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EWG's Tap Water Database — 2019 UPDATE

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1,2-Dichloropropane

San Gabriel County WD

1,2-Dichloropropane is a volatile carcinogenic solvent discharged from chemical factories and landfills. It also contaminates farmland due to its former use as a soil fumigant. Read More.

The insecticide and fumigant uses of 1,2-dichloropropane were discontinued in the 1980s, but it is still used as an industrial solvent. The California public health goal of 0.5 parts per billion, set to protect against cancer, is 10 times lower than the amount allowed by the federal government, which is a Maximum Contaminant Level of 5 parts per billion. 1,2-Dichloropropane can also damage the nervous system, liver, kidneys, and digestive and respiratory systems.

Click here to read more about carcinogenic VOCs.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND90ND
2013ND60ND
2014ND70ND
2015ND50ND
2016ND50ND
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for 1,2-dichloropropane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 5 ppb

The legal limit for 1,2-dichloropropane, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2012-02-073761-001-1005ND
2012-04-189588-007-1100ND
2012-05-013761-001-1135ND
2012-07-033761-001-1040ND
2012-07-179588-009-0915ND
2012-07-179588-010-0930ND
2012-07-179588-011-1015ND
2012-08-073761-001-0000ND
2012-11-073761-001-1120ND
2013-04-109588-007-0915ND
2013-05-243761-020-1125ND
2013-07-159588-009-0950ND
2013-07-159588-010-1005ND
2013-08-139588-011-0945ND
2013-08-139588-001-1015ND
2014-04-089588-007-0940ND
2014-06-173761-020-1020ND
2014-07-149588-009-0900ND
2014-07-149588-010-0915ND
2014-07-149588-011-0945ND
2014-07-159588-001-1000ND
2014-12-059588-020-0910ND
2015-03-179588-020-1050ND
2015-06-119588-007-0905ND
2015-07-169588-010-1000ND
2015-07-169588-001-0940ND
2015-07-169588-011-1020ND
2016-04-139588-007-0940ND
2016-07-189588-011-0950ND
2016-07-189588-009-0925ND
2016-07-189588-010-0935ND
2016-09-159588-020-0910ND
2017-04-139588-007-0925ND
2017-07-179588-009-0905ND
2017-07-179588-011-0945ND
2017-07-179588-010-0925ND
2017-07-179588-020-1025ND