Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chloroform

Southington 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

 

152

Samples

0

Samples exceeding legal limit (MCL)

95

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20149.51 ppb2717ND - 82.0 ppb
20156.95 ppb2616ND - 84.0 ppb
20165.57 ppb2615ND - 55.0 ppb
20174.66 ppb2315ND - 46.1 ppb
20185.24 ppb2619ND - 69.3 ppb
201910.6 ppb2413ND - 79.5 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
2014-02-11E402713-1VOCND
2014-02-11E402719-1TTHMND
2014-02-11E402719-2TTHM1.20 ppb
2014-02-11E402719-3TTHM0.940 ppb
2014-02-11E402719-4TTHM1.20 ppb
2014-05-21E405J92-1TTHM2.20 ppb
2014-05-21E405J92-2TTHM0.610 ppb
2014-05-21E405J92-3TTHM1.80 ppb
2014-05-21E405J92-4TTHM0.760 ppb
2014-06-25E406O79-1VOC0.510 ppb
2014-06-25E406O82-1VOCND
2014-06-25E406O83-1VOCND
2014-06-25E406O85-1VOCND
2014-06-25E406O86-1VOCND
2014-06-25E406O87-1VOCND
2014-06-25E406O88-1VOC17.0 ppb
2014-06-25E406P04-1VOCND
2014-08-06E408629-1TTHM63.0 ppb
2014-08-06E408629-2TTHM78.0 ppb
2014-08-06E408629-3TTHM82.0 ppb
2014-08-06E408629-4TTHM1.000 ppb
2014-08-06E408748-1VOCND
2014-11-19E411H79-1VOCND
2014-11-19E411H83-1TTHM2.80 ppb
2014-11-19E411H83-2TTHM0.750 ppb
2014-11-19E411H83-3TTHM1.80 ppb
2014-11-19E411H83-4TTHM1.30 ppb
2015-02-11E502752-3TTHM1.000 ppb
2015-02-11E502752-4TTHM1.10 ppb
2015-02-11E502752-2TTHM0.580 ppb
2015-02-11E502752-1TTHM1.40 ppb
2015-02-11E502751-1VOCND
2015-05-22E505M55-3TTHM1.70 ppb
2015-05-22E505M55-4TTHM0.780 ppb
2015-05-22E505M55-2TTHMND
2015-05-22E505M55-1TTHM2.70 ppb
2015-06-24E506T36-1VOCND
2015-06-24E506T38-1VOCND
2015-06-24E506T39-1VOCND
2015-06-24E506T34-1VOCND
2015-06-24E506T37-1VOCND
2015-06-24E506T35-1VOCND
2015-06-25E506T46-1VOC18.0 ppb
2015-08-12E508F03-4TTHM1.30 ppb
2015-08-12E508F03-2TTHM84.0 ppb
2015-08-12E508F03-1TTHM62.0 ppb
2015-08-12E508F00-1VOCND
2015-08-13E508F03-3TTHM0.830 ppb
2015-11-18E511J87-4TTHM0.830 ppb
2015-11-18E511J87-2TTHM0.820 ppb
2015-11-18E511J87-3TTHM1.70 ppb
2015-11-18E511J87-1TTHM1.90 ppb
2015-11-18E511J94-1VOCND
2016-02-17E602H32-1TTHM1.40 ppb
2016-02-17E602H32-2TTHM1.10 ppb
2016-02-17E602H32-3TTHMND
2016-02-17E602H32-4TTHMND
2016-02-17E602H33-1VOCND
2016-02-17E602H34-1VOCND
2016-02-17E602H38-1VOCND
2016-02-17E602H37-1VOCND
2016-02-17E602H36-1VOCND
2016-02-17E602H39-1VOCND
2016-06-16E606J93-1TTHM3.30 ppb
2016-06-16E606J93-2TTHM3.00 ppb
2016-06-16E606J93-3TTHM1.20 ppb
2016-06-16E606J93-4TTHM3.30 ppb
2016-06-16E606K01-1VOCND
2016-06-27E606U31-1VOC13.0 ppb
