - 46.2 ppb
201438.7 ppb1612ND - 94.9 ppb
201558.4 ppb161638.5 ppb - 85.6 ppb
201647.3 ppb12129.45 ppb - 76.9 ppb
201775.9 ppb4453.4 ppb - 87.9 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

NOTE: Country Estates Water System South purchases water from Better Waterworks Water System which is required to test for haloacetic acids (haa5). Sample information shown below was taken by Better Waterworks Water System.

Date Lab ID Result
2012-03-1211063316.80 ppb
2012-03-1211063316.80 ppb
2012-07-31113841472.6 ppb
2012-07-31113841472.6 ppb
2013-05-08120797846.2 ppb
2013-05-08120797846.2 ppb
2013-05-08120797743.7 ppb
2013-05-08120797743.7 ppb
2013-08-1412323738.25 ppb
2013-08-1412323747.84 ppb
2013-08-1412323738.25 ppb
2013-08-1412323747.84 ppb
2014-02-18127920622.1 ppb
2014-02-18127920721.2 ppb
2014-02-18127920622.1 ppb
2014-02-18127920721.2 ppb
2014-05-13130070541.5 ppb
2014-05-13130070643.2 ppb
2014-05-13130070643.2 ppb
2014-05-13130070541.5 ppb
2014-08-121325218ND
2014-08-121325218ND
2014-08-121325217ND
2014-08-121325217ND
2014-11-21135245886.7 ppb
2014-11-21135245794.9 ppb
2014-11-21135245886.7 ppb
2014-11-21135245794.9 ppb
2015-02-16137319185.6 ppb
2015-02-16137319185.6 ppb
2015-02-16137319068.1 ppb
2015-02-16137319068.1 ppb
2015-05-05139298859.0 ppb
2015-05-05139298955.2 ppb
2015-05-05139298859.0 ppb
2015-05-05139298955.2 ppb
2015-08-26142224257.5 ppb
2015-08-26142224257.5 ppb
2015-08-26142224159.8 ppb
2015-08-26142224159.8 ppb
2015-11-03144123243.4 ppb
2015-11-03144123338.5 ppb
2015-11-03144123338.5 ppb
2015-11-03144123243.4 ppb
2016-02-17146829963.2 ppb
2016-02-17146829849.8 ppb
2016-02-17146829963.2 ppb
2016-02-17146829849.8 ppb
2016-08-1815183529.45 ppb
2016-08-18151835115.2 ppb
2016-08-1815183529.45 ppb
2016-08-18151835115.2 ppb
2016-11-16154221376.9 ppb
2016-11-16154221376.9 ppb
2016-11-16154221269.4 ppb
2016-11-16154221269.4 ppb
2017-02-013529258200841.8 ppb
2017-02-013529258200754.9 ppb
2017-02-013529258200754.9 ppb
2017-02-013529258200841.8 ppb
2017-05-053531061801220.1 ppb
2017-05-053531061801220.1 ppb
2017-05-253531465000160.2 ppb
2017-05-253531465000160.2 ppb
2017-08-023532800200527.4 ppb
2017-08-023532800200624.8 ppb
2017-08-023532800200624.8 ppb
2017-08-023532800200527.4 ppb
2017-11-023534616500175.2 ppb
2017-11-023534616500175.2 ppb
2017-11-023534616500283.7 ppb
2017-11-023534616500283.7 ppb