Know Your Environment. Protect Your Health.

Dibromochloromethane

North Wales Water Authority

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.

 

225

Samples

0

Samples exceeding legal limit (MCL)

221

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.29 ppb35351.26 ppb - 9.05 ppb
20193.10 ppb36360.702 ppb - 6.80 ppb
20202.72 ppb38380.910 ppb - 9.00 ppb
20212.21 ppb3634ND - 5.90 ppb
20222.35 ppb40400.548 ppb - 6.22 ppb
20232.13 ppb4038ND - 8.40 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
2018-02-12201805972.89 ppb
2018-02-12201805982.69 ppb
2018-02-12201805992.00 ppb
2018-02-12201806001.44 ppb
2018-02-12201806012.60 ppb
2018-02-12201806022.86 ppb
2018-02-12201806032.07 ppb
2018-02-12201806041.31 ppb
2018-03-13201809561.26 ppb
2018-05-14201818903.54 ppb
2018-05-14201818913.39 ppb
2018-05-14201818922.62 ppb
2018-05-14201818932.28 ppb
2018-05-14201818943.07 ppb
2018-05-14201818953.74 ppb
2018-05-14201818962.82 ppb
2018-05-14201818971.97 ppb
2018-06-05201821481.28 ppb
2018-08-13201830975.66 ppb
2018-08-13201830986.23 ppb
2018-08-13201830993.78 ppb
2018-08-13201831003.09 ppb
2018-08-13201831015.36 ppb
2018-08-13201831029.05 ppb
2018-08-13201831036.81 ppb
2018-08-13201831042.41 ppb
2018-09-04201833731.75 ppb
2018-11-128113026-013.90 ppb
2018-11-128113026-023.20 ppb
2018-11-128113026-033.00 ppb
2018-11-128113026-042.50 ppb
2018-11-128113026-053.30 ppb
2018-11-128113026-065.10 ppb
2018-11-128113026-074.30 ppb
2018-11-128113026-081.90 ppb
2019-02-11201905521.97 ppb
2019-02-11201905532.10 ppb
2019-02-11201905541.87 ppb
2019-02-11201905551.58 ppb
2019-02-11201905561.78 ppb
2019-02-11201905572.66 ppb
2019-02-11201905582.28 ppb
2019-02-11201905591.23 ppb
2019-03-05201908570.913 ppb
2019-05-13201917963.47 ppb
2019-05-13201917973.55 ppb
2019-05-13201917983.02 ppb
2019-05-13201917992.44 ppb
2019-05-13201918002.82 ppb
2019-05-13201918014.17 ppb
2019-05-13201918023.61 ppb
2019-05-13201918031.48 ppb
2019-08-139083732-014.60 ppb
2019-08-139083732-024.60 ppb
2019-08-139083732-034.00 ppb
2019-08-139083732-043.70 ppb
2019-08-139083732-054.40 ppb
2019-08-139083732-066.80 ppb
2019-08-139083732-07RE5.70 ppb
2019-08-139083732-082.90 ppb
2019-09-03201934431.32 ppb
2019-11-119113440-012.30 ppb
2019-11-11201944183.97 ppb
2019-11-11201944193.75 ppb
2019-11-11201944203.37 ppb
2019-11-11201944223.09 ppb
2019-11-11201944236.03 ppb
2019-11-11201944244.92 ppb
2019-11-11201944251.89 ppb
2019-12-039121679-012.60 ppb
2019-12-03201947480.702 ppb
2020-02-101.90 ppb
2020-02-101.90 ppb
2020-02-101.80 ppb
2020-02-101.40 ppb
2020-02-101.50 ppb
2020-02-102.70 ppb
2020-02-102.30 ppb
2020-02-101.000 ppb
2020-05-113.40 ppb
2020-05-112.90 ppb
2020-05-112.20 ppb
2020-05-112.40 ppb
2020-05-112.80 ppb
2020-05-113.30 ppb
2020-05-112.80 ppb