2016-08-10E608F97-1TTHM53.0 ppb
2016-08-10E608F97-2TTHM55.0 ppb
2016-08-10E608F97-3TTHM0.820 ppb
2016-08-10E608F97-4TTHM1.30 ppb
2016-08-10E608F98-1VOCND
2016-11-16E611K73-1TTHM0.680 ppb
2016-11-16E611K73-2TTHM3.70 ppb
2016-11-16E611K73-3TTHM2.90 ppb
2016-11-16E611K73-4TTHM1.20 ppb
2016-11-16E611K77-1VOCND
2017-02-15E702E82-1TTHM1.70 ppb
2017-02-15E702E82-2TTHM1.000 ppb
2017-02-15E702E82-3TTHMND
2017-02-15E702E82-4TTHM0.790 ppb
2017-02-15E702E70-1VOCND
2017-02-15E702E68-1VOCND
2017-02-15E702E69-1VOCND
2017-02-15E702E71-1VOCND
2017-02-15E702E72-1VOCND
2017-02-15E702E73-1VOCND
2017-05-17D7E1784-02VOC1.30 ppb
2017-05-17D7E1784-03VOCND
2017-05-17D7E1784-04VOC0.600 ppb
2017-05-23D7E2298-01VOC4.60 ppb
2017-08-09D7H1248-01VOC30.1 ppb
2017-08-09D7H1248-02VOC46.1 ppb
2017-08-09D7H1248-03VOC0.700 ppb
2017-08-09D7H1248-04VOC0.800 ppb
2017-08-09D7H1382-01VOC10.9 ppb
2017-11-15D7K1449-01VOC4.00 ppb
2017-11-15D7K1449-02VOC2.10 ppb
2017-11-15D7K1449-03VOC0.600 ppb
2017-11-15D7K1449-04VOC1.90 ppb
2018-02-14D8B1083-01VOC1.70 ppb
2018-02-14D8B1083-02VOC1.80 ppb
2018-02-14D8B1083-03VOC0.500 ppb
2018-02-14D8B1083-04VOC1.10 ppb
2018-02-14D8B1078-01VOCND
2018-02-14D8B1079-01VOCND
2018-02-14D8B1074-01VOCND
2018-02-14D8B1077-01VOC0.500 ppb
2018-02-14D8B1071-01VOCND
2018-02-14D8B1075-01VOCND
2018-05-17D8E1923-01VOC3.20 ppb
2018-05-17D8E1923-02VOC2.60 ppb
2018-05-17D8E1923-03VOC0.600 ppb
2018-05-17D8E1923-04VOC0.900 ppb
2018-05-17D8E1913-01VOCND
2018-08-16D8H1999-01VOC16.0 ppb
2018-08-16D8H1999-02VOC69.3 ppb
2018-08-16D8H1999-03VOC1.10 ppb
2018-08-16D8H1999-04VOC1.60 ppb
2018-08-16D8H2156-01VOC25.2 ppb
2018-08-16D8H2015-01VOC0.900 ppb
2018-11-14D8K1692-01VOC4.30 ppb
2018-11-14D8K1692-02VOC3.40 ppb
2018-11-14D8K1692-03VOC0.700 ppb
2018-11-14D8K1692-04VOC0.900 ppb
2018-11-14D8K1690-01VOCND
2019-01-03D9A0362-01VOCND
2019-01-30D9A2484-01VOCRND
2019-02-13D9B1230-01VOC3.55 ppb
2019-02-13D9B1230-02VOCND
2019-02-13D9B1230-03VOCND
2019-02-13D9B1230-04VOCND
2019-02-13D9B1239-01VOCND
2019-02-13D9B1240-01VOCND
2019-02-13D9B1241-01VOCND
2019-02-13D9B1242-01VOCND
2019-02-13D9B1243-01VOCND
2019-05-15D9E1867-01VOC4.52 ppb
2019-05-15D9E1867-02VOC1.27 ppb
2019-05-15D9E1867-03VOCND
2019-05-15D9E1867-04VOC0.540 ppb
2019-08-14D9H1826-01VOC79.5 ppb
2019-08-14D9H1826-02VOC64.3 ppb
2019-08-14D9H1826-03VOC61.8 ppb
2019-08-14D9H1826-04VOC2.25 ppb
2019-08-14D9H1824-01VOC21.2 ppb
2019-11-13D9K1352-01VOC4.64 ppb
2019-11-13D9K1352-02VOC4.42 ppb
2019-11-13D9K1352-03VOC1.000 ppb
2019-11-13D9K1352-04VOC6.24 ppb