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EWG's Tap Water Database — 2019 UPDATE

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Chloroform

Hunters Creek Mobile Home Park

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.693 ppb32ND - 1.20 ppb
20150.587 ppb330.380 ppb - 0.790 ppb
20160.482 ppb63ND - 2.40 ppb
20170.0414 ppb71ND - 0.290 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
2014-08-11480-65312-11.20 ppb
2014-09-16480-67414-40.880 ppb
2014-09-16480-67414-5ND
2015-08-15480-85785-10.380 ppb
2015-08-15480-85785-30.590 ppb
2015-08-15480-85785-20.790 ppb
2016-08-30480-105292-12.40 ppb
2016-08-30480-105292-20.210 ppb
2016-08-30408-105292-3ND
2016-12-05480-110556-20.280 ppb
2016-12-05480-110556-3ND
2016-12-05480-11-556-1LOT6ND
2017-03-14480-114642-1ND
2017-05-09480-117785-3ND
2017-05-09480-117785-10.290 ppb
2017-08-11480-122658-1ND
2017-08-11480-122658-2ND
2017-08-11480-122658-3ND
2017-11-14480-127606-4ND