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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Los Lunas 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.

MORE ABOUT THIS CONTAMINANT

 

72

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
20150.316 ppb84ND - 1.60 ppb
20160.239 ppb163ND - 1.80 ppb
20170.950 ppb167ND - 3.90 ppb
20180.446 ppb165ND - 2.00 ppb
20190.473 ppb165ND - 1.90 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
2015-07-2920150217190.520 ppb
2015-07-2920150217210.310 ppb
2015-07-2920150217170.1000 ppb
2015-07-2920150217161.60 ppb
2015-11-041511215-001BND
2015-11-041511213-001BND
2015-11-041511221-001BND
2015-11-041511217-001BND
2016-02-251602A77-001AND
2016-02-251602A75-001AND
2016-02-251602A76-001AND
2016-02-251602A74-001AND
2016-04-1120160101651.80 ppb
2016-04-112016010166ND
2016-04-112016010167ND
2016-04-112016010168ND
2016-07-072016019230ND
2016-07-072016019231ND
2016-07-072016019228ND
2016-07-0720160192291.20 ppb
2016-10-112016029467ND
2016-10-112016029465ND
2016-10-112016029466ND
2016-10-1120160294640.830 ppb
2017-01-0420170001713.90 ppb
2017-01-0420170001703.30 ppb
2017-01-0420170001681.80 ppb
2017-01-0420170001691.60 ppb
2017-04-0420170096180.910 ppb
2017-04-042017009615ND
2017-04-042017009616ND
2017-04-042017009617ND
2017-07-1220170199210.790 ppb
2017-07-122017019920ND
2017-07-122017019922ND
2017-07-122017019923ND
2017-10-102017029141ND
2017-10-1020170291422.90 ppb
2017-10-102017029139ND
2017-10-102017029140ND
2018-01-172018001598ND
2018-01-1720180015970.870 ppb
2018-01-172018001596ND
2018-01-172018001595ND
2018-04-112018010250ND
2018-04-112018010247ND
2018-04-112018010248ND
2018-04-1120180102492.00 ppb
2018-07-102018018580ND
2018-07-102018018579ND
2018-07-1020180185781.80 ppb
2018-07-102018018577ND
2018-10-0320180283521.90 ppb
2018-10-032018028353ND
2018-10-032018028354ND
2018-10-0320180283550.560 ppb
2019-01-082019000454ND
2019-01-0820190004550.770 ppb
2019-01-0820190004561.90 ppb
2019-01-082019000457ND
2019-04-032019008329ND
2019-04-032019008332ND
2019-04-032019008331ND
2019-04-0320190083301.50 ppb
2019-07-152019019199ND
2019-07-1520190192011.70 ppb
2019-07-152019019200ND
2019-07-152019019198ND
2019-10-162019029569ND
2019-10-162019029568ND
2019-10-162019029567ND
2019-10-1620190295661.70 ppb