2020-05-111.50 ppb
2020-06-0222418617.001.01 ppb
2020-06-021.01 ppb
2020-08-104.60 ppb
2020-08-104.60 ppb
2020-08-103.10 ppb
2020-08-102.50 ppb
2020-08-104.60 ppb
2020-08-109.00 ppb
2020-08-105.40 ppb
2020-08-101.60 ppb
2020-09-0123001551.001.14 ppb
2020-09-011.14 ppb
2020-11-113.33 ppb
2020-11-113.25 ppb
2020-11-112.88 ppb
2020-11-112.30 ppb
2020-11-113.19 ppb
2020-11-115.33 ppb
2020-11-113.84 ppb
2020-11-111.82 ppb
2020-12-0123539425.000.910 ppb
2020-12-010.910 ppb
2021-02-101.46 ppb
2021-02-101.94 ppb
2021-02-101.36 ppb
2021-02-101.51 ppb
2021-02-101.37 ppb
2021-02-101.87 ppb
2021-02-101.48 ppb
2021-02-100.863 ppb
2021-03-0224062431.00ND
2021-03-02ND
2021-05-122.46 ppb
2021-05-122.58 ppb
2021-05-122.12 ppb
2021-05-122.43 ppb
2021-05-122.32 ppb
2021-05-122.88 ppb
2021-05-122.63 ppb
2021-05-121.88 ppb
2021-06-0124640244.000.985 ppb
2021-06-010.985 ppb
2021-08-113.80 ppb
2021-08-113.90 ppb
2021-08-112.60 ppb
2021-08-112.40 ppb
2021-08-113.80 ppb
2021-08-115.90 ppb
2021-08-113.80 ppb
2021-08-112.10 ppb
2021-11-102.44 ppb
2021-11-102.56 ppb
2021-11-101.93 ppb
2021-11-101.68 ppb
2021-11-101.93 ppb
2021-11-103.59 ppb
2021-11-102.42 ppb
2021-11-101.48 ppb
2022-02-101.99 ppb
2022-02-102.01 ppb
2022-02-101.72 ppb
2022-02-101.46 ppb
2022-02-102.01 ppb
2022-02-103.38 ppb
2022-02-102.02 ppb
2022-02-101.49 ppb
2022-03-0126289347.000.603 ppb
2022-03-010.603 ppb
2022-05-112.10 ppb
2022-05-112.20 ppb
2022-05-112.00 ppb
2022-05-111.40 ppb
2022-05-111.90 ppb
2022-05-113.60 ppb
2022-05-112.40 ppb
2022-05-111.70 ppb
2022-06-0726844676.001.39 ppb
2022-06-071.39 ppb
2022-08-104.01 ppb
2022-08-104.21 ppb
2022-08-103.18 ppb
2022-08-103.39 ppb
2022-08-103.52 ppb
2022-08-106.22 ppb
2022-08-104.61 ppb
2022-08-103.10 ppb
2022-09-2027443468.001.24 ppb
2022-09-201.24 ppb
2022-11-092.43 ppb
2022-11-092.36 ppb
2022-11-092.62 ppb
2022-11-092.05 ppb
2022-11-092.39 ppb
2022-11-094.13 ppb
2022-11-092.71 ppb
2022-11-091.98 ppb
2022-12-0628000374.000.548 ppb
2022-12-060.548 ppb
2023-02-081.31 ppb
2023-02-081.31 ppb
2023-02-081.14 ppb
2023-02-080.963 ppb
2023-02-081.10 ppb
2023-02-082.94 ppb
2023-02-081.45 ppb
2023-02-080.743 ppb
2023-03-0728523026.00ND
2023-03-07ND
2023-05-101.90 ppb
2023-05-101.90 ppb
2023-05-101.90 ppb
2023-05-101.70 ppb
2023-05-101.70 ppb
2023-05-104.60 ppb
2023-05-102.10 ppb
2023-05-101.90 ppb
2023-06-1929110371.001.18 ppb
2023-06-191.18 ppb
2023-08-092.82 ppb
2023-08-092.82 ppb
2023-08-092.99 ppb
2023-08-092.74 ppb
2023-08-092.69 ppb
2023-08-098.40 ppb
2023-08-094.08 ppb
2023-08-092.36 ppb
2023-09-1229701922.001.42 ppb
2023-09-121.42 ppb
2023-11-092.10 ppb
2023-11-092.30 ppb
2023-11-091.90 ppb
2023-11-091.60 ppb
2023-11-092.10 ppb
2023-11-096.40 ppb
2023-11-093.00 ppb
2023-11-091.70 ppb
2023-11-1730073324.000.713 ppb
2023-11-170.713 ppb