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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Flemington Water Department

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

 

112

Samples

0

Samples exceeding legal limit (MCL)

32

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.312 ppb219ND - 1.79 ppb
20150.389 ppb2114ND - 2.35 ppb
20160.822 ppb1811ND - 3.50 ppb
20170.529 ppb179ND - 2.50 ppb
20180.511 ppb1811ND - 2.10 ppb
20190.571 ppb1712ND - 2.70 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
2014-01-23L4860593-40.0600 ppb
2014-02-19L4899197-2ND
2014-02-19L4899197-1ND
2014-03-20L4860592-10.180 ppb
2014-03-20L4952571-10.0900 ppb
2014-03-20L4985003-2ND
2014-04-01L4973769-40.520 ppb
2014-05-15L5017978-2ND
2014-05-15L5017978-11.69 ppb
2014-06-04L4973768-1ND
2014-06-04L5096201-2ND
2014-07-10L5104459-2ND
2014-08-20L5162101-2ND
2014-08-20L5162101-11.79 ppb
2014-09-03L5235167-1ND
2014-09-03L5104460-2ND
2014-10-01L5241116-2ND
2014-11-19L5286814-21.72 ppb
2014-11-19L5286814-10.280 ppb
2014-12-09L5356526-10.220 ppb
2014-12-09L5241117-2ND
2015-01-07L5367823-2ND
2015-02-17L5408434-20.0800 ppb
2015-02-17L5408434-10.550 ppb
2015-02-25L5467007-10.180 ppb
2015-02-25L5367824-2ND
2015-04-01L5490176-10.230 ppb
2015-04-01L5490176-2ND
2015-04-01L5490180-2ND
2015-05-15L5540330-20.190 ppb
2015-05-15L5540330-11.44 ppb
2015-07-08L5640077-10.130 ppb
2015-07-08L5639802-10.150 ppb
2015-07-08L5639802-20.110 ppb
2015-07-08L5639803-2ND
2015-08-18L5711719-20.620 ppb
2015-08-18L5711719-12.35 ppb
2015-10-13L5820753-2ND
2015-10-30L5884149-10.150 ppb
2015-10-30L5820754-2ND
2015-11-16L5863759-20.190 ppb
2015-11-16L5863759-11.79 ppb
2016-01-22L5969093-10.200 ppb
2016-01-22L5969093-2ND
2016-01-22L5969094-2ND
2016-02-16L6016823-20.500 ppb
2016-02-16L6016823-11.20 ppb
2016-04-13L6131101-3ND
2016-05-16L6178861-20.500 ppb
2016-05-16L6178861-13.00 ppb
2016-07-06L6317313-10.200 ppb
2016-07-06L6317313-2ND
2016-07-06L6317314-2ND
2016-08-15L6372015-23.50 ppb
2016-08-15L6372015-12.90 ppb
2016-10-03L6468752-2ND
2016-10-03L6468753-2ND
2016-10-03L6468752-10.200 ppb
2016-11-15L6509536-20.500 ppb
2016-11-15L6509536-12.10 ppb
2017-01-04L6599687-2ND
2017-01-06L6599688-2ND
2017-02-16L6634926-20.300 ppb
2017-02-16L6634926-11.70 ppb
2017-04-03L6722639-1ND
2017-05-15L6762089-20.400 ppb
2017-05-15L6762089-12.50 ppb
2017-06-19L6722640-2ND
2017-07-10L6857539-1ND
2017-08-21L6903102-20.500 ppb
2017-08-21L6903102-11.90 ppb
2017-10-05L6951514-1ND
2017-10-17L6951663-10.1000 ppb
2017-10-17L6857540-2ND
2017-11-15L6960727-20.300 ppb
2017-11-15L6960727-11.30 ppb
2017-12-21L6951515-2ND
2018-01-303863798ND
2018-02-16L6994197-20.200 ppb
2018-02-16L6994197-11.30 ppb
2018-02-238024362-02ND
2018-04-06L7009448-1ND
2018-05-16L7016291-20.400 ppb
2018-05-16L7016291-12.10 ppb
2018-05-22L7009449-20.1000 ppb
2018-07-12L7041024-1ND
2018-08-16L7050229-20.400 ppb
2018-08-16L7050229-11.60 ppb
2018-09-18L7041025-2ND
2018-09-25L7041197-10.1000 ppb
2018-10-02L7071673-1ND
2018-11-14L7079983-20.500 ppb
2018-11-14L7079983-12.10 ppb
2018-12-18L7071823-10.400 ppb
2018-12-18L7071674-2ND
2019-01-08L7090473-1ND
2019-02-07L7090474-2ND
2019-02-22L7099711-20.200 ppb
2019-02-22L7099711-11.30 ppb
2019-04-04L7111364-1ND
2019-05-15L7116356-20.400 ppb
2019-05-15L7116356-12.70 ppb
2019-06-19L7111365-20.200 ppb
2019-07-03L7134238-1ND
2019-08-15L7146391-20.300 ppb
2019-08-15L7146391-11.30 ppb
2019-08-23L7134239-20.200 ppb
2019-10-02L7160613-1ND
2019-11-15L7172742-20.200 ppb
2019-11-15L7172742-12.20 ppb
2019-11-20L7160780-10.200 ppb
2019-11-20L7160614-20.500 ppb