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EWG's Tap Water Database — 2021 UPDATE

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1,2-Dichloropropane

Mountain Water Company

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.

MORE ABOUT THIS CONTAMINANT

 

83

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND110ND
2015ND140ND
2016ND160ND
2017ND170ND
2018ND130ND
2019ND120ND

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
2014-09-18B14091884-005CND
2014-09-18B14091884-005BND
2014-09-18B14091884-005AND
2014-10-13B14101125-005CND
2014-10-13B14101125-005BND
2014-10-13B14101125-005AND
2014-10-29B14102506-005AND
2014-10-29B14102506-005BND
2014-10-29B14102506-005CND
2014-12-01B14120125-002AND
2014-12-01B14120125-001AND
2015-02-26B15022051-002CND
2015-02-26B15022051-001CND
2015-09-23B15092184-006DND
2015-09-23B15092184-006CND
2015-09-23B15092184-006BND
2015-09-23B15092184-006AND
2015-10-08B15100826-006AND
2015-10-08B15100826-006BND
2015-10-08B15100826-008AND
2015-10-08B15100826-007AND
2015-11-04B15110444-006DND
2015-11-04B15110444-006CND
2015-11-04B15110444-006BND
2015-11-04B15110444-006AND
2016-05-24B16051932-001BND
2016-08-23B16082328-001BND
2016-09-14B16091275-006BND
2016-09-14B16091275-006AND
2016-09-14B16091275-006CND
2016-09-14B16091275-006DND
2016-09-21B16091896-007DND
2016-09-21B16091896-007CND
2016-09-21B16091896-007BND
2016-09-21B16091896-007AND
2016-09-28B16092451-005CND
2016-09-28B16092451-005BND
2016-09-28B16092451-005AND
2016-10-18B16101448-004AND
2016-10-18B16101448-003AND
2016-10-18B16101448-002AND
2017-03-08H17030158-001FND
2017-03-08H17030156-001FND
2017-03-08H17030154-001FND
2017-09-13B17091233-006AND
2017-09-13B17091233-001BND
2017-10-24B17102253-004DND
2017-10-24B17102253-003DND
2017-10-24B17102253-002DND
2017-10-24B17102253-001DND
2017-11-01B17110168-003CND
2017-11-01B17110168-001CND
2017-11-01B17110168-002CND
2017-11-01B17110168-004DND
2017-11-21B17111863-004CND
2017-11-21B17111863-003CND
2017-11-21B17111863-002CND
2017-11-21B17111863-001CND
2018-05-15B18051514-001FND
2018-05-15B18051508-001FND
2018-05-23B18052237-001GND
2018-06-05B18060423-001GND
2018-06-19B18061823-001FND
2018-07-17B18071604-001GND
2018-07-17B18071571-001GND
2018-07-18B18071799-001GND
2018-07-18B18071741-001GND
2018-07-31B18080102-001BND
2018-09-05B18090421-001AND
2018-09-05B18090419-001AND
2018-09-05B18090357-001GND
2019-05-07B19050690-001BND
2019-05-14B19051387-001GND
2019-05-22B19052006-001FND
2019-06-04B19060314-001GND
2019-06-11B19061058-001FND
2019-06-18B19061773-001FND
2019-07-09B19070912-002AND
2019-07-17B19071738-001GND
2019-07-23B19072150-001FND
2019-08-07B19080745-001GND
2019-08-13B19081351-001GND
2019-08-20B19082022-001GND