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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Moro Waterworks

NOTE: Moro Waterworks purchases water from Lee County Water which is required to test for chloroform. Sample information shown below was taken by Lee County 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.

MORE ABOUT THIS CONTAMINANT

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND60ND
2016ND80ND
2017ND80ND
2018ND80ND
2019ND70ND

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

NOTE: Moro Waterworks purchases water from Lee County Water which is required to test for chloroform. Sample information shown below was taken by Lee County Water.

Date Lab ID Result
2014-08-2614240001602ND
2014-08-2614240001302ND
2014-11-1914324001402ND
2014-11-1914324001302ND
2015-03-0315063007802ND
2015-06-0815161001202ND
2015-06-0815161001302ND
2015-08-0615219000802ND
2015-08-0615219000902ND
2015-11-2315328001102ND
2015-11-2315328001202ND
2016-03-0716070003002ND
2016-03-0716070002702ND
2016-05-0316126005302ND
2016-05-0316126005402ND
2016-08-2916245001202ND
2016-08-2916245001102ND
2016-11-1416321008302ND
2016-11-1416321008202ND
2017-02-1317046006202ND
2017-02-1317046006302ND
2017-05-3017152004202ND
2017-05-3017152004302ND
2017-08-0717222000602ND
2017-08-0717222000102ND
2017-11-1417320011102ND
2017-11-1417320010802ND
2018-02-2018053001102ND
2018-02-2018053001002ND
2018-05-1418137001002ND
2018-05-1418137000902ND
2018-08-2118235002302ND
2018-08-2118235002002ND
2018-11-1318319001802ND
2018-11-1318319001502ND
2019-02-1119045004902ND
2019-02-1119045004702ND
2019-05-1419136002402ND
2019-05-1419136002502ND
2019-08-1319226001302ND
2019-08-1319226001402ND
2019-11-1319318003902ND
2019-11-1319318004002ND