Know Your Environment. Protect Your Health.

Bromodichloromethane

Connecticut Water Company - Northern Region-Western System

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

 

218

Samples

0

Samples exceeding legal limit (MCL)

206

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201811.0 ppb3836ND - 17.4 ppb
20199.94 ppb34340.600 ppb - 15.6 ppb
20208.43 ppb3834ND - 14.6 ppb
20218.69 ppb34340.500 ppb - 16.3 ppb
20228.93 ppb4035ND - 15.0 ppb
20239.56 ppb3433ND - 17.0 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2018-01-23BZ78888VOC15.70 ppb
2018-01-31BZ82950VOC1ND
2018-02-01BZ83504TTHM9.80 ppb
2018-02-01BZ83505TTHM12.0 ppb
2018-02-01BZ83506TTHM12.0 ppb
2018-02-01BZ83507TTHM13.0 ppb
2018-02-01BZ83508TTHM6.70 ppb
2018-02-01BZ83509TTHM7.10 ppb
2018-02-01BZ83510TTHM6.50 ppb
2018-02-21BZ93283TTHM8.70 ppb
2018-05-03CA41161TTHM10.00 ppb
2018-05-03CA41162TTHM13.0 ppb
2018-05-03CA41163TTHM13.0 ppb
2018-05-03CA41164TTHM14.0 ppb
2018-05-03CA41165TTHM6.10 ppb
2018-05-03CA41166TTHM7.40 ppb
2018-05-03CA41167TTHM7.70 ppb
2018-05-03D8E0468-01VOC14.1 ppb
2018-05-15CA48118TTHM10.00 ppb
2018-07-13CA89901ND
2018-08-02CB0402011.0 ppb
2018-08-02CB0402117.0 ppb
2018-08-02CB0402215.0 ppb
2018-08-02CB0402315.0 ppb
2018-08-02CB040248.90 ppb
2018-08-02CB0402513.0 ppb
2018-08-02CB0402613.0 ppb
2018-08-06CB0584015.0 ppb
2018-08-10DBP 20050203115.0 ppb
2018-08-10CB0915417.0 ppb
2018-11-01DBP 20051113314.3 ppb
2018-11-01DBP 20051113416.1 ppb
2018-11-01DBP 20051113516.8 ppb
2018-11-01DBP 20051113617.4 ppb
2018-11-01DBP 20051113710.4 ppb
2018-11-01DBP 2005111387.40 ppb
2018-11-01DBP 2005111399.00 ppb
2018-11-05DBP 20051138910.2 ppb
2019-01-02VOC1 2005173095.40 ppb
2019-02-07DBP 2005210835.80 ppb
2019-02-07DBP 20052108411.5 ppb
2019-02-07DBP 2005210856.20 ppb
2019-02-07DBP 20052108611.4 ppb
2019-02-07DBP 2005210876.10 ppb
2019-02-07DBP 20052108812.5 ppb
2019-02-07DBP 20052108910.3 ppb
2019-02-11DBP 2005212567.60 ppb
2019-03-15VOC1 2005248830.600 ppb
2019-05-09DBP 2005315758.50 ppb
2019-05-09DBP 20053157611.0 ppb
2019-05-09DBP 20053157710.8 ppb
2019-05-09DBP 20053158211.3 ppb
2019-05-09DBP 2005315845.60 ppb
2019-05-09DBP 2005315865.20 ppb
2019-05-09DBP 2005315875.10 ppb
2019-05-13DBP 2005318377.90 ppb
2019-08-01DBP 20054272210.4 ppb
2019-08-01DBP 20054272313.1 ppb
2019-08-01DBP 20054272411.0 ppb
2019-08-01DBP 20054272514.8 ppb
2019-08-01DBP 20054272611.5 ppb
2019-08-01DBP 2005427279.10 ppb
2019-08-01DBP 2005427288.60 ppb
2019-08-13DBP 20054475811.8 ppb
2019-11-07DBP 20055582815.4 ppb
2019-11-07DBP 20055583015.4 ppb
2019-11-07DBP 20055583115.6 ppb
2019-11-07DBP 20055583215.5 ppb
2019-11-07DBP 20055583312.3 ppb
2019-11-07DBP 20055583410.5 ppb
2019-11-07DBP 2005558358.90 ppb
2019-11-18DBP 20055700411.3 ppb
2020-01-02VOC1 2005615044.20 ppb
2020-01-06DBP 2005616656.90 ppb
2020-02-06DBP 20056535712.6 ppb
2020-02-06DBP 20056535811.7 ppb
2020-02-06DBP 20056535910.7 ppb
2020-02-06DBP 2005653609.60 ppb
2020-02-06DBP 2005653616.90 ppb
2020-02-06DBP 2005653625.50 ppb
2020-02-07DBP 20056564012.9 ppb
2020-02-07DBP 2005656417.20 ppb
2020-05-07DBP 20057517112.9 ppb
2020-05-07DBP 20057517314.6 ppb
2020-05-07DBP 2005751757.70 ppb
2020-05-07DBP 2005751766.60 ppb
2020-05-07DBP 2005751779.60 ppb
2020-05-08DBP 2005751749.90 ppb
2020-05-08DBP 20057517210.5 ppb
2020-05-08DBP 20057517014.4 ppb
2020-06-29VOC1 200580772ND
2020-08-06DBP 2005857449.40 ppb
2020-08-06DBP 20058575011.7 ppb
2020-08-06DBP 20058575311.6 ppb
2020-08-06DBP 20058575411.8 ppb
2020-08-07DBP 20058575512.1 ppb
