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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Goleta Water District

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

 

278

Samples

0

Samples exceeding legal limit (MCL)

210

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201414.6 ppb4536ND - 30.0 ppb
20158.04 ppb5840ND - 30.0 ppb
20164.24 ppb4633ND - 24.0 ppb
201715.7 ppb4134ND - 61.0 ppb
201812.9 ppb4231ND - 46.0 ppb
20199.79 ppb4636ND - 39.0 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

Date Lab ID Result
2014-02-129590-049-095930.0 ppb
2014-02-129590-050-094722.0 ppb
2014-02-129590-051-083825.0 ppb
2014-02-129590-052-090322.0 ppb
2014-02-129590-053-092828.0 ppb
2014-02-129590-054-093922.0 ppb
2014-02-129590-055-091518.0 ppb
2014-02-129590-056-085118.0 ppb
2014-02-189588-001-1220ND
2014-03-189590-001-1127ND
2014-04-229590-001-1125ND
2014-05-149590-013-112013.0 ppb
2014-05-149590-049-105030.0 ppb
2014-05-149590-050-100519.0 ppb
2014-05-149590-051-082022.0 ppb
2014-05-149590-052-085526.0 ppb
2014-05-149590-053-093017.0 ppb
2014-05-149590-054-095025.0 ppb
2014-05-149590-055-091022.0 ppb
2014-05-149590-056-084020.0 ppb
2014-08-139590-013-12135.50 ppb
2014-08-139590-049-101025.0 ppb
2014-08-139590-050-103516.0 ppb
2014-08-139590-051-083022.0 ppb
2014-08-139590-052-091523.0 ppb
2014-08-139590-053-111514.0 ppb
2014-08-139590-054-105523.0 ppb
2014-08-139590-055-113520.0 ppb
2014-08-139590-056-085019.0 ppb
2014-08-279590-001-1057ND
2014-09-309590-001-1140ND
2014-10-219590-001-1100ND
2014-12-039590-001-1100ND
2014-12-049590-013-11337.80 ppb
2014-12-099590-034-1200ND
2014-12-119590-013-134216.0 ppb
2014-12-119590-049-124520.0 ppb
2014-12-119590-050-12326.10 ppb
2014-12-119590-051-111015.0 ppb
2014-12-119590-052-113219.0 ppb
2014-12-119590-053-12003.00 ppb
2014-12-119590-054-12182.90 ppb
2014-12-119590-055-11454.30 ppb
2014-12-119590-056-112418.0 ppb
2014-12-299590-035-1212ND
2015-01-159590-001-1157ND
2015-02-049590-033-11581.10 ppb
2015-02-119590-049-10357.50 ppb
2015-02-119590-050-102019.0 ppb
2015-02-119590-051-081513.0 ppb
2015-02-119590-052-08573.60 ppb
2015-02-119590-053-09459.60 ppb
2015-02-119590-054-10002.70 ppb
2015-02-119590-055-09263.80 ppb
2015-02-119590-056-084020.0 ppb
2015-02-129590-001-1242ND
2015-03-119590-001-1238ND
2015-03-269590-031-0955ND
2015-04-159590-026-1128ND
2015-04-169590-001-1129ND
2015-05-139590-013-114511.0 ppb
2015-05-139590-049-105722.0 ppb
2015-05-139590-050-11125.00 ppb
2015-05-139590-051-083124.0 ppb
2015-05-139590-052-090930.0 ppb
2015-05-139590-053-10104.70 ppb
2015-05-139590-054-10376.70 ppb
2015-05-139590-055-09546.30 ppb
2015-05-139590-056-085323.0 ppb
2015-06-299590-001-1016ND
2015-07-239590-001-1107ND
2015-08-119590-001-1025ND
2015-08-129590-013-050711.0 ppb
2015-08-129590-049-040017.0 ppb
2015-08-129590-050-043114.0 ppb
2015-08-129590-051-033024.0 ppb
2015-08-129590-052-030524.0 ppb
2015-08-129590-053-04181.20 ppb
2015-08-129590-054-035414.0 ppb
2015-08-129590-055-03249.70 ppb
