Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Haloacetic acids (HAA5)

Chautauqua Utility District

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

 

54

Samples

0

Samples exceeding legal limit (MCL)

54

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201413.6 ppb14142.00 ppb - 24.9 ppb
201516.1 ppb8813.1 ppb - 19.6 ppb
201614.2 ppb889.60 ppb - 19.6 ppb
201720.9 ppb8814.8 ppb - 29.8 ppb
201824.3 ppb8810.9 ppb - 31.3 ppb
201928.4 ppb8820.3 ppb - 36.3 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
2014-02-13FEB2014 WWTP CUD17.5 ppb
2014-02-13FEB2014 TURNER B24.9 ppb
2014-05-15MAY2014 WWTP15.9 ppb
2014-05-15MAY2014 TURNER B23.0 ppb
2014-05-15MAY2014 WWTP TOT15.9 ppb
2014-05-15MAY2014 TURNER T23.0 ppb
2014-08-14AUG 2014 TURNER13.6 ppb
2014-08-14AUG14 WWTP TOTAL16.7 ppb
2014-08-14AUG14 TURNER TOT13.6 ppb
2014-08-14AUG 2014 WWTP16.7 ppb
2014-11-06NOV14 CUD WWTP2.00 ppb
2014-11-06NOV14 TURNER TOT2.89 ppb
2014-11-06NOV14 WWTP TOTAL2.00 ppb
2014-11-06NOV14 TURNER-CUD2.89 ppb
2015-02-19FEB2015 WWTP TOT15.7 ppb
2015-02-19FEB15 WWTP-CUD15.7 ppb
2015-02-19FEB15 TURNER TOT18.1 ppb
2015-02-19FEB2015 TURNER B18.2 ppb
2015-05-28MAY 2015 WWTP DB13.1 ppb
2015-05-28MAY2015 TURNER B14.0 ppb
2015-08-20AUG15CUD TURNER19.6 ppb
2015-08-20AUG15 CUD WWTP14.3 ppb
2016-02-24FEB16 CUD-TURNER19.2 ppb
2016-02-24FEB15 CUD-WWTP13.3 ppb
2016-05-18MAY2016 TURNER B19.6 ppb
2016-05-18MAY16 WWTP CUD15.5 ppb
2016-08-03AUG16 WASTEWATER12.9 ppb
2016-08-03AUG16 TURNER BLD11.6 ppb
2016-11-16NOV16 WWTP9.60 ppb
2016-11-16NOV16 TURNER BLD11.6 ppb
2017-02-15FEB17 WWTP CUD23.9 ppb
2017-02-15FEB2017 TURNER C26.0 ppb
2017-05-03MAY17 DBPS CUD22.9 ppb
2017-05-03MAY17 DBPS CUD #29.8 ppb
2017-08-023RDQT17 WWTP17.6 ppb
2017-08-023RDQT17 TURNER B15.4 ppb
2017-11-15NOV17 DBP TURNER16.6 ppb
2017-11-15NOV17 WASTERWATE14.8 ppb
2018-02-07Q1 CUD 18 WWTP24.0 ppb
2018-02-07Q1CUD 18 TURNER28.7 ppb
2018-05-02Q2 CUD 18 WWTP27.1 ppb
2018-05-02Q2 CUD 18 TURNER27.1 ppb
2018-08-01Q3 CUD 18 TURNER23.3 ppb
2018-08-01Q3 CUD 18 WWTP21.7 ppb
2018-11-20Q4 18 WWTP DBPS10.9 ppb
2018-11-20Q4 18 TURNER DBP31.3 ppb
2019-02-20Q1 19 TURNER DBP31.8 ppb
2019-02-20Q1 19 WWTP DBPS28.4 ppb
2019-05-01Q2 19 WWTP DBPS36.3 ppb
2019-05-01Q2 19 TURNER DBP30.5 ppb
2019-08-07Q3 19 WWTP DBPS23.2 ppb
2019-08-07Q3 19 TURNER DBP20.3 ppb
2019-11-06Q4 19 WWTP DBPS26.4 ppb
2019-11-06Q4 19 TURNER DBP30.3 ppb