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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Hammonton 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

 

125

Samples

0

Samples exceeding legal limit (MCL)

37

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.109 ppb247ND - 1.08 ppb
20150.428 ppb2117ND - 1.84 ppb
20160.290 ppb2115ND - 1.000 ppb
20170.279 ppb2415ND - 2.00 ppb
20180.487 ppb1914ND - 2.01 ppb
20190.810 ppb1610ND - 3.27 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
2014-01-08L4869099-2ND
2014-01-08L4869099-1ND
2014-01-08L4869099-4ND
2014-01-08L4869099-3ND
2014-01-13L4869163-2ND
2014-04-09L4983385-2ND
2014-04-09L4983385-1ND
2014-04-09L4983385-4ND
2014-04-09L4983385-31.08 ppb
2014-04-09L4983448-10.110 ppb
2014-07-09L5112176-2ND
2014-07-09L5112176-1ND
2014-07-09L5112176-4ND
2014-07-09L5112176-3ND
2014-07-09L5112279-2ND
2014-09-12L5243061-2ND
2014-09-24L5171509-2ND
2014-09-29L5216814-40.0900 ppb
2014-10-08L5247334-20.400 ppb
2014-10-08L5247334-10.160 ppb
2014-10-08L5247334-40.210 ppb
2014-10-08L5247334-30.570 ppb
2014-10-08L5247417-2ND
2014-10-08L5216822-1ND
2015-01-07L5364265-20.410 ppb
2015-01-07L5364265-10.360 ppb
2015-01-07L5364265-40.190 ppb
2015-01-07L5364265-30.570 ppb
2015-01-07L4983527-2ND
2015-04-01L5497324-10.110 ppb
2015-04-08L5497322-20.550 ppb
2015-04-08L5497322-10.400 ppb
2015-04-08L5497322-40.110 ppb
2015-04-08L5497322-30.720 ppb
2015-07-08L5651858-20.180 ppb
2015-07-08L5651858-10.370 ppb
2015-07-08L5651858-40.220 ppb
2015-07-08L5651858-31.37 ppb
2015-07-08L5651860-1ND
2015-10-07L5817408-20.520 ppb
2015-10-07L5817408-10.800 ppb
2015-10-07L5817408-40.260 ppb
2015-10-07L5817408-31.84 ppb
2015-10-07L5817410-1ND
2015-10-21L5316782-4ND
2016-01-06L5966336-20.250 ppb
2016-01-06L5966336-1ND
2016-01-06L5966336-40.140 ppb
2016-01-06L5966336-30.390 ppb
2016-01-06L5966399-2ND
2016-01-06L5966338-1ND
2016-04-06L6125171-20.1000 ppb
2016-04-06L6125171-10.500 ppb
2016-04-06L6125171-40.1000 ppb
2016-04-06L6125171-30.600 ppb
2016-04-06L6125173-1ND
2016-07-06L6312872-20.300 ppb
2016-07-06L6312872-10.400 ppb
2016-07-06L6312872-40.200 ppb
2016-07-06L6312872-30.900 ppb
2016-07-06L6312874-1ND
2016-10-05L6465857-20.400 ppb
2016-10-05L6465857-10.600 ppb
2016-10-05L6465857-40.200 ppb
2016-10-05L6465857-31.000 ppb
2016-10-05L6465855-1ND
2017-01-04L6596792-1ND
2017-01-11L6596790-20.200 ppb
2017-01-11L6596790-10.300 ppb
2017-01-11L6596790-40.200 ppb
2017-01-11L6596790-30.600 ppb
2017-04-05L6718326-10.400 ppb
2017-04-05L6718326-40.200 ppb
2017-04-05L6718326-30.400 ppb
2017-04-07L6756587-10.400 ppb
2017-04-12L6718328-1ND
2017-04-12L6718444-1ND
2017-06-14L6855058-1ND
2017-07-05L6853144-20.200 ppb
2017-07-05L6853144-10.200 ppb
2017-07-05L6853144-40.1000 ppb
2017-07-05L6853144-30.600 ppb
2017-07-05L6853247-2ND
2017-07-19L6853142-1ND
2017-10-04L6948954-2ND
2017-10-04L6948878-1ND
2017-10-11L6948876-20.800 ppb
2017-10-11L6948876-1ND
2017-10-11L6948876-40.1000 ppb
2017-10-11L6948876-32.00 ppb
2018-01-03L6980838-1ND
2018-01-10L6980840-20.400 ppb
2018-01-10L6980840-10.400 ppb
2018-01-10L6980840-40.1000 ppb
2018-01-10L6980840-30.600 ppb
2018-04-12L7006965-20.200 ppb
2018-04-12L7006965-40.1000 ppb
2018-04-12L7006968-1ND
2018-05-22L7019693-10.800 ppb
2018-05-22L7019693-21.000 ppb
2018-07-09L7038119-20.900 ppb
2018-07-09L7038119-10.500 ppb
2018-07-09L7038119-40.1000 ppb
2018-07-09L7038119-31.30 ppb
2018-07-09L7038121-1ND
2018-10-10A273870.850 ppb
2018-10-10A37386ND
2018-10-10A27385ND
2018-10-10A273842.01 ppb
2019-01-09A278770.880 ppb
2019-01-09A278760.940 ppb
2019-01-09A278781.05 ppb
2019-01-09A278791.63 ppb
2019-04-10A28437ND
2019-04-10A28436ND
2019-04-10A28435ND
2019-04-10A284341.33 ppb
2019-07-25A291041.17 ppb
2019-07-25A291030.660 ppb
2019-07-25A29102ND
2019-07-25A291013.27 ppb
2019-10-09A297191.000 ppb
2019-10-09A29717ND
2019-10-09A29718ND
2019-10-09A297161.03 ppb