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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

City of Glendale

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

 

288

Samples

0

Samples exceeding legal limit (MCL)

249

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20147.32 ppb4833ND - 15.5 ppb
20158.54 ppb4840ND - 17.1 ppb
20169.65 ppb4839ND - 20.6 ppb
201712.1 ppb4847ND - 20.2 ppb
20189.95 ppb4842ND - 18.7 ppb
201911.6 ppb48485.20 ppb - 18.0 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
2014-03-121403120730G5414.5 ppb
2014-03-121403120740G5013.1 ppb
2014-03-121403120805G45ND
2014-03-121403120820G4014.3 ppb
2014-03-121403120830G3910.4 ppb
2014-03-121403120840G3813.9 ppb
2014-03-121403120850G3413.0 ppb
2014-03-121403120935G1710.5 ppb
2014-03-121403120940G088.60 ppb
2014-03-121403120950G0113.7 ppb
2014-03-121403121015G0311.1 ppb
2014-03-121403121030G1210.5 ppb
2014-06-101406100855G549.60 ppb
2014-06-101406100905G5010.9 ppb
2014-06-101406100915G456.80 ppb
2014-06-101406100925G409.70 ppb
2014-06-101406100935G3810.6 ppb
2014-06-101406100940G3910.7 ppb
2014-06-101406100955G34ND
2014-06-101406101010G17ND
2014-06-101406101015G08ND
2014-06-101406101020G01ND
2014-06-101406101035G03ND
2014-06-101406101045G12ND
2014-09-091409091030G125.30 ppb
2014-09-091409091045G035.40 ppb
2014-09-091409091100G01ND
2014-09-091409091110G08ND
2014-09-091409091115G17ND
2014-09-091409091155G34ND
2014-09-091409091205G3810.3 ppb
2014-09-091409091215G399.30 ppb
2014-09-091409091225G4013.1 ppb
2014-09-091409091240G45ND
2014-09-091409091255G50ND
2014-09-091409091300G5411.8 ppb
2014-12-091412090903G12ND
2014-12-091412090921G036.20 ppb
2014-12-091412090947G016.50 ppb
2014-12-091412090959G086.50 ppb
2014-12-091412091011G177.80 ppb
2014-12-091412091040G34ND
2014-12-091412091107G3815.5 ppb
2014-12-091412091119G3913.2 ppb
2014-12-091412091147G4013.3 ppb
2014-12-091412091211G4514.4 ppb
2014-12-091412091237G506.50 ppb
2014-12-091412091255G5414.4 ppb
2015-03-101503100934G12ND
2015-03-101503100954G0314.9 ppb
2015-03-101503101013G0114.2 ppb
2015-03-101503101025G087.00 ppb
2015-03-101503101035G1712.3 ppb
2015-03-101503101055G3412.0 ppb
2015-03-101503101110G3910.1 ppb
2015-03-101503101121G3813.1 ppb
2015-03-101503101137G40ND
2015-03-101503101152G4514.0 ppb
2015-03-101503101208G5413.7 ppb
2015-03-101503101218G5012.4 ppb
2015-06-091506090905G036.90 ppb
2015-06-091506090930G016.30 ppb
2015-06-091506090945G085.70 ppb
2015-06-091506090955G176.60 ppb
2015-06-091506091025G12ND
2015-06-091506091135G346.20 ppb
2015-06-091506091200G386.00 ppb
2015-06-091506091210G396.80 ppb
2015-06-091506091220G409.60 ppb
2015-06-091506091240G455.60 ppb
2015-06-091506091255G5011.0 ppb
2015-06-091506091310G549.20 ppb
2015-09-091509091244G34ND
2015-09-091509091309G385.20 ppb
2015-09-091509091317G12ND
2015-09-091509091324G398.60 ppb
2015-09-091509091333G035.00 ppb
2015-09-091509091337G407.00 ppb
2015-09-091509091347G015.00 ppb
2015-09-091509091358G457.30 ppb
2015-09-091509091403G08ND
2015-09-091509091415G175.50 ppb
2015-09-091509091418G50ND
2015-09-091509091434G5411.8 ppb
2015-12-081512080945G0110.4 ppb
2015-12-081512081000G0310.3 ppb
