Know Your Environment. Protect Your Health.

cis-1,2-Dichloroethylene

Altoona Waterworks

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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
20190.0620 ppb51ND - 0.310 ppb
2020ND80ND
20210.144 ppb52ND - 0.360 ppb
20220.320 ppb440.270 ppb - 0.410 ppb
20230.132 ppb114ND - 0.390 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 70 ppb

The legal limit for cis-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
2018-03-121044559ND
2018-06-191062457ND
2018-06-191062452ND
2018-09-181081371ND
2018-12-171097851ND
2019-03-1111087400.310 ppb
2019-06-181128839ND
2019-06-181128844ND
2019-09-161148215ND
2019-12-091164494ND
2020-06-161193784ND
2020-06-161193785ND
2020-06-161193781ND
2020-06-161193782ND
2020-06-161193783ND
2020-06-161193780ND
2020-09-151214813ND
2020-12-151232451ND
2021-03-1512438230.360 ppb
2021-03-1512438230.360 ppb
2021-06-151259378ND
2021-09-071275724ND
2021-11-081288394ND
2022-01-1912966850.410 ppb
2022-05-0313111240.320 ppb
2022-09-2113383610.270 ppb
2022-10-2013451960.280 ppb
2023-01-25CB00795-02ND
2023-01-26CB00861-02ND
2023-02-08CB01247-010.360 ppb
2023-06-12CB06321-090.390 ppb
2023-07-31CB08782-06ND
2023-07-31CB08782-12ND
2023-07-31CB08782-03ND
2023-07-31CB08782-090.350 ppb
2023-08-01CB08877-03ND
2023-08-01CB08877-06ND
2023-11-07CB13662-010.350 ppb