Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Spinsfield Commons

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND10ND
2020ND10ND
20212.50 ppb331.20 ppb - 4.60 ppb
20221.10 ppb43ND - 2.00 ppb
20230.325 ppb42ND - 0.700 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 60 ppb

The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 100 ppb

The legal limit for trans-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2018-11-291804742-01ND
2018-11-291815101-01ND
2019-09-171915631-01ND
2020-06-222006-02977-001ND
2021-03-222103-02814-0011.70 ppb
2021-07-152107-02568-0014.60 ppb
2021-10-282110-04882-0011.20 ppb
2022-01-272201-03503-001ND
2022-04-222204-03689-0011.40 ppb
2022-07-222207-04385-0012.00 ppb
2022-10-242210-04713-0011.000 ppb
2023-01-262301-04315-001ND
2023-04-192304-03951-001ND
2023-08-232308-05509-0010.700 ppb
2023-10-162310-03511-0010.600 ppb