2015-12-081512081015G1212.4 ppb
2015-12-081512081035G0812.7 ppb
2015-12-081512081045G1711.7 ppb
2015-12-081512081100G3416.0 ppb
2015-12-081512081115G3913.9 ppb
2015-12-081512081125G3816.1 ppb
2015-12-081512081135G4017.1 ppb
2015-12-081512081150G45ND
2015-12-081512081200G5014.6 ppb
2015-12-081512081210G5415.7 ppb
2016-03-081603080930G1212.2 ppb
2016-03-081603081007G0312.3 ppb
2016-03-081603081030G0111.5 ppb
2016-03-081603081044G0815.2 ppb
2016-03-081603081059G1711.5 ppb
2016-03-081603081117G347.50 ppb
2016-03-081603081135G3820.6 ppb
2016-03-081603081150G3918.1 ppb
2016-03-081603081204G4018.2 ppb
2016-03-081603081242G45ND
2016-03-081603081257G5016.2 ppb
2016-03-081603081309G5418.8 ppb
2016-06-071606070935G126.10 ppb
2016-06-071606070950G035.50 ppb
2016-06-071606071004G017.30 ppb
2016-06-071606071035G176.70 ppb
2016-06-071606071115G348.00 ppb
2016-06-071606071134G3816.5 ppb
2016-06-071606071144G3912.6 ppb
2016-06-071606071154G408.30 ppb
2016-06-0716060712020G087.50 ppb
2016-06-071606071210G45ND
2016-06-071606071230G5012.9 ppb
2016-06-071606071245G548.00 ppb
2016-09-061609060900G5411.9 ppb
2016-09-061609060910G5014.0 ppb
2016-09-061609061034G12ND
2016-09-061609061048G03ND
2016-09-061609061102G01ND
2016-09-061609061114G08ND
2016-09-061609061122G17ND
2016-09-061609061200G34ND
2016-09-061609061215G398.30 ppb
2016-09-061609061224G38ND
2016-09-061609061232G4012.4 ppb
2016-09-061609061252G458.50 ppb
2016-12-061612061020G1212.6 ppb
2016-12-061612061108G039.80 ppb
2016-12-061612061120G0110.6 ppb
2016-12-061612061135G0812.5 ppb
2016-12-061612061145G1712.9 ppb
2016-12-061612061202G3415.2 ppb
2016-12-061612061218G3914.2 ppb
2016-12-061612061248G3816.0 ppb
2016-12-061612061258G4015.9 ppb
2016-12-061612061310G457.00 ppb
2016-12-061612061325G5016.4 ppb
2016-12-061612061334G543.60 ppb
2017-03-071703071031G1218.2 ppb
2017-03-071703071052G0313.0 ppb
2017-03-071703071110G0114.7 ppb
2017-03-071703071129G0818.6 ppb
2017-03-071703071144G1720.2 ppb
2017-03-071703071204G3420.0 ppb
2017-03-071703071222G3816.2 ppb
2017-03-071703071238G4016.0 ppb
2017-03-071703071251G3914.5 ppb
2017-03-071703071311G457.40 ppb
2017-03-071703071401G5417.4 ppb
2017-03-071703071413G5015.4 ppb
2017-06-061706060852G5414.3 ppb
2017-06-061706060903G5014.1 ppb
2017-06-061706060921G4510.3 ppb
2017-06-061706060944G4013.0 ppb
2017-06-061706060958G3811.5 ppb
2017-06-061706061010G3915.5 ppb
2017-06-061706061027G348.10 ppb
2017-06-061706061046G178.70 ppb
2017-06-061706061104G089.50 ppb
2017-06-061706061117G018.70 ppb
2017-06-061706061131G038.30 ppb
2017-06-061706061147G1210.8 ppb
2017-09-051709050850G5414.1 ppb
2017-09-051709050905G5015.5 ppb
2017-09-051709050919G4516.7 ppb
2017-09-051709050943G4013.7 ppb
2017-09-051709050956G3814.5 ppb
2017-09-051709051010G3914.0 ppb
2017-09-051709051027G34ND
2017-09-051709051050G175.80 ppb
2017-09-051709051103G086.10 ppb
2017-09-051709051116G017.40 ppb
2017-09-051709051133G038.00 ppb
2017-09-051709051150G127.30 ppb
2017-12-051712050955G1210.6 ppb
2017-12-051712051013G038.60 ppb
2017-12-051712051029G018.50 ppb
2017-12-051712051042G087.30 ppb
2017-12-051712051055G176.40 ppb
2017-12-051712051111G3412.4 ppb
2017-12-051712051157G3913.9 ppb
