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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

City of Pearland

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

112

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201412.3 ppb3218ND - 42.3 ppb
201517.1 ppb3218ND - 51.7 ppb
201612.1 ppb3221ND - 42.4 ppb
201710.3 ppb3216ND - 36.2 ppb
201810.9 ppb3215ND - 53.9 ppb
201919.6 ppb3224ND - 57.3 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
2014-02-21AC44260ND
2014-02-21AC4425628.5 ppb
2014-02-21AC44261ND
2014-02-21AC4426219.4 ppb
2014-02-21AC4425725.1 ppb
2014-02-21AC44229ND
2014-02-21AC4425926.8 ppb
2014-02-21AC4425831.1 ppb
2014-04-02AC49099ND
2014-04-02AC4911827.0 ppb
2014-04-02AC4910217.5 ppb
2014-04-02AC491209.60 ppb
2014-04-02AC4909820.3 ppb
2014-04-02AC49100ND
2014-04-02AC4910123.8 ppb
2014-04-02AC4909725.9 ppb
2014-07-01AC58602ND
2014-07-01AC5860642.3 ppb
2014-07-01AC58618ND
2014-07-01AC58597ND
2014-07-01AC58598ND
2014-07-01AC58605ND
2014-07-01AC5863021.7 ppb
2014-07-01AC58603ND
2014-11-19AC724508.70 ppb
2014-11-19AC7247518.1 ppb
2014-11-19AC72448ND
2014-11-19AC724747.00 ppb
2014-11-19AC72473ND
2014-11-19AC72449ND
2014-11-19AC7245120.8 ppb
2014-11-19AC7244719.3 ppb
2015-02-25AC82068ND
2015-02-25AC8208724.6 ppb
2015-02-25AC82066ND
2015-02-25AC8207624.2 ppb
2015-02-25AC8207124.4 ppb
2015-02-25AC82070ND
2015-02-25AC8206925.1 ppb
2015-02-25AC8206724.6 ppb
2015-04-14AC88088ND
2015-04-14AC8809250.1 ppb
2015-04-14AC88094ND
2015-04-14AC8809538.6 ppb
2015-04-14AC8808948.6 ppb
2015-04-14AC88091ND
2015-04-14AC8808447.6 ppb
2015-04-14AC8809051.7 ppb
2015-07-13AC99064ND
2015-07-13AC9910149.5 ppb
2015-07-13AC99065ND
2015-07-13AC99062ND
2015-07-13AC99061ND
2015-07-13AC99063ND
2015-07-13AC9910250.2 ppb
2015-07-13AC9909410.3 ppb
2015-11-06AD129587.60 ppb
2015-11-06AD1294725.7 ppb
2015-11-06AD12948ND
2015-11-06AD12930ND
2015-11-06AD12949ND
2015-11-06AD129573.20 ppb
2015-11-06AD1295027.9 ppb
2015-11-06AD1295214.6 ppb
2016-03-08AD27528ND
2016-03-08AD2753226.1 ppb
2016-03-08AD275295.50 ppb
2016-03-08AD2753317.3 ppb
2016-03-08AD27530ND
2016-03-08AD2752726.4 ppb
2016-03-08AD2752521.1 ppb
2016-03-16AD29021ND
2016-05-25AD38243ND
2016-05-25AD3823742.4 ppb
2016-05-25AD38221ND
2016-05-25AD3823822.7 ppb
2016-05-25AD3821822.2 ppb
2016-05-25AD38266ND
2016-05-25AD3822235.2 ppb
2016-05-25AD3823913.8 ppb
2016-09-29AD51887ND
2016-09-29AD5189219.8 ppb
2016-09-29AD51891ND
2016-09-29AD518851.80 ppb
2016-09-29AD51884ND
2016-09-29AD5188611.3 ppb
