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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

City of Auburn

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.

 

168

Samples

0

Samples exceeding legal limit (MCL)

87

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.75 ppb106ND - 10.7 ppb
20135.19 ppb3217ND - 43.5 ppb
20143.05 ppb3214ND - 19.9 ppb
20151.93 ppb3217ND - 8.60 ppb
20161.23 ppb3112ND - 12.8 ppb
20172.12 ppb3121ND - 10.6 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 on-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
2012-08-01814701.30 ppb
2012-08-01814681.30 ppb
2012-11-0181849ND
2012-11-0181850ND
2012-11-0181852ND
2012-11-01818488.10 ppb
2012-11-0181847ND
2012-11-01818511.50 ppb
2012-11-018185310.7 ppb
2012-11-01818464.60 ppb
2013-02-07820034.20 ppb
2013-02-0782001ND
2013-02-0782005ND
2013-02-0781998ND
2013-02-078200410.2 ppb
2013-02-078199912.6 ppb
2013-02-0782002ND
2013-02-0782000ND
2013-05-0882149ND
2013-05-08821536.20 ppb
2013-05-08821543.50 ppb
2013-05-08821566.50 ppb
2013-05-0882151ND
2013-05-0882155ND
2013-05-08821527.20 ppb
2013-05-08821501.30 ppb
2013-08-08824481.70 ppb
2013-08-08824511.30 ppb
2013-08-08824504.40 ppb
2013-08-0882444ND
2013-08-0882452ND
2013-08-0882447ND
2013-08-0882449ND
2013-08-08824455.20 ppb
2013-11-078278825.8 ppb
2013-11-078278318.0 ppb
2013-11-0782787ND
2013-11-078278243.5 ppb
2013-11-0782785ND
2013-11-07827861.10 ppb
2013-11-0782789ND
2013-11-078278413.4 ppb
2014-02-1182944ND
2014-02-11829403.10 ppb
2014-02-1182941ND
2014-02-1182943ND
2014-02-1182939ND
2014-02-1182937ND
2014-02-1182942ND
2014-02-1182938ND
2014-05-0783066ND
2014-05-07830701.20 ppb
2014-05-07830731.70 ppb
2014-05-078306918.1 ppb
2014-05-0783068ND
2014-05-07830721.50 ppb
2014-05-07830711.40 ppb
2014-05-07830671.70 ppb
2014-08-28835286.50 ppb
2014-08-2883527ND
2014-08-28835201.000 ppb
2014-08-2883524ND
2014-08-2883523ND
2014-08-288352219.9 ppb
2014-08-2883526ND
2014-08-288352119.0 ppb
2014-11-18838256.50 ppb
2014-11-1883829ND
2014-11-1883828ND
2014-11-1883832ND
2014-11-1883826ND
2014-11-18838317.30 ppb
2014-11-1883830ND
2014-11-18838278.70 ppb
2015-02-1183983ND
2015-02-1183990ND
2015-02-11839843.50 ppb
2015-02-1183985ND
2015-02-11839862.80 ppb
2015-02-11839893.80 ppb
2015-02-1183987ND
2015-02-1183988ND
2015-05-2184204ND
2015-05-2184205ND
2015-05-21842002.60 ppb
2015-05-2184203ND
2015-05-21842022.90 ppb
2015-05-21842062.40 ppb
2015-05-21842011.10 ppb
2015-05-2184207ND
2015-09-1684585ND
2015-09-1684588ND
2015-09-16845834.30 ppb
2015-09-16845821.40 ppb
2015-09-16845844.60 ppb
2015-09-16845864.30 ppb
2015-09-16845891.20 ppb
2015-09-16845872.80 ppb
2015-11-0584704ND
2015-11-0584705ND
2015-11-0584700ND
2015-11-0584703ND
2015-11-05847028.30 ppb
2015-11-05847068.60 ppb
2015-11-05847011.000 ppb
2015-11-05847076.00 ppb
2016-02-1012.8 ppb
2016-02-10ND
2016-02-101.30 ppb
2016-02-103.10 ppb
2016-02-10ND
2016-02-10ND
2016-02-102.40 ppb
2016-06-02ND
2016-06-02ND
2016-06-02ND
2016-06-021.10 ppb
2016-06-02ND
2016-06-02ND
2016-06-021.50 ppb
2016-06-021.20 ppb
2016-08-101.000 ppb
2016-08-10ND
2016-08-10ND
2016-08-10ND
2016-08-10ND
2016-08-102.90 ppb
2016-08-104.00 ppb
2016-08-10ND
2016-11-03ND
2016-11-03ND
2016-11-03ND
2016-11-03ND
2016-11-03ND
2016-11-031.30 ppb
2016-11-03ND
2016-11-035.60 ppb
2017-03-221.40 ppb
2017-03-222.80 ppb
2017-03-22ND
2017-03-221.10 ppb
2017-03-222.60 ppb
2017-03-227.40 ppb
2017-03-221.30 ppb
2017-03-221.20 ppb
2017-05-041.70 ppb
2017-05-041.20 ppb
2017-05-042.40 ppb
2017-05-041.60 ppb
2017-05-04ND
2017-05-044.90 ppb
2017-05-041.10 ppb
2017-05-04ND
2017-08-15ND
2017-08-156.70 ppb
2017-08-152.50 ppb
2017-08-157.90 ppb
2017-08-151.20 ppb
2017-08-151.90 ppb
2017-08-151.40 ppb
2017-08-15ND
2017-11-15ND
2017-11-15ND
2017-11-15ND
2017-11-1510.6 ppb
2017-11-152.80 ppb
2017-11-15ND
2017-11-15ND