Know Your Environment. Protect Your Health.

1,2-Dichloropropane

Woods of Ashbury S/d

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.08 ppb42ND - 2.70 ppb
2019ND40ND
20200.395 ppb21ND - 0.790 ppb
2021ND20ND
2022ND10ND
20230.586 ppb110.586 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-08-24CB08339-012.70 ppb
2018-08-24CB08339-031.60 ppb
2018-12-05CB15011-03ND
2018-12-26CB20251-01ND
2019-05-02CC04418-01ND
2019-08-14CC10759-01ND
2019-08-14CC10759-03ND
2019-10-29CC15996-01ND
2020-07-22CD08430-010.790 ppb
2020-07-22CD08430-03ND
2021-08-10CE07713-01ND
2021-08-10CE07713-03ND
2022-09-13CF07227-01ND
2023-09-2837729_23-552370.586 ppb