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EWG's Tap Water Database — 2019 UPDATE

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trans-1,3-Dichloropropene

Signal Hill - City, Water Department

1,3-Dichloropropene is a volatile cancer-causing chemical primarily used as a nematocide to fumigate agricultural soils. It exists in two different forms: cis-1,3-dichloropropene and trans-1,3-dichloropropene.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND10ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND70ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-232706-006-0715ND
2012-10-162706-005-0930ND
2013-04-232706-006-0710ND
2014-04-219588-006-1035ND
2014-10-239588-005-0940ND
2015-04-219588-006-0943ND
2015-10-229588-005-1005ND
2016-04-209588-006-1000ND
2016-10-209588-005-1110ND
2017-07-054790-017-1047ND
2017-07-054790-021-1049ND
2017-07-054790-022-1052ND
2017-08-014790-017-1317ND
2017-08-014790-021-1320ND
2017-08-014790-022-1322ND
2017-10-199588-005-1023ND