1,2-Dichloropropane

Rochester

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	26	ND
2015	ND	6	ND
2016	ND	24	ND
2017	ND	15	ND
2018	ND	14	ND
2019	ND	5	ND

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
2014-02-11	14B0780-01	ND
2014-05-19	14E2394-01	ND
2014-05-19	14E2419-03	ND
2014-05-19	14E2419-02	ND
2014-05-19	14E2406-02	ND
2014-05-19	14E2406-01	ND
2014-05-19	14E2400-03	ND
2014-05-19	14E2400-02	ND
2014-05-19	14E2398-01	ND
2014-05-19	14E2396-03	ND
2014-05-19	14E2396-02	ND
2014-05-19	14E2396-01	ND
2014-05-19	14E2394-03	ND
2014-05-19	14E2394-02	ND
2014-05-19	14E2400-01	ND
2014-06-02	14F0260-01	ND
2014-06-02	14F0261-02	ND
2014-06-02	14F0261-01	ND
2014-06-02	14F0254-01	ND
2014-06-02	14F0251-01	ND
2014-06-02	14F0243-01	ND
2014-09-15	14I0885-01	ND
2014-09-15	14I0887-01	ND
2014-09-16	14I0881-01	ND
2014-09-16	14I0886-02	ND
2014-11-03	14K0413-01	ND
2015-06-04	15F0388-01	ND
2015-06-29	15F1849-04	ND
2015-06-29	15F1851-01	ND
2015-06-29	15F1849-02	ND
2015-06-29	15F1849-01	ND
2015-09-28	15I1399-01	ND
2016-04-04	3424551	ND
2016-04-04	3424537	ND
2016-04-04	3424518	ND
2016-04-04	3424506	ND
2016-04-04	3424494	ND
2016-04-04	3424483	ND
2016-04-04	3424472	ND
2016-04-04	3424460	ND
2016-04-04	3424444	ND
2016-04-04	3424434	ND
2016-04-05	3425193	ND
2016-04-05	3425261	ND
2016-04-05	3425247	ND
2016-04-05	3425220	ND
2016-04-05	3425160	ND
2016-04-05	3425168	ND
2016-04-05	3425176	ND
2016-04-05	3425211	ND
2016-04-05	3425185	ND
2016-04-05	3425201	ND
2016-04-13	3430432	ND
2016-04-13	3430448	ND
2016-12-27	16L0920-01	ND
2016-12-27	16L0919-01	ND
2017-03-09	17C0558-02	ND
2017-03-09	17C0558-01	ND
2017-06-19	17F1311-03	ND
2017-06-19	17F1311-04	ND
2017-06-19	17F1311-02	ND
2017-06-19	17F1311-01	ND
2017-06-19	17F1309-04	ND
2017-06-19	17F1309-03	ND
2017-06-19	17F1309-01	ND
2017-06-19	17F1301-03	ND
2017-06-19	17F1301-02	ND
2017-06-19	17F1301-01	ND
2017-06-19	17F1297-01	ND
2017-09-26	17I1225-01	ND
2017-09-26	17I1233-01	ND
2018-03-29	18C1134-01	ND
2018-06-19	18F1352-02	ND
2018-06-19	18F1352-01	ND
2018-06-19	18F1334-04	ND
2018-06-19	18F1351-04	ND
2018-06-19	18F1348-03	ND
2018-06-19	18F1342-04	ND
2018-06-19	18F1342-02	ND
2018-06-19	18F1339-02	ND
2018-06-19	18F1334-03	ND
2018-06-19	18F1334-02	ND
2018-09-25	18I1341-01	ND
2018-09-25	18I1341-03	ND
2018-12-27	18L0843-01	ND
2019-03-28	19C1256-01	ND
2019-06-24	19F1660-01	ND
2019-09-12	19I0687-01	ND
2019-11-19	19K0864-01	ND
2019-11-19	19K0864-02	ND