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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

City of Corona

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

 

201

Samples

0

Samples exceeding legal limit (MCL)

125

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20142.77 ppb3517ND - 12.0 ppb
20152.71 ppb3217ND - 10.00 ppb
20164.73 ppb2214ND - 13.0 ppb
20175.13 ppb3225ND - 13.0 ppb
20185.23 ppb4027ND - 26.0 ppb
20194.55 ppb4025ND - 15.0 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
2014-03-039590-019-1345ND
2014-03-039590-036-1430ND
2014-03-039590-041-1505ND
2014-03-039590-801-131512.0 ppb
2014-03-039590-802-1510ND
2014-03-039590-803-1229ND
2014-03-039590-804-1026ND
2014-03-039590-805-1305ND
2014-03-039590-806-1435ND
2014-03-039590-807-08554.10 ppb
2014-03-039590-808-1135ND
2014-06-029590-801-120011.0 ppb
2014-06-029590-802-1045ND
2014-06-029590-803-08255.00 ppb
2014-06-029590-804-08504.90 ppb
2014-06-029590-805-0920ND
2014-06-029590-806-12305.60 ppb
2014-06-029590-807-09502.80 ppb
2014-06-029590-808-10207.00 ppb
2014-09-159590-801-130010.00 ppb
2014-09-159590-802-14003.70 ppb
2014-09-159590-803-08152.70 ppb
2014-09-159590-804-09102.10 ppb
2014-09-159590-805-0935ND
2014-09-159590-806-13306.20 ppb
2014-09-159590-807-10104.40 ppb
2014-09-159590-808-11305.30 ppb
2014-12-159590-801-14206.90 ppb
2014-12-159590-802-1340ND
2014-12-159590-803-0850ND
2014-12-159590-804-0920ND
2014-12-159590-805-0950ND
2014-12-159590-807-10203.10 ppb
2014-12-159590-808-1135ND
2014-12-159590-809-1040ND
2015-03-099590-801-12508.80 ppb
2015-03-099590-802-12302.30 ppb
2015-03-099590-803-0900ND
2015-03-099590-804-0935ND
2015-03-099590-805-1015ND
2015-03-099590-807-10402.00 ppb
2015-03-099590-808-1320ND
2015-03-099590-809-11102.00 ppb
2015-06-089590-801-14509.30 ppb
2015-06-089590-802-1420ND
2015-06-089590-803-09003.30 ppb
2015-06-089590-804-09402.30 ppb
2015-06-089590-805-1010ND
2015-06-089590-807-10402.90 ppb
2015-06-089590-808-13406.30 ppb
2015-06-089590-809-11002.90 ppb
2015-09-179590-801-112010.00 ppb
2015-09-179590-802-1100ND
2015-09-179590-803-0815ND
2015-09-179590-804-0840ND
2015-09-179590-805-0900ND
2015-09-179590-807-09103.30 ppb
2015-09-179590-808-10404.00 ppb
2015-09-179590-809-102010.00 ppb
2015-12-239590-801-10158.70 ppb
2015-12-239590-802-1130ND
2015-12-239590-803-0910ND
2015-12-239590-804-0945ND
2015-12-239590-805-0930ND
2015-12-239590-807-15104.30 ppb
2015-12-239590-808-1420ND
2015-12-239590-809-14404.20 ppb
2016-03-099590-801-10256.70 ppb
2016-03-099590-802-1050ND
2016-03-099590-803-1110ND
2016-03-099590-804-0840ND
2016-03-099590-805-0910ND
2016-03-099590-807-13302.60 ppb
2016-03-099590-808-1440ND
2016-03-099590-809-14002.90 ppb
2016-06-099590-801-115113.0 ppb
2016-06-099590-802-1045ND
2016-06-099590-803-08277.10 ppb
2016-06-099590-804-08526.40 ppb
2016-06-099590-805-09107.00 ppb
2016-06-099590-807-09368.20 ppb
2016-06-099590-808-10289.90 ppb
2016-06-099590-809-100610.00 ppb
2016-09-139590-802-1350ND
2016-09-139590-808-14509.30 ppb
2016-09-139590-809-14408.90 ppb
2016-12-159590-802-1350ND
2016-12-159590-808-10106.00 ppb
2016-12-159590-809-09506.10 ppb
2017-03-169590-801-09007.00 ppb
2017-03-169590-802-0950ND
2017-03-169590-803-1120ND
2017-03-169590-804-10302.00 ppb
