Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chloroform

Emmaus Borough Public Water

Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.

In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.

Click here to read more about disinfection byproducts.

 

46

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.60 ppb42ND - 5.60 ppb
20131.14 ppb105ND - 8.80 ppb
20140.479 ppb198ND - 4.00 ppb
20152.77 ppb660.600 ppb - 13.1 ppb
20162.20 ppb550.500 ppb - 8.10 ppb
20179.05 ppb221.000 ppb - 17.1 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.4 ppb

The EWG Health Guideline of 0.4 ppb for chloroform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2012-08-06120032377ND
2012-08-061200323810.800 ppb
2012-08-06120032375ND
2012-08-061200323795.60 ppb
2013-08-221300374450.700 ppb
2013-08-221300374390.700 ppb
2013-08-221300374360.600 ppb
2013-08-221300374360.600 ppb
2013-08-221300374438.80 ppb
2013-08-22130037441ND
2013-11-26130052984ND
2013-11-26130052980ND
2013-11-26130052982ND
2013-11-26130052986ND
2014-02-26140008232ND
2014-02-26140008234ND
2014-02-26140008232ND
2014-02-261400082230.500 ppb
2014-02-261400082230.500 ppb
2014-02-26140008234ND
2014-02-26140008228ND
2014-02-26140008228ND
2014-02-26140008230ND
2014-02-26140008230ND
2014-02-261400082230.500 ppb
2014-05-27140021788ND
2014-05-27140021784ND
2014-05-271400217820.500 ppb
2014-05-271400217861.70 ppb
2014-08-28140038938ND
2014-08-281400389440.700 ppb
2014-08-281400389424.00 ppb
2014-08-281400389400.700 ppb
2015-02-24124349790.600 ppb
2015-02-24124350430.700 ppb
2015-02-24124349560.700 ppb
2015-05-27127886980.600 ppb
2015-08-26133015700.900 ppb
2015-08-261330156913.1 ppb
2016-03-07140204890.600 ppb
2016-03-07140205530.500 ppb
2016-03-07140204660.700 ppb
2016-08-30149580628.10 ppb
2016-08-30149580631.10 ppb
2017-08-311677162517.1 ppb
2017-08-31167716241.000 ppb