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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Pennsville Twsp. Water Depart.

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

 

139

Samples

0

Samples exceeding legal limit (MCL)

124

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.14 ppb2921ND - 7.05 ppb
20151.50 ppb28280.470 ppb - 4.38 ppb
20161.88 ppb16160.600 ppb - 10.00 ppb
20172.79 ppb1611ND - 8.90 ppb
20183.56 ppb2423ND - 8.60 ppb
20194.40 ppb2625ND - 11.9 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
2014-01-02L4861424-150.890 ppb
2014-01-15L4868420-4ND
2014-01-15L4868420-3ND
2014-01-15L4868420-2ND
2014-01-15L4868420-1ND
2014-02-05L4900147-10.490 ppb
2014-02-05L4900147-30.820 ppb
2014-02-05L4900147-21.44 ppb
2014-04-01L4974775-123.10 ppb
2014-04-01L4974775-111.58 ppb
2014-04-01L4974775-134.39 ppb
2014-04-16L4982669-47.05 ppb
2014-04-16L4982669-35.62 ppb
2014-04-16L4982669-23.30 ppb
2014-04-16L4982669-16.10 ppb
2014-07-15L3628988-3ND
2014-07-15L3628988-2ND
2014-07-15L3628988-14.31 ppb
2014-07-16L5111184-42.77 ppb
2014-07-16L5111184-33.75 ppb
2014-07-16L5111184-2ND
2014-07-16L5111184-1ND
2014-10-08L4900148-10.760 ppb
2014-10-08L4900148-21.49 ppb
2014-10-08L4900148-35.90 ppb
2014-10-15L5246673-43.23 ppb
2014-10-15L5246673-34.01 ppb
2014-10-15L5246673-20.590 ppb
2014-10-15L5246673-10.510 ppb
2015-01-14L5363569-41.31 ppb
2015-01-14L5363569-32.36 ppb
2015-01-14L5363569-20.640 ppb
2015-01-14L5363569-10.470 ppb
2015-01-28L5364497-50.550 ppb
2015-01-28L5364497-40.480 ppb
2015-01-28L5364497-33.05 ppb
2015-04-01L5101676-12.17 ppb
2015-04-01L5101676-32.00 ppb
2015-04-01L5101676-21.33 ppb
2015-04-15L5496575-41.14 ppb
2015-04-15L5496575-33.36 ppb
2015-04-15L5496575-20.620 ppb
2015-04-15L5496575-10.600 ppb
2015-07-14L5650860-41.47 ppb
2015-07-14L5650860-32.95 ppb
2015-07-14L5650860-20.650 ppb
2015-07-14L5650860-10.550 ppb
2015-07-22L5706276-50.890 ppb
2015-07-22L5706276-40.830 ppb
2015-07-22L5706276-62.42 ppb
2015-10-13L5816759-41.45 ppb
2015-10-13L5816759-32.94 ppb
2015-10-13L5816759-21.14 ppb
2015-10-13L5816759-11.01 ppb
2015-12-08L5914278-70.660 ppb
2015-12-08L5914278-60.620 ppb
2015-12-08L5914278-84.38 ppb
2016-01-12L5965628-40.720 ppb
2016-01-12L5965628-20.660 ppb
2016-01-12L5965628-10.680 ppb
2016-01-13L5965628-31.91 ppb
2016-04-19L6124454-40.700 ppb
2016-04-19L6124454-31.70 ppb
2016-04-19L6124454-20.600 ppb
2016-04-19L6124454-10.600 ppb
2016-07-20L6311952-42.10 ppb
2016-07-20L6311952-34.60 ppb
2016-07-20L6311952-22.20 ppb
2016-07-20L6311952-11.50 ppb
2016-11-15L6465251-40.700 ppb
2016-11-15L6465251-310.00 ppb
2016-11-15L6465251-20.600 ppb
2016-11-15L6465251-10.800 ppb
2017-01-252204733007ND
2017-01-2522047330051.80 ppb
2017-01-252204733003ND
2017-01-252204733001ND
2017-04-2822267120028.00 ppb
2017-04-2822267120046.00 ppb
2017-04-2822267120011.10 ppb
2017-04-2822267120031.000 ppb
2017-07-1122461370014.70 ppb
2017-07-1122461360015.50 ppb
2017-07-112246135001ND
2017-07-112246133001ND
2017-10-1722707840018.90 ppb
2017-10-1722707850015.20 ppb
2017-10-1722707860011.20 ppb
2017-10-1722707870011.20 ppb
2018-01-2322910790017.00 ppb
2018-01-2322910750014.60 ppb
2018-01-2322910760010.850 ppb
2018-01-2322910770010.800 ppb
2018-04-037048416001-VOC0.820 ppb
2018-04-037048419001-VOC5.40 ppb
2018-04-1023087500014.40 ppb
2018-04-1023087490012.80 ppb
2018-04-1023087480015.70 ppb
2018-04-102308747001ND
2018-07-107058128001-THM4.40 ppb
2018-07-107058127001-THM7.70 ppb
2018-07-107058126001-THM0.870 ppb
2018-07-107058129001-THM0.880 ppb
2018-07-177058948001-VOC0.750 ppb
2018-07-177058949001-VOC4.20 ppb
2018-07-177058947001-VOC4.90 ppb
2018-10-107067726001-THM8.60 ppb
2018-10-107067723001-THM8.50 ppb
2018-10-107067747001-THM2.80 ppb
2018-10-107067750001-THM1.40 ppb
2018-10-107067733001-VOC1.30 ppb
2018-10-107067734001-VOC5.20 ppb
2018-11-277073209001-VOC1.50 ppb
2019-01-287078500001-THM4.10 ppb
2019-01-297078502001-THM5.90 ppb
2019-01-297078505001-THM3.60 ppb
2019-01-297078503001-THM4.00 ppb
2019-02-127079703001-VOCND
2019-02-137079702001-VOC7.50 ppb
2019-04-207087331001-VOC7.30 ppb
2019-04-237087325001-THM8.10 ppb
2019-04-237087326001-THM4.80 ppb
2019-04-237087323001-THM1.40 ppb
2019-04-237087327001-THM1.70 ppb
2019-04-237087332001-VOC1.50 ppb
2019-04-247087330001-VOC11.9 ppb
2019-07-177098173001-THM6.90 ppb
2019-07-177098166001-THM8.00 ppb
2019-07-177098186001-THM2.00 ppb
2019-07-177098175001-THM1.60 ppb
2019-07-247099032001-VOC0.910 ppb
2019-07-247099033001-VOC4.00 ppb
2019-10-2470109731001-THM5.00 ppb
2019-10-2470109732001-THM7.00 ppb
2019-10-2470109729001-HAA2.60 ppb
2019-10-2470109728001-THM2.90 ppb
2019-11-0570111263001-VOC5.80 ppb
2019-11-0670111262001-VOC2.20 ppb
2019-11-0670111268001-VOC3.60 ppb