2015-08-129590-056-031022.0 ppb
2015-08-139590-013-125011.0 ppb
2015-09-169590-001-1209ND
2015-10-019590-034-1205ND
2015-10-139590-001-1230ND
2015-10-289590-032-1020ND
2015-11-109590-001-1020ND
2015-11-173761-018-07433.30 ppb
2015-11-189590-018-12212.40 ppb
2015-11-239590-035-1100ND
2015-12-013761-018-09053.10 ppb
2015-12-013761-056-082517.6 ppb
2015-12-029590-001-1204ND
2015-12-089590-001-1110ND
2015-12-099590-013-11366.50 ppb
2015-12-099590-049-110115.0 ppb
2015-12-099590-050-104213.0 ppb
2015-12-099590-051-080311.0 ppb
2015-12-099590-052-08542.20 ppb
2015-12-099590-053-0949ND
2015-12-099590-054-101514.0 ppb
2015-12-099590-055-09222.10 ppb
2015-12-099590-056-083415.0 ppb
2016-02-089590-001-10494.30 ppb
2016-02-109590-049-10471.80 ppb
2016-02-109590-050-10472.80 ppb
2016-02-109590-051-08127.40 ppb
2016-02-109590-052-09082.40 ppb
2016-02-109590-053-1133ND
2016-02-109590-054-11101.10 ppb
2016-02-109590-055-09392.70 ppb
2016-02-109590-056-084111.0 ppb
2016-03-309590-018-09151.80 ppb
2016-05-109590-049-10155.10 ppb
2016-05-109590-050-10302.60 ppb
2016-05-109590-051-081514.0 ppb
2016-05-109590-052-09002.40 ppb
2016-05-109590-053-0940ND
2016-05-109590-054-10002.00 ppb
2016-05-109590-055-09204.10 ppb
2016-05-109590-056-084524.0 ppb
2016-05-189590-013-10588.30 ppb
2016-06-149590-018-1040ND
2016-06-149590-026-1040ND
2016-07-199590-038-1100ND
2016-08-029590-026-1050ND
2016-08-029590-042-1030ND
2016-08-079590-049-045524.0 ppb
2016-08-079590-050-052220.0 ppb
2016-08-079590-051-071512.0 ppb
2016-08-079590-052-06452.40 ppb
2016-08-079590-053-04102.30 ppb
2016-08-079590-054-054512.0 ppb
2016-08-079590-055-06152.20 ppb
2016-08-079590-056-03303.40 ppb
2016-08-109590-041-1100ND
2016-08-169590-040-10301.10 ppb
2016-08-249590-001-1028ND
2016-10-059590-033-1045ND
2016-10-109590-045-1110ND
2016-11-169590-033-1045ND
2016-12-129590-049-04471.90 ppb
2016-12-129590-050-05052.00 ppb
2016-12-129590-051-05455.90 ppb
2016-12-129590-052-03222.00 ppb
2016-12-129590-053-0403ND
2016-12-129590-054-05202.70 ppb
2016-12-129590-055-03441.40 ppb
2016-12-129590-056-02582.00 ppb
2017-02-169590-049-10302.00 ppb
2017-02-169590-050-1050ND
2017-02-169590-051-08483.50 ppb
2017-02-169590-052-09521.80 ppb
2017-02-169590-053-1008ND
2017-02-169590-054-11102.20 ppb
2017-02-169590-055-09351.40 ppb
2017-02-169590-056-09123.90 ppb
2017-03-079590-001-14062.80 ppb
2017-03-289590-001-10002.60 ppb
2017-04-129590-013-120021.0 ppb
2017-05-049590-033-1100ND
2017-05-139590-049-06302.90 ppb
2017-05-139590-050-06005.20 ppb
2017-05-139590-051-034818.0 ppb
2017-05-139590-052-04401.90 ppb
2017-05-139590-053-05181.30 ppb
2017-05-139590-054-05405.20 ppb
2017-05-139590-055-05001.50 ppb
2017-05-139590-056-04102.50 ppb
2017-08-039590-042-1100ND
2017-08-099590-049-121850.0 ppb
2017-08-099590-050-115046.0 ppb
2017-08-099590-051-091233.0 ppb
2017-08-099590-052-102841.0 ppb
2017-08-099590-053-110039.0 ppb
2017-08-099590-054-113061.0 ppb
2017-08-099590-055-104143.0 ppb
2017-08-099590-056-094039.0 ppb
2017-11-079590-035-1030ND
2017-11-209590-041-10001.60 ppb
