Know Your Environment. Protect Your Health.

trans-1,2-Dichloroethylene

Homestead Estates LLC

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND10ND
2020N/A00N/A
2021ND90ND
20221.75 ppb81ND - 14.0 ppb
20231.11 ppb81ND - 8.90 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
2019-04-231903714-01ND
2021-01-2755809-005ND
2021-04-1956624-005ND
2021-07-1957868-005ND
2021-07-262112113-01ND
2021-10-2559118-005ND
2021-10-2559118-004ND
2021-10-2559118-003ND
2021-10-2559118-001ND
2021-11-172117399-01ND
2022-02-2160167-005ND
2022-04-062122509-01ND
2022-04-2560884-005ND
2022-07-282204860-01ND
2022-08-092211483-01ND
2022-08-2262353-005ND
2022-10-242216918-0114.0 ppb
2022-11-2163637-005ND
2023-01-2364360-005ND
2023-02-272221190-01ND
2023-04-2865304-005ND
2023-05-302305679-018.90 ppb
2023-08-2566809-005ND
2023-09-112312846-01ND
2023-10-302319157-01ND
2023-11-3068046-005ND