Know Your Environment. Protect Your Health.

Bromoform

East Lyme Water & Sewer Commission

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

39

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND100ND
20190.0540 ppb101ND - 0.540 ppb
20200.325 ppb42ND - 0.700 ppb
2021ND30ND
20220.617 ppb63ND - 1.40 ppb
20230.250 ppb62ND - 0.900 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform is based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development .

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-06115854GEND
2018-02-06115853GEND
2018-02-06115856GEND
2018-02-06115855GEND
2018-05-22117860GEND
2018-05-22117861GEND
2018-09-07120043ND
2018-09-07120044ND
2018-12-18121897ND
2018-12-18121898ND
2019-03-06123278ND
2019-03-06123279ND
2019-06-27125673ND
2019-06-27125674ND
2019-09-10127389ND
2019-09-10127390ND
2019-09-10127391ND
2019-12-18129477ND
2019-12-18129475ND
2019-12-181294760.540 ppb
2020-06-12132842ND
2020-06-121328430.700 ppb
2020-06-121328440.600 ppb
2020-06-12132845ND
2021-07-28141339ND
2021-09-22142552ND
2021-12-22144436ND
2022-03-041459581.20 ppb
2022-03-041459591.40 ppb
2022-03-041459571.10 ppb
2022-06-23149001ND
2022-09-21151447ND
2022-12-07153661ND
2023-06-07159215ND
2023-09-18163136ND
2023-09-18163137ND
2023-09-181631380.900 ppb
2023-09-18163139ND
2023-09-181631400.600 ppb