Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Haloacetic acids (HAA5)

Golden State Water Company - West Orange

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

70

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20143.52 ppb3216ND - 21.0 ppb
20153.41 ppb3212ND - 22.0 ppb
20161.33 ppb326ND - 13.0 ppb
20172.95 ppb3214ND - 18.0 ppb
20182.21 ppb3213ND - 8.10 ppb
20191.62 ppb329ND - 12.0 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
2014-01-312706-801-1100ND
2014-01-312706-802-0900ND
2014-01-312706-803-1030ND
2014-01-312706-804-1015ND
2014-01-312706-805-1000ND
2014-01-312706-806-09201.000 ppb
2014-01-312706-807-0935ND
2014-01-312706-808-090711.0 ppb
2014-04-082706-801-1010ND
2014-04-082706-802-08503.60 ppb
2014-04-082706-803-10303.00 ppb
2014-04-082706-804-10552.20 ppb
2014-04-082706-805-0947ND
2014-04-082706-806-09123.10 ppb
2014-04-082706-807-0930ND
2014-04-082706-808-094113.0 ppb
2014-07-082706-801-09101.30 ppb
2014-07-082706-802-08503.90 ppb
2014-07-082706-803-10253.00 ppb
2014-07-082706-804-10454.70 ppb
2014-07-082706-805-100519.0 ppb
2014-07-082706-806-09254.40 ppb
2014-07-082706-807-09404.50 ppb
2014-07-082706-808-094821.0 ppb
2014-10-072706-808-103014.0 ppb
2014-10-082706-801-1015ND
2014-10-082706-802-0830ND
2014-10-082706-803-0950ND
2014-10-082706-804-0930ND
2014-10-082706-805-0910ND
2014-10-082706-806-0845ND
2014-10-082706-807-0855ND
2015-01-132706-801-0915ND
2015-01-132706-802-0850ND
2015-01-132706-803-1011ND
2015-01-132706-804-10301.000 ppb
2015-01-132706-805-10482.30 ppb
2015-01-132706-806-09502.70 ppb
2015-01-132706-807-0935ND
2015-01-132706-808-113514.0 ppb
2015-04-142706-801-1015ND
2015-04-142706-802-1150ND
2015-04-142706-803-0925ND
2015-04-142706-804-09401.10 ppb
2015-04-142706-805-100511.0 ppb
2015-04-142706-806-1045ND
2015-04-142706-807-1030ND
2015-04-142706-808-143812.0 ppb
2015-07-140007-801-112019.0 ppb
2015-07-140007-802-0845ND
2015-07-140007-803-1050ND
2015-07-140007-804-1025ND
2015-07-140007-805-1010ND
2015-07-140007-806-0910ND
2015-07-140007-807-0940ND
2015-07-140007-808-135022.0 ppb
2015-10-132706-808-090012.0 ppb
2015-10-142706-801-090011.0 ppb
2015-10-142706-802-0840ND
2015-10-142706-803-1000ND
2015-10-142706-804-10151.10 ppb
2015-10-142706-805-0945ND
2015-10-142706-806-0915ND
2015-10-142706-807-0930ND
2016-01-132706-801-1012ND
2016-01-132706-802-0856ND
2016-01-132706-803-1050ND
2016-01-132706-804-1103ND
2016-01-132706-805-1118ND
2016-01-132706-806-0952ND
2016-01-132706-807-0937ND
2016-01-132706-808-10309.70 ppb
2016-04-122706-801-0859ND
2016-04-122706-802-0842ND
2016-04-122706-803-1008ND
2016-04-122706-804-1020ND
2016-04-122706-805-1040ND
2016-04-122706-806-0916ND
2016-04-122706-807-0935ND
2016-04-122706-808-10356.50 ppb
2016-07-122706-801-08505.50 ppb
2016-07-122706-802-0831ND
2016-07-122706-803-1020ND
2016-07-122706-804-10061.30 ppb
2016-07-122706-805-0945ND
2016-07-122706-806-0912ND
2016-07-122706-807-0930ND
2016-07-122706-808-074913.0 ppb