2016-09-29AD5188921.6 ppb
2016-09-29AD5188816.2 ppb
2016-10-21AD54281ND
2016-10-21AD5428217.4 ppb
2016-10-21AD54297ND
2016-10-21AD5428914.7 ppb
2016-10-21AD542909.70 ppb
2016-10-21AD5429610.5 ppb
2016-10-21AD5429817.8 ppb
2016-10-21AD5429514.9 ppb
2017-01-17AD65070ND
2017-01-17AD6507622.0 ppb
2017-01-17AD65077ND
2017-01-17AD6506613.4 ppb
2017-01-17AD6507110.1 ppb
2017-01-17AD65075ND
2017-01-17AD6506919.7 ppb
2017-01-17AD6507216.2 ppb
2017-04-12AD7942131.0 ppb
2017-04-12AD79427ND
2017-04-12AD79422ND
2017-04-12AD79424ND
2017-04-12AD7942627.9 ppb
2017-04-12AD79425ND
2017-04-12AD7942332.7 ppb
2017-04-12AD7942826.9 ppb
2017-07-18AD89677ND
2017-07-18AD896834.90 ppb
2017-07-18AD89681ND
2017-07-18AD89678ND
2017-07-18AD89679ND
2017-07-18AD89684ND
2017-07-18AD89682ND
2017-07-18AD89680ND
2017-10-18AE013184.30 ppb
2017-10-18AE0131935.5 ppb
2017-10-18AE0131516.1 ppb
2017-10-18AE01323ND
2017-10-18AE01322ND
2017-10-18AE013201.000 ppb
2017-10-18AE0131736.2 ppb
2017-10-18AE0131433.0 ppb
2018-03-07AE17247ND
2018-03-07AE1725753.9 ppb
2018-03-07AE17255ND
2018-03-07AE17246ND
2018-03-07AE17245ND
2018-03-07AE17256ND
2018-03-07AE17239ND
2018-03-07AE172441.000 ppb
2018-04-03AE20985ND
2018-04-03AE2098223.4 ppb
2018-04-03AE20980ND
2018-04-03AE20984ND
2018-04-03AE20986ND
2018-04-03AE20981ND
2018-04-03AE2098326.6 ppb
2018-04-03AE2097931.0 ppb
2018-08-13AE366182.30 ppb
2018-08-13AE3660029.8 ppb
2018-08-13AE366023.40 ppb
2018-08-13AE36612ND
2018-08-13AE36608ND
2018-08-13AE36601ND
2018-08-13AE3660928.1 ppb
2018-08-13AE3661024.4 ppb
2018-10-18AE43902ND
2018-10-18AE4390834.0 ppb
2018-10-18AE43909ND
2018-10-18AE4390715.1 ppb
2018-10-18AE4390627.5 ppb
2018-10-18AE43903ND
2018-10-18AE4390423.0 ppb
2018-10-18AE4390523.8 ppb
2019-01-29AE51881ND
2019-01-29AE5188334.5 ppb
2019-01-29AE51892ND
2019-01-29AE5187631.5 ppb
2019-01-29AE5188028.1 ppb
2019-01-29AE51889ND
2019-01-29AE5189033.5 ppb
2019-01-29AE5188231.1 ppb
2019-04-23AE633413.10 ppb
2019-04-23AE6336928.8 ppb
2019-04-23AE63366ND
2019-04-23AE6334814.0 ppb
2019-04-23AE6334318.8 ppb
2019-04-23AE633441.30 ppb
2019-04-23AE6334237.1 ppb
2019-04-23AE6337029.2 ppb
2019-07-02AE7307757.3 ppb
2019-07-02AE7306741.9 ppb
2019-07-02AE730683.00 ppb
2019-07-02AE7310234.0 ppb
2019-07-02AE7307319.0 ppb
2019-07-02AE7307534.5 ppb
2019-07-02AE7307651.2 ppb
2019-07-10AE73891ND
2019-10-14AE864581.000 ppb
2019-10-14AE8646030.5 ppb
2019-10-14AE864591.60 ppb
2019-10-14AE86461ND
2019-10-14AE86462ND
2019-10-14AE86468ND
2019-10-14AE8646536.9 ppb
2019-10-14AE8644224.7 ppb