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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

Emmaus Borough Public Water

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.50 ppb41ND - 6.00 ppb
20131.000 ppb81ND - 8.00 ppb
20140.938 ppb164ND - 8.00 ppb
20155.50 ppb21ND - 11.0 ppb
20164.00 ppb21ND - 8.00 ppb
20173.73 ppb21ND - 7.45 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2012-08-061200323806.00 ppb
2012-08-06120032376ND
2012-08-06120032382ND
2012-08-06120032378ND
2013-08-221300374448.00 ppb
2013-08-22130037440ND
2013-08-22130037442ND
2013-08-22130037446ND
2013-11-26130052983ND
2013-11-26130052987ND
2013-11-26130052981ND
2013-11-26130052985ND
2014-02-26140008235ND
2014-02-26140008233ND
2014-02-26140008233ND
2014-02-26140008229ND
2014-02-26140008229ND
2014-02-26140008235ND
2014-02-26140008231ND
2014-02-26140008231ND
2014-05-27140021789ND
2014-05-271400217875.00 ppb
2014-05-27140021783ND
2014-05-27140021785ND
2014-08-28140038939ND
2014-08-281400389451.000 ppb
2014-08-281400389438.00 ppb
2014-08-281400389411.000 ppb
2015-08-2613301566ND
2015-08-261330156511.0 ppb
2016-08-30149580568.00 ppb
2016-08-3014958057ND
2017-08-31167716237.45 ppb
2017-08-3116771622ND