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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Goleta Water District

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

278

Samples

0

Samples exceeding legal limit (MCL)

216

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201411.0 ppb4535ND - 19.0 ppb
20159.74 ppb5837ND - 30.0 ppb
20167.18 ppb4635ND - 37.0 ppb
201710.9 ppb4138ND - 27.0 ppb
201811.8 ppb4233ND - 40.0 ppb
20198.25 ppb4638ND - 27.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-02-129590-049-095917.0 ppb
2014-02-129590-050-094715.0 ppb
2014-02-129590-051-083816.0 ppb
2014-02-129590-052-090314.0 ppb
2014-02-129590-053-092816.0 ppb
2014-02-129590-054-093915.0 ppb
2014-02-129590-055-091515.0 ppb
2014-02-129590-056-085113.0 ppb
2014-02-189588-001-1220ND
2014-03-189590-001-1127ND
2014-04-229590-001-1125ND
2014-05-149590-013-112012.0 ppb
2014-05-149590-049-105018.0 ppb
2014-05-149590-050-100516.0 ppb
2014-05-149590-051-082016.0 ppb
2014-05-149590-052-085517.0 ppb
2014-05-149590-053-093015.0 ppb
2014-05-149590-054-095018.0 ppb
2014-05-149590-055-091018.0 ppb
2014-05-149590-056-084016.0 ppb
2014-08-139590-013-12134.10 ppb
2014-08-139590-049-101019.0 ppb
2014-08-139590-050-103513.0 ppb
2014-08-139590-051-083018.0 ppb
2014-08-139590-052-091518.0 ppb
2014-08-139590-053-111511.0 ppb
2014-08-139590-054-105519.0 ppb
2014-08-139590-055-113517.0 ppb
2014-08-139590-056-085016.0 ppb
2014-08-279590-001-1057ND
2014-09-309590-001-1140ND
2014-10-219590-001-1100ND
2014-12-039590-001-1100ND
2014-12-049590-013-11335.30 ppb
2014-12-099590-034-1200ND
2014-12-119590-013-134213.0 ppb
2014-12-119590-049-124518.0 ppb
2014-12-119590-050-12325.60 ppb
2014-12-119590-051-111014.0 ppb
2014-12-119590-052-113217.0 ppb
2014-12-119590-053-1200ND
2014-12-119590-054-12183.00 ppb
2014-12-119590-055-11452.30 ppb
2014-12-119590-056-112416.0 ppb
2014-12-299590-035-1212ND
2015-01-159590-001-1157ND
2015-02-049590-033-1158ND
2015-02-119590-049-103512.0 ppb
2015-02-119590-050-102017.0 ppb
2015-02-119590-051-081513.0 ppb
2015-02-119590-052-08573.80 ppb
2015-02-119590-053-094511.0 ppb
2015-02-119590-054-10003.40 ppb
2015-02-119590-055-09263.50 ppb
2015-02-119590-056-084018.0 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
2015-05-139590-013-114510.00 ppb
2015-05-139590-049-105724.0 ppb
2015-05-139590-050-11127.40 ppb
2015-05-139590-051-083126.0 ppb
2015-05-139590-052-090928.0 ppb
2015-05-139590-053-10106.20 ppb
2015-05-139590-054-10379.60 ppb
2015-05-139590-055-09546.70 ppb
2015-05-139590-056-085324.0 ppb
2015-06-299590-001-1016ND
2015-07-239590-001-1107ND
2015-08-119590-001-1025ND
2015-08-129590-013-050715.0 ppb
2015-08-129590-049-040022.0 ppb
2015-08-129590-050-043120.0 ppb
2015-08-129590-051-033030.0 ppb
2015-08-129590-052-030530.0 ppb
2015-08-129590-053-0418ND
2015-08-129590-054-035420.0 ppb
2015-08-129590-055-032415.0 ppb
2015-08-129590-056-031028.0 ppb