2017-12-051712051210G3813.2 ppb
2017-12-051712051221G4012.4 ppb
2017-12-051712051237G4513.4 ppb
2017-12-051712051253G5012.1 ppb
2017-12-051712051302G5412.1 ppb
2018-03-061803060938G1213.2 ppb
2018-03-061803060956G0312.6 ppb
2018-03-061803061009G0112.0 ppb
2018-03-061803061023G0815.8 ppb
2018-03-061803061033G1714.1 ppb
2018-03-061803061048G3413.0 ppb
2018-03-061803061100G4513.5 ppb
2018-03-061803061104G3813.5 ppb
2018-03-061803061104G4013.0 ppb
2018-03-061803061128G3913.7 ppb
2018-03-061803061224G5018.7 ppb
2018-03-061803061236G5413.4 ppb
2018-06-051806050923G1216.8 ppb
2018-06-051806050942G0310.8 ppb
2018-06-051806051003G019.80 ppb
2018-06-051806051018G0811.1 ppb
2018-06-051806051034G1710.2 ppb
2018-06-051806051108G3416.2 ppb
2018-06-051806051129G388.20 ppb
2018-06-051806051139G3913.2 ppb
2018-06-051806051154G409.50 ppb
2018-06-051806051213G458.20 ppb
2018-06-051806051241G5016.0 ppb
2018-06-051806060824G5413.3 ppb
2018-09-041809040825G5413.9 ppb
2018-09-041809040838G5014.9 ppb
2018-09-041809040857G456.70 ppb
2018-09-041809040916G407.40 ppb
2018-09-041809040930G38ND
2018-09-041809040943G3911.8 ppb
2018-09-041809041001G34ND
2018-09-041809041023G17ND
2018-09-041809041033G08ND
2018-09-041809041046G015.60 ppb
2018-09-041809041104G035.60 ppb
2018-09-041809041150G126.80 ppb
2018-12-041812040837G5410.7 ppb
2018-12-041812041011G126.70 ppb
2018-12-041812041030G03ND
2018-12-041812041058G01ND
2018-12-041812041117G085.60 ppb
2018-12-041812041128G175.80 ppb
2018-12-041812041152G3411.2 ppb
2018-12-041812041210G3810.9 ppb
2018-12-041812041224G4011.1 ppb
2018-12-041812041238G3911.0 ppb
2018-12-041812041342G4511.0 ppb
2018-12-041812041400G5010.9 ppb
2019-03-052019030502338.60 ppb
2019-03-052019030502348.80 ppb
2019-03-052019030502358.90 ppb
2019-03-0520190305023611.0 ppb
2019-03-052019030502378.60 ppb
2019-03-0520190305023813.0 ppb
2019-03-0520190305023914.0 ppb
2019-03-0520190305024013.0 ppb
2019-03-0520190305024114.0 ppb
2019-03-0520190305024214.0 ppb
2019-03-0520190305024311.0 ppb
2019-03-0520190305024412.0 ppb
2019-06-0420190604034112.0 ppb
2019-06-0420190604034210.00 ppb
2019-06-042019060403439.80 ppb
2019-06-042019060403446.30 ppb
2019-06-042019060403459.20 ppb
2019-06-042019060403469.60 ppb
2019-06-0420190604034714.0 ppb
2019-06-0420190604034816.0 ppb
2019-06-0420190604034917.0 ppb
2019-06-0420190604035015.0 ppb
2019-06-0420190604035118.0 ppb
2019-06-0420190604035217.0 ppb
2019-09-0320190900401295.20 ppb
2019-09-0320190904012612.0 ppb
2019-09-0320190904012711.0 ppb
2019-09-0320190904012811.0 ppb
2019-09-0320190904013012.0 ppb
2019-09-032019090401319.50 ppb
2019-09-0320190904013214.0 ppb
2019-09-0320190904013314.0 ppb
2019-09-0320190904013415.0 ppb
2019-09-0320190904013515.0 ppb
2019-09-0320190904013614.0 ppb
2019-09-0320190904013714.0 ppb
2019-12-032019120402568.00 ppb
2019-12-032019120402579.60 ppb
2019-12-032019120402589.00 ppb
2019-12-032019120402597.00 ppb
2019-12-032019120402609.00 ppb
2019-12-0320191204026113.0 ppb
2019-12-032019120402629.90 ppb
2019-12-0320191204026312.0 ppb
2019-12-0320191204026411.0 ppb
2019-12-0320191204026511.0 ppb
2019-12-0320191204026610.00 ppb
2019-12-0320191204026711.0 ppb