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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Southgate Mobile Home Park 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

 

92

Samples

0

Samples exceeding legal limit (MCL)

48

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND160ND
20169.00 ppb168ND - 20.0 ppb
20172.05 ppb168ND - 4.70 ppb
20188.43 ppb16160.600 ppb - 21.5 ppb
20198.77 ppb16161.77 ppb - 16.0 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
2014-05-131300769ND
2014-05-131300768ND
2014-05-131300769ND
2014-05-131300768ND
2014-08-111325186ND
2014-08-111325187ND
2014-08-111325187ND
2014-08-111325186ND
2014-11-121349681ND
2014-11-121349682ND
2014-11-121349682ND
2014-11-121349681ND
2015-02-171373161ND
2015-02-171373162ND
2015-02-171373162ND
2015-02-171373161ND
2015-05-181396184ND
2015-05-181396185ND
2015-05-181396185ND
2015-05-181396184ND
2015-08-241421813ND
2015-08-241421814ND
2015-08-241421814ND
2015-08-241421813ND
2015-11-181445140ND
2015-11-181445140ND
2015-11-181445139ND
2015-11-181445139ND
2016-02-221469938ND
2016-02-221469939ND
2016-02-221469938ND
2016-02-221469939ND
2016-05-301495349ND
2016-05-301495350ND
2016-05-301495349ND
2016-05-301495350ND
2016-08-22151885420.0 ppb
2016-08-22151885420.0 ppb
2016-08-22151885318.7 ppb
2016-08-22151885318.7 ppb
2016-11-28154401317.5 ppb
2016-11-28154401317.5 ppb
2016-11-28154401215.8 ppb
2016-11-28154401215.8 ppb
2017-02-09352945810084.70 ppb
2017-02-09352945810074.60 ppb
2017-02-09352945810084.70 ppb
2017-02-09352945810074.60 ppb
2017-05-1135312027013ND
2017-05-1135312027014ND
2017-05-1135312027014ND
2017-05-1135312027013ND
2017-08-0935329950034ND
2017-08-0935329950035ND
2017-08-0935329950035ND
2017-08-0935329950034ND
2017-11-29353600450023.50 ppb
2017-11-29353600450013.60 ppb
2017-11-29353600450013.60 ppb
2017-11-29353600450023.50 ppb
2018-02-15353751030014.20 ppb
2018-02-15353751030026.00 ppb
2018-02-15353751030014.20 ppb
2018-02-15353751030026.00 ppb
2018-05-243539460500121.3 ppb
2018-05-243539460500221.5 ppb
2018-05-243539460500121.3 ppb
2018-05-243539460500221.5 ppb
2018-08-20354133460025.80 ppb
2018-08-20354133460016.80 ppb
2018-08-20354133460016.80 ppb
2018-08-20354133460025.80 ppb
2018-11-16354321960011.20 ppb
2018-11-16354321960020.600 ppb
2018-11-16354321960011.20 ppb
2018-11-16354321960020.600 ppb
2019-02-14354490820021.77 ppb
2019-02-143544908200113.4 ppb
2019-02-143544908200113.4 ppb
2019-02-14354490820021.77 ppb
2019-05-013546576800213.3 ppb
2019-05-013546576800213.3 ppb
2019-05-013546576800116.0 ppb
2019-05-013546576800116.0 ppb
2019-08-01354872070025.50 ppb
2019-08-01354872070016.00 ppb
2019-08-01354872070016.00 ppb
2019-08-01354872070025.50 ppb
2019-11-05355105250016.40 ppb
2019-11-05355105250027.80 ppb
2019-11-05355105250016.40 ppb
2019-11-05355105250027.80 ppb