2015-08-139590-013-125016.0 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
2015-11-173761-018-0743ND
2015-11-189590-018-1221ND
2015-11-239590-035-1100ND
2015-12-013761-018-09052.70 ppb
2015-12-013761-056-082520.4 ppb
2015-12-029590-001-1204ND
2015-12-089590-001-1110ND
2015-12-099590-013-113611.0 ppb
2015-12-099590-049-110122.0 ppb
2015-12-099590-050-104220.0 ppb
2015-12-099590-051-080317.0 ppb
2015-12-099590-052-08543.70 ppb
2015-12-099590-053-09491.10 ppb
2015-12-099590-054-101521.0 ppb
2015-12-099590-055-09225.50 ppb
2015-12-099590-056-083421.0 ppb
2016-02-089590-001-1049ND
2016-02-109590-049-10474.60 ppb
2016-02-109590-050-10476.50 ppb
2016-02-109590-051-081212.0 ppb
2016-02-109590-052-09083.00 ppb
2016-02-109590-053-11331.20 ppb
2016-02-109590-054-11103.30 ppb
2016-02-109590-055-09396.10 ppb
2016-02-109590-056-084117.0 ppb
2016-03-309590-018-0915ND
2016-05-109590-049-101512.0 ppb
2016-05-109590-050-10304.80 ppb
2016-05-109590-051-081521.0 ppb
2016-05-109590-052-09003.90 ppb
2016-05-109590-053-09401.40 ppb
2016-05-109590-054-10006.10 ppb
2016-05-109590-055-092010.00 ppb
2016-05-109590-056-084531.0 ppb
2016-05-189590-013-105815.0 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
2016-08-079590-049-045537.0 ppb
2016-08-079590-050-052234.0 ppb
2016-08-079590-051-071522.0 ppb
2016-08-079590-052-06454.40 ppb
2016-08-079590-053-04104.00 ppb
2016-08-079590-054-054520.0 ppb
2016-08-079590-055-06153.00 ppb
2016-08-079590-056-03306.80 ppb
2016-08-109590-041-1100ND
2016-08-169590-040-10301.10 ppb
2016-08-249590-001-1028ND
2016-10-059590-033-1045ND
2016-10-109590-045-11101.60 ppb
2016-11-169590-033-1045ND
2016-12-129590-049-04474.30 ppb
2016-12-129590-050-05054.10 ppb
2016-12-129590-051-054512.0 ppb
2016-12-129590-052-03223.50 ppb
2016-12-129590-053-04031.20 ppb
2016-12-129590-054-05206.50 ppb
2016-12-129590-055-03442.30 ppb
2016-12-129590-056-02583.80 ppb
2017-02-169590-049-10304.80 ppb
2017-02-169590-050-10501.40 ppb
2017-02-169590-051-08487.80 ppb
2017-02-169590-052-09522.80 ppb
2017-02-169590-053-10081.30 ppb
2017-02-169590-054-11105.20 ppb
2017-02-169590-055-09352.50 ppb
2017-02-169590-056-09128.50 ppb
2017-03-079590-001-14068.00 ppb
2017-03-289590-001-10005.30 ppb
2017-04-129590-013-120016.0 ppb
2017-05-049590-033-1100ND
2017-05-139590-049-06304.10 ppb
2017-05-139590-050-06006.40 ppb
2017-05-139590-051-034812.0 ppb
2017-05-139590-052-04402.90 ppb
2017-05-139590-053-05181.70 ppb
2017-05-139590-054-05406.80 ppb
2017-05-139590-055-05002.00 ppb
2017-05-139590-056-04103.80 ppb
2017-08-039590-042-11001.40 ppb
2017-08-099590-049-121826.0 ppb
2017-08-099590-050-115024.0 ppb
2017-08-099590-051-091220.0 ppb
2017-08-099590-052-102822.0 ppb
2017-08-099590-053-110022.0 ppb
2017-08-099590-054-113027.0 ppb
2017-08-099590-055-104123.0 ppb
2017-08-099590-056-094022.0 ppb
2017-11-079590-035-1030ND
2017-11-209590-041-10001.10 ppb