2017-03-169590-805-1100ND
2017-03-169590-807-152012.0 ppb
2017-03-169590-808-142013.0 ppb
2017-03-169590-809-144012.0 ppb
2017-06-159590-801-11206.90 ppb
2017-06-159590-802-1540ND
2017-06-159590-803-09204.70 ppb
2017-06-159590-804-09455.70 ppb
2017-06-159590-805-10104.20 ppb
2017-06-159590-807-13404.40 ppb
2017-06-159590-808-14305.70 ppb
2017-06-159590-809-14004.60 ppb
2017-09-139590-801-110012.0 ppb
2017-09-139590-802-1400ND
2017-09-139590-803-08507.20 ppb
2017-09-139590-804-09107.80 ppb
2017-09-139590-805-09307.30 ppb
2017-09-139590-807-10004.70 ppb
2017-09-139590-808-14406.80 ppb
2017-09-139590-809-15204.60 ppb
2017-12-149590-801-13509.10 ppb
2017-12-149590-802-1450ND
2017-12-149590-803-08302.60 ppb
2017-12-149590-804-0855ND
2017-12-149590-805-09253.90 ppb
2017-12-149590-807-09454.10 ppb
2017-12-149590-808-10205.90 ppb
2017-12-149590-809-10105.80 ppb
2018-03-229590-801-1020ND
2018-03-229590-802-1100ND
2018-03-229590-803-0850ND
2018-03-229590-804-0910ND
2018-03-229590-805-0930ND
2018-03-229590-808-10103.80 ppb
2018-03-229590-809-09507.40 ppb
2018-03-289590-807-15306.80 ppb
2018-06-144790-801-140516.0 ppb
2018-06-144790-802-14354.10 ppb
2018-06-144790-803-09507.60 ppb
2018-06-144790-804-10109.00 ppb
2018-06-144790-805-10357.40 ppb
2018-06-144790-807-110511.0 ppb
2018-06-144790-808-121012.0 ppb
2018-06-144790-809-113510.00 ppb
2018-09-139590-801-110010.00 ppb
2018-09-139590-802-10403.20 ppb
2018-09-139590-803-08305.80 ppb
2018-09-139590-804-08505.30 ppb
2018-09-139590-805-09105.60 ppb
2018-09-139590-807-09404.50 ppb
2018-09-139590-808-10207.00 ppb
2018-09-139590-809-10007.40 ppb
2018-12-134790-801-11207.20 ppb
2018-12-139590-801-112026.0 ppb
2018-12-134790-802-12107.20 ppb
2018-12-139590-802-12107.00 ppb
2018-12-134790-803-0845ND
2018-12-139590-803-0845ND
2018-12-134790-804-0910ND
2018-12-139590-804-0910ND
2018-12-134790-805-0945ND
2018-12-139590-805-0945ND
2018-12-134790-807-10307.00 ppb
2018-12-139590-807-10306.20 ppb
2018-12-134790-808-13002.60 ppb
2018-12-139590-808-1300ND
2018-12-134790-809-13502.10 ppb
2018-12-139590-809-1350ND
2019-03-144790-801-111015.0 ppb
2019-03-149590-801-11109.00 ppb
2019-03-144790-802-124010.00 ppb
2019-03-149590-802-12408.90 ppb
2019-03-144790-803-0800ND
2019-03-149590-803-0800ND
2019-03-144790-804-0830ND
2019-03-149590-804-0830ND
2019-03-144790-805-0850ND
2019-03-149590-805-0850ND
2019-03-144790-807-09209.80 ppb
2019-03-149590-807-09208.80 ppb
2019-03-144790-808-1030ND
2019-03-149590-808-1030ND
2019-03-144790-809-0950ND
2019-03-149590-809-0950ND
2019-06-179590-801-093510.00 ppb
2019-06-179590-803-11154.20 ppb
2019-06-179590-804-11305.10 ppb
2019-06-179590-805-10504.90 ppb
2019-06-179590-807-10206.70 ppb
2019-06-189590-802-1440ND
2019-06-189590-808-14256.60 ppb
2019-06-189590-809-14007.00 ppb
2019-09-169590-801-13409.60 ppb
2019-09-169590-802-15107.30 ppb
2019-09-169590-803-11405.80 ppb
2019-09-169590-804-12156.10 ppb
2019-09-169590-805-11555.00 ppb
2019-09-169590-807-12404.00 ppb
2019-09-169590-808-13177.30 ppb
2019-09-169590-809-12578.10 ppb
2019-12-129590-801-082511.0 ppb
2019-12-129590-802-0910ND
2019-12-129590-803-1020ND
2019-12-129590-804-1000ND
2019-12-129590-807-11253.60 ppb
2019-12-129590-808-15053.70 ppb
2019-12-129590-809-12254.60 ppb
2019-12-309590-805-1450ND