Know Your Environment. Protect Your Health.

1,1,1,2-Tetrachloroethane

City of Richwood

NOTE: City of Richwood purchases water from Brazosport Water Authority which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Brazosport Water Authority.

1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppb

The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

NOTE: City of Richwood purchases water from Brazosport Water Authority which is required to test for 1,1,1,2-tetrachloroethane. Sample information shown below was taken by Brazosport Water Authority.

Date Lab ID Result
2018-07-12AE33163ND
2019-07-08AE73438ND
2020-08-26AF25689ND
2021-08-16AF66462ND
2022-09-07AG11875ND
2023-08-24AG54042ND
2023-11-13AG63369ND