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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

City of Puyallup

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.

 

189

Samples

0

Samples exceeding legal limit (MCL)

31

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20123.92 ppb296ND - 31.4 ppb
20134.50 ppb327ND - 38.5 ppb
20142.73 ppb326ND - 34.9 ppb
20151.38 ppb324ND - 14.9 ppb
20161.000 ppb324ND - 11.6 ppb
20171.03 ppb324ND - 10.7 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
2012-02-0280950ND
2012-02-02809549.10 ppb
2012-02-0280951ND
2012-02-0280952ND
2012-02-0280953ND
2012-05-2481250ND
2012-05-2481249ND
2012-05-248125331.4 ppb
2012-05-2481251ND
2012-05-2481255ND
2012-05-2471252ND
2012-05-2481248ND
2012-05-2481254ND
2012-08-0681508ND
2012-08-078151328.9 ppb
2012-08-0781515ND
2012-08-0781509ND
2012-08-0781511ND
2012-08-0781512ND
2012-08-0781514ND
2012-08-0781510ND
2012-11-148188016.0 ppb
2012-11-1481876ND
2012-11-14818791.30 ppb
2012-11-1481875ND
2012-11-1481881ND
2012-11-1481878ND
2012-11-148188227.0 ppb
2012-11-1481877ND
2013-03-2182074ND
2013-03-2182069ND
2013-03-2182071ND
2013-03-218207236.7 ppb
2013-03-2182067ND
2013-03-2182068ND
2013-03-2182073ND
2013-03-2182070ND
2013-05-2382207ND
2013-05-2382210ND
2013-05-2382206ND
2013-05-238221128.1 ppb
2013-05-23822091.000 ppb
2013-05-2382212ND
2013-05-2382208ND
2013-06-0382216ND
2013-08-0682406ND
2013-08-0682407ND
2013-08-0682409ND
2013-08-0682410ND
2013-08-068241229.0 ppb
2013-08-0682411ND
2013-08-0682413ND
2013-08-0682408ND
2013-11-21828459.70 ppb
2013-11-2182844ND
2013-11-218284838.5 ppb
2013-11-2182843ND
2013-11-21828461.10 ppb
2013-11-2182842ND
2013-11-2182841ND
2013-11-2182847ND
2014-02-1182935ND
2014-02-1182936ND
2014-02-11829306.50 ppb
2014-02-1182931ND
2014-02-1182932ND
2014-02-1182934ND
2014-02-1182929ND
2014-02-1182933ND
2014-05-0683058ND
2014-05-0683062ND
2014-05-06830571.70 ppb
2014-05-0683061ND
2014-05-0683055ND
2014-05-0683056ND
2014-05-0683060ND
2014-05-0683059ND
2014-08-0883388ND
2014-08-088339134.9 ppb
2014-08-0883384ND
2014-08-0883386ND
2014-08-0883385ND
2014-08-0883389ND
2014-08-0883390ND
2014-08-08833874.80 ppb
2014-11-1783817ND
2014-11-1783815ND
2014-11-1783822ND
2014-11-1783820ND
2014-11-1783821ND
2014-11-1783818ND
2014-11-178381921.5 ppb
2014-11-178381618.0 ppb
2015-02-1083976ND
2015-02-1083980ND
2015-02-1083981ND
2015-02-1083978ND
2015-02-1083975ND
2015-02-1083977ND
2015-02-1083979ND
2015-02-108398214.9 ppb
2015-05-0784160ND
2015-05-0784162ND
2015-05-0784159ND
2015-05-0784156ND
2015-05-0784157ND
2015-05-0784155ND
2015-05-0784158ND
2015-05-07841619.70 ppb
2015-08-0584413ND
2015-08-0584414ND
2015-08-0584410ND
2015-08-0584416ND
2015-08-0584409ND
2015-08-0584415ND
2015-08-0584411ND
2015-08-05844128.00 ppb
2015-11-1084739ND
2015-11-1084740ND
2015-11-1084741ND
2015-11-1084738ND
2015-11-1084743ND
2015-11-1084736ND
2015-11-1084737ND
2015-11-108474211.5 ppb
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-027.10 ppb
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-044.30 ppb
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-08-09ND
2016-08-09ND
2016-08-09ND
2016-08-09ND
2016-08-09ND
2016-08-09ND
2016-08-0911.6 ppb
2016-08-09ND
2016-11-14ND
2016-11-14ND
2016-11-14ND
2016-11-14ND
2016-11-149.00 ppb
2016-11-14ND
2016-11-14ND
2016-11-14ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-067.80 ppb
2017-05-25ND
2017-05-25ND
2017-05-25ND
2017-05-25ND
2017-05-258.80 ppb
2017-05-25ND
2017-05-25ND
2017-05-25ND
2017-08-01ND
2017-08-01ND
2017-08-01ND
2017-08-01ND
2017-08-0110.7 ppb
2017-08-01ND
2017-08-01ND
2017-08-01ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-135.60 ppb
2017-11-13ND