Know Your Environment. Protect Your Health.

1,1-Dichloroethylene

East Lyme Water & Sewer Commission

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

 

120

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.600 ppb188ND - 3.30 ppb
20190.981 ppb2616ND - 4.10 ppb
20201.10 ppb2015ND - 2.90 ppb
20210.558 ppb1911ND - 2.10 ppb
20220.745 ppb2213ND - 2.00 ppb
20230.933 ppb158ND - 2.80 ppb

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
2018-02-06115853GEND
2018-02-06115854GEND
2018-02-06115855GEND
2018-02-06115856GEND
2018-05-22117860GEND
2018-05-22117861GEND
2018-09-041199320.800 ppb
2018-09-041199343.30 ppb
2018-09-041199361.000 ppb
2018-09-041199380.500 ppb
2018-09-07120043ND
2018-09-07120044ND
2018-12-051217131.000 ppb
2018-12-051217151.000 ppb
2018-12-051217171.90 ppb
2018-12-051217191.30 ppb
2018-12-18121897ND
2018-12-18121898ND
2019-03-061232702.00 ppb
2019-03-061232720.900 ppb
2019-03-061232741.70 ppb
2019-03-061232761.40 ppb
2019-03-06123278ND
2019-03-06123279ND
2019-06-181253860.600 ppb
2019-06-181253881.30 ppb
2019-06-181253901.60 ppb
2019-06-181253921.60 ppb
2019-06-27125673ND
2019-06-27125674ND
2019-09-10127389ND
2019-09-10127390ND
2019-09-10127391ND
2019-09-191276690.700 ppb
2019-09-191276711.50 ppb
2019-09-191276732.30 ppb
2019-09-191276754.10 ppb
2019-12-061292790.900 ppb
2019-12-061292811.70 ppb
2019-12-061292831.60 ppb
2019-12-061292851.60 ppb
2019-12-18129475ND
2019-12-18129476ND
2019-12-18129477ND
2020-03-041308281.60 ppb
2020-03-041308300.900 ppb
2020-03-041308320.800 ppb
2020-03-041308341.10 ppb
2020-06-041325941.90 ppb
2020-06-04132596ND
2020-06-041325981.40 ppb
2020-06-041326001.000 ppb
2020-06-12132842ND
2020-06-12132843ND
2020-06-12132844ND
2020-06-12132845ND
2020-09-111347311.80 ppb
2020-09-111347331.10 ppb
2020-09-111347352.90 ppb
2020-09-111347372.00 ppb
2020-12-071366271.30 ppb
2020-12-071366290.900 ppb
2020-12-071366312.00 ppb
2020-12-071366331.30 ppb
2021-03-081383161.50 ppb
2021-03-081383180.900 ppb
2021-03-081383202.10 ppb
2021-03-081383220.800 ppb
2021-06-10140339ND
2021-06-10140341ND
2021-06-101403430.600 ppb
2021-06-10140345ND
2021-07-28141339ND
2021-09-131422890.700 ppb
2021-09-131422910.900 ppb
2021-09-131422931.000 ppb
2021-09-13142295ND
2021-09-22142552ND
2021-12-14144217ND
2021-12-141442190.500 ppb
2021-12-141442210.800 ppb
2021-12-141442230.800 ppb
2021-12-22144436ND
2022-03-02145828ND
2022-03-02145830ND
2022-03-021458320.800 ppb
2022-03-021458340.900 ppb
2022-03-04145957ND
2022-03-04145958ND
2022-03-04145959ND
2022-06-061484411.000 ppb
2022-06-06148443ND
2022-06-061484451.50 ppb
2022-06-061484471.10 ppb
2022-06-23149001ND
2022-09-091510921.50 ppb
2022-09-091510941.000 ppb
2022-09-091510962.00 ppb
2022-09-091510981.40 ppb
2022-09-21151447ND
2022-12-07153661ND
2022-12-081537141.50 ppb
2022-12-081537161.000 ppb
2022-12-081537181.50 ppb
2022-12-081537201.20 ppb
2023-03-071562451.40 ppb
2023-03-071562471.20 ppb
2023-03-071562491.90 ppb
2023-03-071562511.60 ppb
2023-06-051589991.60 ppb
2023-06-051590012.80 ppb
2023-06-051590031.90 ppb
2023-06-051590051.60 ppb
2023-06-07159215ND
2023-09-18163136ND
2023-09-18163137ND
2023-09-18163138ND
2023-09-18163139ND
2023-09-18163140ND
2023-12-15166455ND