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EWG's Tap Water Database — 2019 UPDATE

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Chloroform

Bodcaw Rural Water System

NOTE: Bodcaw Rural Water System purchases water from Hope Water Light Comm. which is required to test for chloroform. Sample information shown below was taken by Hope Water Light Comm..

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.

 

171

Samples

0

Samples exceeding legal limit (MCL)

95

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201219.6 ppb994.60 ppb - 38.8 ppb
201314.3 ppb993.80 ppb - 23.9 ppb
201420.8 ppb10106.80 ppb - 32.4 ppb
201518.1 ppb889.20 ppb - 37.6 ppb
201612.7 ppb10103.80 ppb - 24.1 ppb
201713.8 ppb881.30 ppb - 29.0 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

NOTE: Bodcaw Rural Water System purchases water from Hope Water Light Comm. which is required to test for chloroform. Sample information shown below was taken by Hope Water Light Comm..

Date Lab ID Result
2012-01-041200600240235.3 ppb
2012-01-0412006002602ND
2012-01-05120060032021.50 ppb
2012-01-05120060031024.10 ppb
2012-01-05120060025022.50 ppb
2012-01-05120060028025.40 ppb
2012-01-05120060030021.30 ppb
2012-01-051200600290241.7 ppb
2012-01-0512006002702ND
2012-04-041209601190262.5 ppb
2012-04-0412096011202ND
2012-04-041209601210269.0 ppb
2012-04-041209601160257.6 ppb
2012-04-041209601220259.9 ppb
2012-04-041209601200258.3 ppb
2012-04-041209601170244.3 ppb
2012-04-041209601180259.9 ppb
2012-05-021212400570262.8 ppb
2012-05-021212400550234.6 ppb
2012-05-021212400580281.4 ppb
2012-05-021212400560268.3 ppb
2012-07-0312187006301ND
2012-07-0412187006002ND
2012-07-041218700550282.2 ppb
2012-07-0412187005702ND
2012-07-041218700580222.8 ppb
2012-07-0412187005602ND
2012-07-041218700610269.6 ppb
2012-07-041218700590222.9 ppb
2012-07-04121870062026.00 ppb
2012-09-131225800080245.8 ppb
2012-09-1312258000702ND
2012-09-1312258000602ND
2012-10-0112278010401ND
2012-10-02122780110023.20 ppb
2012-10-0212278010702ND
2012-10-0212278010802ND
2012-10-0212278010902ND
2012-10-02122780111023.60 ppb
2012-10-0212278011302ND
2012-10-021227801140230.8 ppb
2012-10-021227801170116.4 ppb
2012-10-021227801120212.5 ppb
2013-01-0213004000902ND
2013-01-0213004000502ND
2013-01-02130040011022.70 ppb
2013-01-0213004000702ND
2013-01-0213004000602ND
2013-01-0213004001202ND
2013-01-021300400080235.8 ppb
2013-01-0213004000402ND
2013-04-021309400330280.3 ppb
2013-04-0213094003702ND
2013-04-0213094003802ND
2013-04-021309400340220.1 ppb
2013-04-021309400310226.8 ppb
2013-04-0213094003502ND
2013-04-02130940036021.20 ppb
2013-04-0213094004102ND
2013-07-0213184007602ND
2013-07-0213184007302ND
2013-07-021318400700255.6 ppb
2013-07-0213184007202ND
2013-07-021318400740212.6 ppb
2013-07-02131840071026.80 ppb
2013-07-0213184007702ND
2013-07-0213184007502ND
2013-08-1413227000301ND
2013-08-1413227000801ND
2013-08-141322700100142.8 ppb
2013-08-1413227000901ND
2013-08-1413227000401ND
2013-08-1413227000601ND
2013-08-14132270005010.570 ppb
2013-08-14132270007010.770 ppb
2013-09-1813262002401ND
2013-09-1813262002801ND
2013-09-1813262002301ND
2013-09-1813262002501ND
2013-09-1813262002601ND
2013-09-1813262002701ND
2013-09-181326200330142.8 ppb
2013-10-0113277003102ND
2013-10-011327700260219.7 ppb
2013-11-11133180017021.10 ppb
2013-11-111331800190249.5 ppb
2013-11-1113318001602ND
2013-11-11133180018024.20 ppb
2013-11-191332500210135.5 ppb
2014-01-07140100037021.20 ppb
2014-01-07140100039021.000 ppb
2014-01-07140100038021.20 ppb
2014-01-0714010004102ND
2014-04-0114094001302ND
2014-04-0114094000902ND
2014-04-011409400120250.0 ppb
2014-04-011409400100280.5 ppb
2014-05-2114142008902ND
2014-05-21141420086027.70 ppb
2014-05-211414200850266.9 ppb
2014-05-211414200870261.5 ppb
2014-07-021418401370249.3 ppb
2014-07-02141840136023.50 ppb
2014-07-0214184013902ND
2014-07-021418401350223.7 ppb
2014-08-19142330090011.02 ppb
2014-10-0114276000902ND
2014-10-01142760005021.80 ppb
2014-10-011427600080249.3 ppb
2014-10-01142760006026.20 ppb
2014-10-291430300270140.1 ppb
2015-01-05150080020021.70 ppb
2015-01-05150080019022.30 ppb
2015-01-0515008002302ND
2015-01-05150080022025.20 ppb
2015-04-061510000100227.2 ppb
2015-04-0615100001302ND
2015-04-061510000090240.3 ppb
2015-04-06151000012027.30 ppb
2015-07-0815190002101ND
2015-07-0815190003502123.0 ppb
2015-07-0815190003602ND
2015-07-0815190003202126.0 ppb
2015-07-0815190003302130.0 ppb
2015-10-051528200050272.7 ppb
2015-10-05152820006021.30 ppb
2015-10-051528200030261.3 ppb
2015-10-0515282000402107.0 ppb
2015-10-081528200560139.1 ppb
2015-10-2015296000401ND
2016-01-0616008010302ND
2016-01-0616008010202ND
2016-01-0616008010102ND
2016-01-06160080100023.50 ppb
2016-04-0416098011602ND
2016-04-0416098011502ND
2016-04-0416098011402ND
2016-04-04160980113021.30 ppb
2016-07-05161890104027.30 ppb
2016-07-051618901050277.4 ppb
2016-07-05161890106023.30 ppb
2016-07-0516189010702ND
2016-07-0516189010801ND
2016-07-0516189010901ND
2016-07-0516189011001ND
2016-07-0516189011101ND
2016-07-0516189011201ND
2016-07-0516189011301ND
2016-10-051628000930243.8 ppb
2016-10-051628000940250.0 ppb
2016-10-0516280009502ND
2016-10-051628000920259.3 ppb
2016-10-051628000890132.5 ppb
2017-01-0417005004802ND
2017-01-0417005004702ND
2017-01-041700500460218.0 ppb
2017-01-04170050045022.90 ppb
2017-04-051709600920225.8 ppb
2017-04-051709600930261.8 ppb
2017-04-0517096009402ND
2017-04-05170960095021.70 ppb
2017-07-0517187003602ND
2017-07-0517187003502ND
2017-07-0517187003702ND
2017-07-051718700380288.5 ppb
2017-07-1817200003901ND
2017-10-031727800210129.2 ppb
2017-10-041727800390299.2 ppb
2017-10-0417278003602ND
2017-10-0417278003802ND
2017-10-04172780037027.50 ppb