2016-10-112706-801-0910ND
2016-10-112706-802-0845ND
2016-10-112706-803-1030ND
2016-10-112706-804-1045ND
2016-10-112706-805-1010ND
2016-10-112706-806-0948ND
2016-10-112706-807-0932ND
2016-10-112706-808-09306.40 ppb
2017-01-119590-801-0920ND
2017-01-119590-802-0900ND
2017-01-119590-803-1058ND
2017-01-119590-804-1030ND
2017-01-119590-805-1110ND
2017-01-119590-806-0945ND
2017-01-119590-807-1001ND
2017-01-119590-808-09404.10 ppb
2017-04-119590-801-0850ND
2017-04-119590-802-0830ND
2017-04-119590-803-0955ND
2017-04-119590-804-1015ND
2017-04-119590-805-0940ND
2017-04-119590-806-0912ND
2017-04-119590-807-0925ND
2017-04-119590-808-100118.0 ppb
2017-07-119590-801-08514.20 ppb
2017-07-119590-802-0835ND
2017-07-119590-803-10062.70 ppb
2017-07-119590-804-10303.30 ppb
2017-07-119590-805-09455.10 ppb
2017-07-119590-806-0910ND
2017-07-119590-807-0925ND
2017-07-119590-808-09008.00 ppb
2017-10-119590-801-09087.50 ppb
2017-10-119590-802-08357.40 ppb
2017-10-119590-803-1010ND
2017-10-119590-804-09473.30 ppb
2017-10-119590-805-10387.50 ppb
2017-10-119590-806-11277.80 ppb
2017-10-119590-807-11027.70 ppb
2017-10-119590-808-09407.90 ppb
2018-01-099590-801-08483.60 ppb
2018-01-099590-802-08307.20 ppb
2018-01-099590-803-09357.00 ppb
2018-01-099590-804-09508.10 ppb
2018-01-099590-805-10207.50 ppb
2018-01-099590-806-09066.30 ppb
2018-01-099590-807-09186.00 ppb
2018-01-099590-808-09255.60 ppb
2018-04-109590-801-0905ND
2018-04-109590-802-0842ND
2018-04-109590-803-1015ND
2018-04-109590-804-1035ND
2018-04-109590-805-0956ND
2018-04-109590-806-0921ND
2018-04-109590-807-0940ND
2018-04-109590-808-08503.70 ppb
2018-07-109590-801-0830ND
2018-07-109590-802-0815ND
2018-07-109590-803-10004.60 ppb
2018-07-109590-804-09403.30 ppb
2018-07-109590-805-0925ND
2018-07-109590-806-0846ND
2018-07-109590-807-0905ND
2018-07-109590-808-08503.20 ppb
2018-10-099590-801-1049ND
2018-10-099590-802-0922ND
2018-10-099590-803-1144ND
2018-10-099590-804-1128ND
2018-10-099590-805-1205ND
2018-10-099590-806-0952ND
2018-10-099590-807-1019ND
2018-10-099590-808-09154.70 ppb
2019-01-089590-801-08513.00 ppb
2019-01-089590-802-0836ND
2019-01-089590-803-1000ND
2019-01-089590-804-1016ND
2019-01-089590-805-0945ND
2019-01-089590-806-0913ND
2019-01-089590-807-0931ND
2019-01-089590-808-08404.00 ppb
2019-04-099590-801-103012.0 ppb
2019-04-099590-802-1005ND
2019-04-099590-803-0910ND
2019-04-099590-804-08402.20 ppb
2019-04-099590-805-0940ND
2019-04-099590-806-1100ND
2019-04-099590-807-1125ND
2019-04-099590-808-09088.00 ppb
2019-07-099590-801-08406.70 ppb
2019-07-099590-802-0820ND
2019-07-099590-803-0942ND
2019-07-099590-804-1005ND
2019-07-099590-805-1025ND
2019-07-099590-806-0900ND
2019-07-099590-807-0920ND
2019-07-099590-808-10006.10 ppb
2019-10-089590-801-08485.60 ppb
2019-10-089590-802-0826ND
2019-10-089590-803-1010ND
2019-10-089590-804-1031ND
2019-10-089590-805-0951ND
2019-10-089590-806-0910ND
2019-10-089590-807-0930ND
2019-10-089590-808-10304.30 ppb