Know Your Environment. Protect Your Health.

Dibromochloromethane

New London PWS

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

46

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.56 ppb87ND - 3.21 ppb
20190.766 ppb87ND - 1.38 ppb
20201.27 ppb880.860 ppb - 1.77 ppb
20210.954 ppb880.770 ppb - 1.19 ppb
20221.19 ppb880.660 ppb - 1.71 ppb
20231.97 ppb881.08 ppb - 3.15 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was 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 and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-22AD142131.14 ppb
2018-02-22AD142141.10 ppb
2018-05-17AD204471.76 ppb
2018-05-17AD204461.62 ppb
2018-08-13AD311193.21 ppb
2018-08-13AD311203.11 ppb
2018-11-14AD35657ND
2018-11-14AD356560.540 ppb
2019-02-14AD39325ND
2019-02-14AD393240.620 ppb
2019-05-14AD474050.680 ppb
2019-05-14AD474060.680 ppb
2019-08-19AD538441.38 ppb
2019-08-19AD538451.11 ppb
2019-12-05AD580310.850 ppb
2019-12-05AD580320.810 ppb
2020-02-1920019750.890 ppb
2020-02-1920019760.860 ppb
2020-05-2120088231.22 ppb
2020-05-2120088241.53 ppb
2020-08-1920142371.72 ppb
2020-08-1920142361.77 ppb
2020-11-2320179441.10 ppb
2020-11-2320179431.10 ppb
2021-02-2321005940.970 ppb
2021-02-2321005951.04 ppb
2021-05-1321108660.770 ppb
2021-05-1321108650.800 ppb
2021-08-1221152090.890 ppb
2021-08-1221152080.850 ppb
2021-11-1621194291.19 ppb
2021-11-1621194301.12 ppb
2022-02-2222018891.07 ppb
2022-03-0922037460.660 ppb
2022-05-1822114850.760 ppb
2022-05-1822114860.880 ppb
2022-08-1122161691.37 ppb
2022-08-1122161701.45 ppb
2022-11-1722210901.71 ppb
2022-11-1722210911.63 ppb
2023-02-1623005131.08 ppb
2023-02-1623005121.11 ppb
2023-05-1623080591.56 ppb
2023-05-1623080601.70 ppb
2023-08-1723132313.15 ppb
2023-08-1723132303.00 ppb
2023-11-2123181951.99 ppb
2023-11-2123181942.18 ppb