2017-11-279590-058-1100ND
2017-11-289590-059-1030ND
2017-12-139590-049-085027.0 ppb
2017-12-139590-050-082027.0 ppb
2017-12-139590-051-100530.0 ppb
2017-12-139590-052-063030.0 ppb
2017-12-139590-053-072026.0 ppb
2017-12-139590-054-075014.0 ppb
2017-12-139590-055-065228.0 ppb
2017-12-139590-056-060027.0 ppb
2018-02-149590-049-11002.50 ppb
2018-02-149590-050-11352.10 ppb
2018-02-149590-051-12453.00 ppb
2018-02-149590-052-09451.70 ppb
2018-02-149590-053-1038ND
2018-02-149590-054-12003.30 ppb
2018-02-149590-055-10101.40 ppb
2018-02-149590-056-09052.10 ppb
2018-03-069590-032-1045ND
2018-03-079590-034-1030ND
2018-03-159590-031-1030ND
2018-03-202920-035-1030ND
2018-03-209590-035-1030ND
2018-03-269590-001-1030ND
2018-04-119590-018-1030ND
2018-05-089590-049-02303.70 ppb
2018-05-089590-050-02572.70 ppb
2018-05-089590-051-00386.90 ppb
2018-05-089590-052-01001.80 ppb
2018-05-089590-053-0155ND
2018-05-089590-054-03182.60 ppb
2018-05-089590-055-01301.50 ppb
2018-05-089590-056-00109.00 ppb
2018-05-149590-033-1045ND
2018-05-159590-026-1045ND
2018-08-169590-050-081031.0 ppb
2018-08-169590-051-091541.0 ppb
2018-08-169590-053-070534.0 ppb
2018-08-169590-054-084046.0 ppb
2018-08-169590-055-064038.0 ppb
2018-08-169590-056-055536.0 ppb
2018-08-239590-049-085032.0 ppb
2018-08-239590-052-091232.0 ppb
2018-10-039590-013-10577.60 ppb
2018-11-149590-049-081827.0 ppb
2018-11-149590-050-084026.0 ppb
2018-11-149590-051-095522.0 ppb
2018-11-149590-052-064824.0 ppb
2018-11-149590-053-074834.0 ppb
2018-11-149590-054-091026.0 ppb
2018-11-149590-056-061825.0 ppb
2018-12-079590-055-082414.0 ppb
2019-02-149590-049-06202.20 ppb
2019-02-149590-050-06392.10 ppb
2019-02-149590-051-073516.0 ppb
2019-02-149590-052-05141.60 ppb
2019-02-149590-053-05463.10 ppb
2019-02-149590-054-07021.30 ppb
2019-02-149590-055-05301.40 ppb
2019-02-149590-056-050111.0 ppb
2019-04-249590-042-1100ND
2019-04-259588-041-1030ND
2019-05-029588-038-1030ND
2019-05-099588-040-10302.80 ppb
2019-05-149590-049-07104.50 ppb
2019-05-149590-050-07303.80 ppb
2019-05-149590-051-082020.0 ppb
2019-05-149590-052-06002.60 ppb
2019-05-149590-053-06454.00 ppb
2019-05-149590-054-07504.60 ppb
2019-05-149590-055-06302.20 ppb
2019-05-149590-056-05353.30 ppb
2019-05-149588-058-1030ND
2019-05-219588-058-1030ND
2019-07-109588-031-12058.60 ppb
2019-07-129588-035-0825ND
2019-08-149590-049-064028.0 ppb
2019-08-149590-050-071528.0 ppb
2019-08-149590-051-081532.0 ppb
2019-08-149590-052-044532.0 ppb
2019-08-149590-053-060025.0 ppb
2019-08-149590-054-074826.0 ppb
2019-08-149590-055-052039.0 ppb
2019-08-149590-056-085530.0 ppb
2019-08-279588-018-1020ND
2019-09-179588-033-1015ND
2019-10-109588-013-11255.80 ppb
2019-10-149590-001-12054.00 ppb
2019-11-119590-049-07157.60 ppb
2019-11-119590-050-074529.0 ppb
2019-11-119590-051-08307.80 ppb
2019-11-119590-052-05403.70 ppb
2019-11-119590-053-064025.0 ppb
2019-11-119590-054-081519.0 ppb
2019-11-119590-055-06104.60 ppb
2019-11-119590-056-05008.90 ppb
2019-11-139588-026-1123ND
2019-11-149588-059-1015ND