2017-11-279590-058-11001.40 ppb
2017-11-289590-059-1030ND
2017-12-139590-049-085019.0 ppb
2017-12-139590-050-082019.0 ppb
2017-12-139590-051-100520.0 ppb
2017-12-139590-052-063020.0 ppb
2017-12-139590-053-072019.0 ppb
2017-12-139590-054-075017.0 ppb
2017-12-139590-055-065220.0 ppb
2017-12-139590-056-060018.0 ppb
2018-02-149590-049-11006.70 ppb
2018-02-149590-050-11355.40 ppb
2018-02-149590-051-12456.30 ppb
2018-02-149590-052-09453.40 ppb
2018-02-149590-053-10381.40 ppb
2018-02-149590-054-12007.60 ppb
2018-02-149590-055-10102.90 ppb
2018-02-149590-056-09054.70 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
2018-05-089590-049-02307.80 ppb
2018-05-089590-050-02575.10 ppb
2018-05-089590-051-00389.80 ppb
2018-05-089590-052-01003.10 ppb
2018-05-089590-053-0155ND
2018-05-089590-054-03185.10 ppb
2018-05-089590-055-01302.10 ppb
2018-05-089590-056-001012.0 ppb
2018-05-149590-033-10452.20 ppb
2018-05-159590-026-1045ND
2018-08-169590-050-081025.0 ppb
2018-08-169590-051-091527.0 ppb
2018-08-169590-053-070525.0 ppb
2018-08-169590-054-084030.0 ppb
2018-08-169590-055-064027.0 ppb
2018-08-169590-056-055526.0 ppb
2018-08-239590-049-085040.0 ppb
2018-08-239590-052-091236.0 ppb
2018-10-039590-013-10578.80 ppb
2018-11-149590-049-081823.0 ppb
2018-11-149590-050-084022.0 ppb
2018-11-149590-051-095518.0 ppb
2018-11-149590-052-064819.0 ppb
2018-11-149590-053-074826.0 ppb
2018-11-149590-054-091023.0 ppb
2018-11-149590-056-061820.0 ppb
2018-12-079590-055-082414.0 ppb
2019-02-149590-049-06204.40 ppb
2019-02-149590-050-06394.10 ppb
2019-02-149590-051-07359.50 ppb
2019-02-149590-052-05143.20 ppb
2019-02-149590-053-05465.40 ppb
2019-02-149590-054-07022.50 ppb
2019-02-149590-055-05302.40 ppb
2019-02-149590-056-05018.10 ppb
2019-04-249590-042-1100ND
2019-04-259588-041-1030ND
2019-05-029588-038-1030ND
2019-05-099588-040-10304.00 ppb
2019-05-149590-049-07108.70 ppb
2019-05-149590-050-07305.70 ppb
2019-05-149590-051-082014.0 ppb
2019-05-149590-052-06005.60 ppb
2019-05-149590-053-06456.90 ppb
2019-05-149590-054-07509.80 ppb
2019-05-149590-055-06302.40 ppb
2019-05-149590-056-05353.90 ppb
2019-05-149588-058-10301.60 ppb
2019-05-219588-058-1030ND
2019-07-109588-031-12054.70 ppb
2019-07-129588-035-0825ND
2019-08-149590-049-064021.0 ppb
2019-08-149590-050-071521.0 ppb
2019-08-149590-051-081522.0 ppb
2019-08-149590-052-044522.0 ppb
2019-08-149590-053-060018.0 ppb
2019-08-149590-054-074820.0 ppb
2019-08-149590-055-052027.0 ppb
2019-08-149590-056-085520.0 ppb
2019-08-279588-018-1020ND
2019-09-179588-033-1015ND
2019-10-109588-013-11257.10 ppb
2019-10-149590-001-12051.50 ppb
2019-11-119590-049-07159.00 ppb
2019-11-119590-050-074520.0 ppb
2019-11-119590-051-08309.80 ppb
2019-11-119590-052-05404.80 ppb
2019-11-119590-053-064020.0 ppb
2019-11-119590-054-081515.0 ppb
2019-11-119590-055-06104.80 ppb
2019-11-119590-056-05007.20 ppb
2019-11-139588-026-1123ND
2019-11-149588-059-10152.20 ppb