2020-08-07DBP 2005857567.80 ppb
2020-08-07DBP 2005857577.90 ppb
2020-08-07DBP 20058575811.3 ppb
2020-08-11VOC1 200586573ND
2020-09-21VOC1 200591014ND
2020-10-07VOC1 200593218ND
2020-11-05DBP 2005973566.60 ppb
2020-11-05DBP 20059735713.0 ppb
2020-11-05DBP 2005973589.40 ppb
2020-11-05DBP 2005973594.60 ppb
2020-11-05DBP 2005973604.20 ppb
2020-11-05DBP 2005973616.40 ppb
2020-11-12DBP 2005982069.30 ppb
2020-11-12DBP 2005982109.00 ppb
2021-02-11DBP 2006068954.00 ppb
2021-02-11DBP 2006068965.10 ppb
2021-02-11DBP 2006069073.00 ppb
2021-02-12DBP 2006069115.70 ppb
2021-02-16DBP 2006069128.60 ppb
2021-02-17DBP 2006071126.60 ppb
2021-02-22DBP 2006074593.60 ppb
2021-02-23DBP 2006076457.10 ppb
2021-03-05VOC1 2006087073.30 ppb
2021-05-13DBP 2006172398.20 ppb
2021-05-14DBP 2006172369.50 ppb
2021-05-14DBP 2006172376.50 ppb
2021-05-14DBP 2006172385.30 ppb
2021-05-20DBP 20061831612.9 ppb
2021-05-20DBP 2006183177.30 ppb
2021-05-20DBP 20061831911.1 ppb
2021-05-20DBP 20061832111.5 ppb
2021-08-12DBP 20062875610.6 ppb
2021-08-12DBP 2006287576.90 ppb
2021-08-12DBP 20062875811.4 ppb
2021-08-12DBP 2006287597.50 ppb
2021-08-12DBP 2006287608.70 ppb
2021-08-12DBP 20062876110.6 ppb
2021-08-25DBP 20062981513.7 ppb
2021-08-25DBP 20062981613.6 ppb
2021-09-14300059932 3000599340.500 ppb
2021-11-04D300098348 30009835711.1 ppb
2021-11-04D300098349 3000983597.90 ppb
2021-11-04D300098350 30009836114.5 ppb
2021-11-04D300098351 3000983636.90 ppb
2021-11-04D300098352 3000983659.50 ppb
2021-11-05D300098353 30009836712.6 ppb
2021-11-05D300098354 30009836916.3 ppb
2021-11-05D300098355 30009837113.7 ppb
2022-01-24CK22294ND
2022-01-25CK231750.630 ppb
2022-01-25CK23176ND
2022-02-01CK274284.50 ppb
2022-02-03CK297529.00 ppb
2022-02-03CK297536.60 ppb
2022-02-03CK2975415.0 ppb
2022-02-03CK297557.40 ppb
2022-02-03CK297569.90 ppb
2022-02-03CK2975710.00 ppb
2022-02-03CK2975813.0 ppb
2022-02-04CK3148914.0 ppb
2022-02-16CK69359ND
2022-05-12CL315138.70 ppb
2022-05-12CL3151412.0 ppb
2022-05-12CL315157.10 ppb
2022-05-12CL315169.60 ppb
2022-05-12CL315177.20 ppb
2022-05-13CL3151811.0 ppb
2022-05-13CL3151910.00 ppb
2022-05-13CL3152011.0 ppb
2022-08-04CL9896315.0 ppb
2022-08-04CL9896413.0 ppb
2022-08-04CL9896514.0 ppb
2022-08-05CL9896615.0 ppb
2022-08-05CL9896713.0 ppb
2022-08-05CL9896814.0 ppb
2022-08-05CL9896915.0 ppb
2022-08-05CL9897012.0 ppb
2022-08-26CM16199ND
2022-09-08CM256720.600 ppb
2022-09-20CM37295ND
2022-11-17CM9028311.0 ppb
2022-11-17CM902846.50 ppb
2022-11-17CM9028513.0 ppb
2022-11-17CM902867.60 ppb
2022-11-17CM9028711.0 ppb
2022-11-17CM902889.70 ppb
2022-11-17CM902899.00 ppb
2022-11-18CM9029011.0 ppb
2023-01-17CN242384.20 ppb
2023-02-02CN370775.40 ppb
2023-02-02CN370787.30 ppb
2023-02-02CN370799.90 ppb
2023-02-02CN370805.50 ppb
2023-02-02CN370817.80 ppb
2023-02-02CN370827.80 ppb
2023-02-02CN370839.80 ppb
2023-02-02CN370849.40 ppb
2023-05-12CO062946.70 ppb
2023-05-12CO0629513.0 ppb
2023-05-12CO062967.30 ppb
2023-05-12CO0629710.00 ppb
2023-05-12CO0629811.0 ppb
2023-05-12CO0629912.0 ppb
2023-05-18CO0938612.0 ppb
2023-05-18CO0938712.0 ppb
2023-08-10CO733769.40 ppb
2023-08-10CO7337714.0 ppb
2023-08-10CO7337814.0 ppb
2023-08-11CO733799.20 ppb
2023-08-11CO7338011.0 ppb
2023-08-11CO7338113.0 ppb
2023-08-11CO7338213.0 ppb
2023-08-11CO7338317.0 ppb
2023-11-16CP5044911.0 ppb
2023-11-16CP504508.70 ppb
2023-11-16CP5045112.0 ppb
2023-11-16CP504527.40 ppb
2023-11-16CP504537.10 ppb
2023-11-16CP5045412.0 ppb
2023-11-16CP504556.10 ppb
2023-11-17CP504569.20 ppb
2023-12-13CP67269ND