Know Your Environment. Protect Your Health.

Bromodichloromethane

City of Redmond Water 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.

 

166

Samples

0

Samples exceeding legal limit (MCL)

160

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.61 ppb32321.20 ppb - 6.72 ppb
20192.38 ppb3632ND - 7.36 ppb
2020N/A00N/A
20212.07 ppb3332ND - 5.88 ppb
20221.71 ppb3332ND - 4.23 ppb
20232.50 ppb32321.09 ppb - 6.31 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
2018-01-102.12 ppb
2018-01-102.09 ppb
2018-01-104.85 ppb
2018-01-101.93 ppb
2018-01-101.93 ppb
2018-01-101.22 ppb
2018-01-102.04 ppb
2018-01-103.46 ppb
2018-04-041.80 ppb
2018-04-041.54 ppb
2018-04-044.73 ppb
2018-04-041.40 ppb
2018-04-041.53 ppb
2018-04-041.20 ppb
2018-04-041.50 ppb
2018-04-043.38 ppb
2018-07-031.46 ppb
2018-07-031.89 ppb
2018-07-036.72 ppb
2018-07-031.80 ppb
2018-07-031.85 ppb
2018-07-031.21 ppb
2018-07-031.97 ppb
2018-07-034.15 ppb
2018-10-032.26 ppb
2018-10-032.45 ppb
2018-10-036.13 ppb
2018-10-032.31 ppb
2018-10-032.23 ppb
2018-10-031.68 ppb
2018-10-032.67 ppb
2018-10-036.11 ppb
2019-01-092.75 ppb
2019-01-092.40 ppb
2019-01-095.04 ppb
2019-01-091.84 ppb
2019-01-091.72 ppb
2019-01-091.09 ppb
2019-01-091.88 ppb
2019-01-093.62 ppb
2019-04-031.56 ppb
2019-04-031.51 ppb
2019-04-033.73 ppb
2019-04-031.27 ppb
2019-04-031.38 ppb
2019-04-030.930 ppb
2019-04-031.33 ppb
2019-04-032.76 ppb
2019-07-012.35 ppb
2019-07-012.28 ppb
2019-07-015.57 ppb
2019-07-012.00 ppb
2019-07-011.99 ppb
2019-07-011.39 ppb
2019-07-011.97 ppb
2019-07-013.95 ppb
2019-07-09ND
2019-07-09ND
2019-07-09ND
2019-07-09ND
2019-10-023.26 ppb
2019-10-023.11 ppb
2019-10-025.82 ppb
2019-10-022.56 ppb
2019-10-022.50 ppb
2019-10-021.82 ppb
2019-10-022.97 ppb
2019-10-027.36 ppb
2021-01-0640643052.89 ppb
2021-01-0640643040.855 ppb
2021-01-0640643021.57 ppb
2021-01-0640643031.46 ppb
2021-01-0640643014.08 ppb
2021-01-0640643061.61 ppb
2021-01-0640642991.78 ppb
2021-01-0640643001.57 ppb
2021-04-0741016241.53 ppb
2021-04-0741016271.13 ppb
2021-04-0741016253.77 ppb
2021-04-0741016301.12 ppb
2021-04-0741016292.55 ppb
2021-04-0741016231.22 ppb
2021-04-0741016280.801 ppb
2021-04-0741016261.17 ppb
2021-07-0741723831.38 ppb
2021-07-0741723815.03 ppb
2021-07-0741723801.19 ppb
2021-07-0741723853.19 ppb
2021-07-0741723861.52 ppb
2021-07-0741723791.51 ppb
2021-07-0741723840.982 ppb
2021-07-0741723821.52 ppb
2021-09-024178935ND
2021-10-0641957072.84 ppb
2021-10-0641957142.26 ppb
2021-10-0641957121.90 ppb
2021-10-0641957133.31 ppb
2021-10-0641957112.24 ppb
2021-10-0641957082.01 ppb
2021-10-0641957102.43 ppb
2021-10-0641957095.88 ppb
2022-01-1242300761.75 ppb
2022-01-1242300792.87 ppb
2022-01-1242300771.41 ppb
2022-01-1242300801.36 ppb
2022-01-1242300752.32 ppb
2022-01-1242300731.61 ppb
2022-01-1242300780.734 ppb
2022-01-1242300741.29 ppb
2022-04-0642705291.30 ppb
2022-04-0642705331.12 ppb
2022-04-0642705281.04 ppb
2022-04-0642705271.20 ppb
2022-04-0642705310.876 ppb
2022-04-0642705261.34 ppb
2022-04-0642705321.84 ppb
2022-04-0642705301.24 ppb
2022-07-0643102711.80 ppb
2022-07-0643102732.80 ppb
2022-07-0643102720.973 ppb
2022-07-0643102741.60 ppb
2022-07-0643102701.69 ppb
2022-07-0643102693.79 ppb
2022-07-0643102681.38 ppb
2022-07-0643102671.67 ppb
2022-07-274325450ND
2022-10-0543619594.23 ppb
2022-10-0543619601.65 ppb
2022-10-0543619571.64 ppb
2022-10-0543619552.82 ppb
2022-10-0543619581.18 ppb
2022-10-0543619541.79 ppb
2022-10-0543619561.98 ppb
2022-10-0543619531.99 ppb
2023-01-0343977011.66 ppb
2023-01-0343977032.25 ppb
2023-01-0343977051.09 ppb
2023-01-0343977041.94 ppb
2023-01-0343977002.09 ppb
2023-01-0343977071.64 ppb
2023-01-0343977063.69 ppb
2023-01-0343977021.93 ppb
2023-04-0744420641.43 ppb
2023-04-0744420631.45 ppb
2023-04-0744420651.14 ppb
2023-04-0744420623.31 ppb
2023-04-0744420611.83 ppb
2023-04-0744420662.72 ppb
2023-04-0744420671.30 ppb
2023-04-0744420601.43 ppb
2023-07-0744828001.94 ppb
2023-07-0744827981.68 ppb
2023-07-0744828021.32 ppb
2023-07-0744828041.88 ppb
2023-07-0744828033.06 ppb
2023-07-0744827971.87 ppb
2023-07-0744827995.68 ppb
2023-07-0744828012.02 ppb
2023-10-0245293746.22 ppb
2023-10-0245293722.70 ppb
2023-10-0245293706.31 ppb
2023-10-0245293693.21 ppb
2023-10-0245293752.86 ppb
2023-10-0245293712.65 ppb
2023-10-0245293732.38 ppb
2023-10-0245293683.34 ppb