Know Your Environment. Protect Your Health.

1,1-Dichloroethylene

Upper Hanover Water Authority

1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.

 

50

Samples

2

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.70 ppb64ND - 6.00 ppb
20193.56 ppb53ND - 7.00 ppb
20203.90 ppb95ND - 8.10 ppb
20211.26 ppb102ND - 6.50 ppb
2022ND130ND
2023ND70ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 7 ppb

The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-308001978-016.00 ppb
2018-04-258008140-015.50 ppb
2018-07-178017906-015.30 ppb
2018-07-258019752-01ND
2018-07-258019752-02ND
2018-10-108028641-015.40 ppb
2019-01-238038660-015.00 ppb
2019-05-079009685-017.00 ppb
2019-08-218038658-01ND
2019-09-249034252-01ND
2019-12-119033962-015.80 ppb
2020-03-1821847896.008.10 ppb
2020-03-2021847928.007.50 ppb
2020-03-2021847927.00ND
2020-04-2822024169.006.80 ppb
2020-04-2822024168.00ND
2020-06-2422417303.00ND
2020-07-0122417304.006.50 ppb
2020-10-0623183411.006.20 ppb
2020-11-2023362968.00ND
2021-03-1624061096.00ND
2021-03-1924061097.006.50 ppb
2021-04-2124248445.00ND
2021-04-3024248597.00ND
2021-07-0624829856.00ND
2021-07-0924830009.00ND
2021-10-0525405590.006.10 ppb
2021-10-2925405747.00ND
2021-12-2925765025.00ND
2021-12-2925765004.00ND
2022-02-0125943616.00ND
2022-02-0125943615.00ND
2022-02-0125943617.00ND
2022-02-2326118545.00ND
2022-02-2326118546.00ND
2022-05-0526649364.00ND
2022-05-0626649365.00ND
2022-06-0226649542.00ND
2022-06-0326649543.00ND
2022-07-0727037983.00ND
2022-07-0827037984.00ND
2022-12-0127999412.00ND
2022-12-0227999413.00ND
2023-01-0428173529.00ND
2023-04-1028703163.00ND
2023-04-1128703162.00ND
2023-04-1128703161.00ND
2023-07-0329302590.00ND
2023-10-0329700864.00ND
2023-11-2830246501.00ND